Merge branch 'pcremades-master'

Included pcbs.scad in displays.scad.
Moved I2C_LCD_Backpack from tiny_pcbs to pcbs to prevent connector clash. Updated images and readme.
2025-09-03 20:32:35 +02:00 · 2025-04-15 11:32:22 +01:00 · 2025-04-15 11:31:46 +01:00 · 2025-04-11 11:54:48 -03:00 · 2025-04-11 11:39:59 -03:00 · 2025-04-11 11:27:14 -03:00
430 changed files with 188556 additions and 47155 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@ options.json
 times.txt
 *_diff.png
 *.echo
+cmd_times.txt
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,853 @@
 This changelog is generated by `changelog.py` using manually added semantic version tags to classify commits as breaking changes, additions or fixes.


+### [v21.36.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.36.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.35.6...v21.36.0 "diff with v21.35.6")
+*   2025-04-09 [`33ac382`](https://github.com/nophead/NopSCADlib/commit/33ac3820b0df87df05d7c2dbb3d553e2aafa6828 "show commit") [C.P.](# "Chris Palmer") Added `pose_stl()` module because `pose()` only works for assembly views.
+
+#### [v21.35.6](https://github.com/nophead/NopSCADlib/releases/tag/v21.35.6 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.35.5...v21.35.6 "diff with v21.35.5")
+*   2025-03-30 [`5d0eda8`](https://github.com/nophead/NopSCADlib/commit/5d0eda87e44a70fdbed51407a43555a637e064f9 "show commit") [D.T.](# "Daniel Trnka") `barrel_jack:` added cutout
+
+#### [v21.35.5](https://github.com/nophead/NopSCADlib/releases/tag/v21.35.5 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.35.4...v21.35.5 "diff with v21.35.4")
+*   2025-04-01 [`3715585`](https://github.com/nophead/NopSCADlib/commit/3715585002ba56681103103faddd043b1553d095 "show commit") [C.P.](# "Chris Palmer") Made `pose()` work on STL renders to match the documentation.
+
+#### [v21.35.4](https://github.com/nophead/NopSCADlib/releases/tag/v21.35.4 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.35.3...v21.35.4 "diff with v21.35.3")
+*   2025-03-23 [`fdbe0c7`](https://github.com/nophead/NopSCADlib/commit/fdbe0c7a9eba96823683b8e1161bc160bd63231e "show commit") [J.R.](# "Jeroen Roos") Change variable names that start with a digit
+
+ * Change names of variables from `2a` and `2c` to `ax2` (a times 2) and
+`cx2`, because variable names starting with a digit are deprecated in
+OpenSCAD.
+
+#### [v21.35.3](https://github.com/nophead/NopSCADlib/releases/tag/v21.35.3 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.35.2...v21.35.3 "diff with v21.35.2")
+*   2025-03-27 [`9f9aa67`](https://github.com/nophead/NopSCADlib/commit/9f9aa6723eff9b7439e17758406e9f8e409828ee "show commit") [C.P.](# "Chris Palmer") Third attempt to fix dimension image.
+
+#### [v21.35.2](https://github.com/nophead/NopSCADlib/releases/tag/v21.35.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.35.1...v21.35.2 "diff with v21.35.1")
+*   2025-03-27 [`6b6704b`](https://github.com/nophead/NopSCADlib/commit/6b6704b823291119697bf4993eddb3f2e6873875 "show commit") [C.P.](# "Chris Palmer") Second attempt to fix dimension image.
+
+#### [v21.35.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.35.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.35.0...v21.35.1 "diff with v21.35.0")
+*   2025-03-27 [`117fb62`](https://github.com/nophead/NopSCADlib/commit/117fb626e7023ca92339947a0f84a8aee5c6429e "show commit") [C.P.](# "Chris Palmer") Fixed dimension example image address.
+
+### [v21.35.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.35.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.34.0...v21.35.0 "diff with v21.34.0")
+*   2025-03-27 [`6dc8204`](https://github.com/nophead/NopSCADlib/commit/6dc82045fffeca383381724abb6d70d7025b2ae5 "show commit") [C.P.](# "Chris Palmer") Shortened the module comments by factoring out the parameter descriptions.
+Added the nut example picture.
+Fixed nut picture placement.
+Updated images and readme.
+
+*   2025-03-22 [`c50f95a`](https://github.com/nophead/NopSCADlib/commit/c50f95a203ead9070407fbae7d1247a00938b255 "show commit") [A.V.](# "Alex Verschoot") added some documentation to the nut
+
+*   2025-03-22 [`49bd6e0`](https://github.com/nophead/NopSCADlib/commit/49bd6e0a04885cf5cad7655aee038e16dc0a7e15 "show commit") [A.V.](# "Alex Verschoot") added negative offsets to test
+
+*   2025-03-22 [`921843c`](https://github.com/nophead/NopSCADlib/commit/921843cc09e7ae2953090c30e7d5b9c644e3b966 "show commit") [A.V.](# "Alex Verschoot") made negative offset work as expected (go to the opposite side, and use min instead of max on coordinates)
+
+*   2025-03-19 [`c17cc13`](https://github.com/nophead/NopSCADlib/commit/c17cc1321bcd06af439519435734f6e0eb8f5d43 "show commit") [A.V.](# "Alex Verschoot") Changed the module comments style
+
+*   2025-03-16 [`9862b3c`](https://github.com/nophead/NopSCADlib/commit/9862b3c3a347fac5bb355b1d62a02bdc0970221b "show commit") [A.V.](# "Alex Verschoot") typos
+
+*   2025-03-16 [`e87e19a`](https://github.com/nophead/NopSCADlib/commit/e87e19aa182acee64e3d47c282c81b7ef495bf81 "show commit") [A.V.](# "Alex Verschoot") removed `center` from experiment
+
+*   2025-03-16 [`4f68935`](https://github.com/nophead/NopSCADlib/commit/4f68935b5b56b7405eb6c1e0fae5845e8f800489 "show commit") [A.V.](# "Alex Verschoot") some cleanup
+
+*   2025-03-15 [`8992cce`](https://github.com/nophead/NopSCADlib/commit/8992cce7a62d2fec956aae64236ba19dc340603f "show commit") [A.V.](# "Alex Verschoot") added argument for text size, and improve auto size
+
+*   2025-03-15 [`106666e`](https://github.com/nophead/NopSCADlib/commit/106666ec493f6b088ee398b276e8734d0790a451 "show commit") [A.V.](# "Alex Verschoot") simplified the math to use rotates instead, added examples, and allowed the user to choose witch plane the x,y and z dimensions are in
+
+*   2025-03-13 [`f731f0f`](https://github.com/nophead/NopSCADlib/commit/f731f0fe98a3a3d975c34cd85ac4f618c2f1bf6b "show commit") [A.V.](# "Alex Verschoot") added a function to rotate around the dim axis
+
+*   2025-03-13 [`3a62198`](https://github.com/nophead/NopSCADlib/commit/3a62198183b6a1dce74479ae44e00b4d5e690431 "show commit") [A.V.](# "Alex Verschoot") replaced the new math functions with rotate and transform
+
+*   2025-03-07 [`0123885`](https://github.com/nophead/NopSCADlib/commit/012388571185c674293ba17de39e0db59a775ff4 "show commit") [A.V.](# "Alex Verschoot") Improved text alligment
+
+*   2025-03-02 [`b166ec4`](https://github.com/nophead/NopSCADlib/commit/b166ec47dd7e34e6798c1287d0ce8612a84e9be1 "show commit") [A.V.](# "Alex Verschoot") Remove old commented code from `dimension.scad`
+
+*   2025-03-02 [`6467de5`](https://github.com/nophead/NopSCADlib/commit/6467de5facdc2a5b6ccdbdbe32f703ba3faa70f4 "show commit") [A.V.](# "Alex Verschoot") Update `maths.scad`
+
+*   2025-03-02 [`dc683ed`](https://github.com/nophead/NopSCADlib/commit/dc683ed701b016a1c79800db2ed41aed9cf8cac6 "show commit") [A.V.](# "Alex Verschoot") added dimensions
+
+### [v21.34.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.34.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.33.0...v21.34.0 "diff with v21.33.0")
+*   2025-02-22 [`8623572`](https://github.com/nophead/NopSCADlib/commit/862357279a98c9511e2db166585065c660eb331d "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2025-02-16 [`0b8ad93`](https://github.com/nophead/NopSCADlib/commit/0b8ad93dc5c1ed89c6525e846c02f756bfbe9b2b "show commit") [A.V.](# "Alex Verschoot") made the test cases work with the motor in the back
+
+*   2025-02-16 [`3889040`](https://github.com/nophead/NopSCADlib/commit/38890400ac03c64635674412e621236ab28f0314 "show commit") [A.V.](# "Alex Verschoot") added new test cases for motor in the back
+
+*   2025-02-15 [`9974c03`](https://github.com/nophead/NopSCADlib/commit/9974c03fc9c1ca0f67ce27fa5ea5f69c94d416ba "show commit") [A.V.](# "Alex Verschoot") improved the comments
+
+*   2025-02-15 [`0208965`](https://github.com/nophead/NopSCADlib/commit/0208965684441bb2022fe2b513aa8ee28ce22f41 "show commit") [A.V.](# "Alex Verschoot") added an option to emplace the motor in the back
+
+### [v21.33.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.33.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.32.1...v21.33.0 "diff with v21.32.1")
+*   2025-01-22 [`8458e43`](https://github.com/nophead/NopSCADlib/commit/8458e432fcb472c0b2f7c880f9c06ea7d4f7511f "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2025-01-01 [`e11bb72`](https://github.com/nophead/NopSCADlib/commit/e11bb72814010692e22f0cbe891c77fac0bcebfe "show commit") [L.](# "loekwous") Added Black pill pcb
+
+*   2025-01-21 [`0154b2a`](https://github.com/nophead/NopSCADlib/commit/0154b2a32ce6cd9fd0a5e8cd69e1b26f0358f816 "show commit") [C.P.](# "Chris Palmer") Added Sparkfun `9DOF_stick` PCB.
+
+#### [v21.32.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.32.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.32.0...v21.32.1 "diff with v21.32.0")
+*   2025-01-21 [`0b80218`](https://github.com/nophead/NopSCADlib/commit/0b802187bb56726e84128df9ccb46c9a830e7dbc "show commit") [C.P.](# "Chris Palmer") Corrected the chip number on `ZC_A0591` pcb.
+
+*   2025-01-21 [`923c3b5`](https://github.com/nophead/NopSCADlib/commit/923c3b5c573cde6f9bc4611e6bf0e5cc2922443e "show commit") [C.P.](# "Chris Palmer") Avoid making empty folders for dxfs, stls or png if there are no parts of that type.
+
+### [v21.32.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.32.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.31.0...v21.32.0 "diff with v21.31.0")
+*   2024-10-20 [`4d89117`](https://github.com/nophead/NopSCADlib/commit/4d8911718c54fdee5054d934c4aeeee34386d7f9 "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2024-10-17 [`cb57b25`](https://github.com/nophead/NopSCADlib/commit/cb57b25b0bbe23b5f5a7f5c910dbdd3cf53530dd "show commit") [F.R.](# "Fran<61>ois Revol") Add 10x15 micro rocker switches
+
+ * Spades are not exact but close enough.
+
+### [v21.31.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.31.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.30.0...v21.31.0 "diff with v21.30.0")
+*   2024-10-17 [`066242a`](https://github.com/nophead/NopSCADlib/commit/066242af588446037fc69606388ccc65d9884ad6 "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2024-10-17 [`4b3468f`](https://github.com/nophead/NopSCADlib/commit/4b3468f78d998fbd2e849d10bdc63dd3aeadc72a "show commit") [C.P.](# "Chris Palmer") Fixed LED bezels to cope with square LEDs.
+
+*   2024-10-17 [`001ea2a`](https://github.com/nophead/NopSCADlib/commit/001ea2a174dbc4395636fb325628a53874e59943 "show commit") [C.P.](# "Chris Palmer") Fixed LED bezel test.
+
+*   2024-10-17 [`8e9d2dd`](https://github.com/nophead/NopSCADlib/commit/8e9d2dd367015403aa542b16fa384d08856e8401 "show commit") [C.P.](# "Chris Palmer") Fixed LED test.
+
+*   2024-10-17 [`f4a7065`](https://github.com/nophead/NopSCADlib/commit/f4a7065e1f1198add4e50754343fd0d97954e239 "show commit") [F.R.](# "Fran<61>ois Revol") Add rectangular LEDs
+
+ * As per `https://www.futurlec.com/LED/Red_2x5mm_LED.shtml`
+
+### [v21.30.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.30.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.29.2...v21.30.0 "diff with v21.29.2")
+*   2024-10-10 [`7ffff8b`](https://github.com/nophead/NopSCADlib/commit/7ffff8b7b7e111400dd7e3cb8e96bc95471a8ffa "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2024-10-10 [`e001cc4`](https://github.com/nophead/NopSCADlib/commit/e001cc46a34206801c7e1a474634b9b1f83dfc9a "show commit") [C.P.](# "Chris Palmer") Restored Lumintop colour to white and made text black on white batteries.
+
+*   2024-10-08 [`7b42157`](https://github.com/nophead/NopSCADlib/commit/7b421570b46136de925963321ef44cb570e868b6 "show commit") [J.G.](# "Jan Giebels") corrected c&p error
+
+*   2024-10-08 [`49ba60f`](https://github.com/nophead/NopSCADlib/commit/49ba60f159b2c3685696fff3f1dca5a9184d2553 "show commit") [J.G.](# "Jan Giebels") added L4680, L32700, L16340 `Li-Ion/LiFePo4` batteries
+
+#### [v21.29.2](https://github.com/nophead/NopSCADlib/releases/tag/v21.29.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.29.1...v21.29.2 "diff with v21.29.1")
+*   2024-10-07 [`9e45dba`](https://github.com/nophead/NopSCADlib/commit/9e45dbad04bb4752b9b3aceaa88ee71bb975d749 "show commit") [C.P.](# "Chris Palmer") Fixed incorrect parameters passed to `tube()` in `ht_pipe()`.
+Fixed `lib.scad` to include `ht_pipes.scad` instead of using it.
+
+#### [v21.29.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.29.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.29.0...v21.29.1 "diff with v21.29.0")
+*   2024-10-07 [`f65fe59`](https://github.com/nophead/NopSCADlib/commit/f65fe598318d349a5a8764e2dbbe80acfdc0be2e "show commit") [C.P.](# "Chris Palmer") Restored 30mm tube section on the bottom of the pipe fitting.
+
+### [v21.29.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.29.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.28.2...v21.29.0 "diff with v21.28.2")
+*   2024-10-06 [`932c68a`](https://github.com/nophead/NopSCADlib/commit/932c68a2c01307fd22946b17f9419894f2de2e9f "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+Pipes are now made with tube instead of differencing cylinders.
+`HTpipeFitting()` now uses `rotate_extrude` and corrected internal shape.
+The seal ring is now tube diameter + 13.
+
+*   2024-10-06 [`78e3360`](https://github.com/nophead/NopSCADlib/commit/78e3360900f61f30d5df7d53084a7e752ecd836a "show commit") [J.G.](# "Jan Giebels") changed naming of `ht_pipes` test script
+
+*   2024-10-06 [`178f67f`](https://github.com/nophead/NopSCADlib/commit/178f67f815dca6edc65651c0b9cfb9d670c349ae "show commit") [J.G.](# "Jan Giebels") added more pipes and some cleanup
+
+*   2024-10-06 [`af1b057`](https://github.com/nophead/NopSCADlib/commit/af1b057f597f75532b17f042e7711337731aa0c3 "show commit") [J.G.](# "Jan Giebels") added info and description
+
+*   2024-10-06 [`195917a`](https://github.com/nophead/NopSCADlib/commit/195917a8790926515a6fffb2a02d7154855de568 "show commit") [J.G.](# "Jan Giebels") added HT pipes to lib
+
+*   2024-10-06 [`9ed6aab`](https://github.com/nophead/NopSCADlib/commit/9ed6aab6c8cfd1a647f5eae2eac8d74832328065 "show commit") [J.G.](# "Jan Giebels") added test script and some more HT pipes
+
+*   2024-10-05 [`c61386c`](https://github.com/nophead/NopSCADlib/commit/c61386caf937840e9a07e348b3ad96af71820dd2 "show commit") [J.G.](# "Jan Giebels") added HT waterpipes
+
+*   2024-10-02 [`549dbc9`](https://github.com/nophead/NopSCADlib/commit/549dbc9380f39f8521554963f2051c3f05f5495f "show commit") [G.L.](# "Greg Land") Relative paths for vitamin `rod_end` includes
+
+#### [v21.28.2](https://github.com/nophead/NopSCADlib/releases/tag/v21.28.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.28.1...v21.28.2 "diff with v21.28.1")
+*   2024-10-02 [`afc50ff`](https://github.com/nophead/NopSCADlib/commit/afc50ffe5d01ee586b55630e0d34e44720f6b68a "show commit") [C.P.](# "Chris Palmer") Removed trailing comma in `let()` for compatibility with last release.
+
+#### [v21.28.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.28.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.28.0...v21.28.1 "diff with v21.28.0")
+*   2024-09-30 [`8fb7ec0`](https://github.com/nophead/NopSCADlib/commit/8fb7ec02138f30c5f4b2a72c723ea01d753aeb61 "show commit") [C.P.](# "Chris Palmer") Updated images.
+
+*   2024-09-25 [`f6a3717`](https://github.com/nophead/NopSCADlib/commit/f6a371769d2850037dc15c94366d14c126efe4ba "show commit") [J.](# "jijamik") Corrected HGH20CA `carriage_pitch_x` value.
+
+### [v21.28.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.28.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.27.1...v21.28.0 "diff with v21.27.1")
+*   2024-09-30 [`e4b1b68`](https://github.com/nophead/NopSCADlib/commit/e4b1b686ff12a415c6109f311c6c36104d8a7b0c "show commit") [C.P.](# "Chris Palmer") Added `rd_cm_choke(),` `rd_coil()` and `spiral_wrap()`.
+Added 10mm ceramic disc capacitors.
+
+#### [v21.27.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.27.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.27.0...v21.27.1 "diff with v21.27.0")
+*   2024-09-13 [`c484ac2`](https://github.com/nophead/NopSCADlib/commit/c484ac2e8dbc8e9f9cb5051ce963250839a2705d "show commit") [C.P.](# "Chris Palmer") Updated libtest image with new D-connector.
+
+### [v21.27.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.27.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.26.0...v21.27.0 "diff with v21.26.0")
+*   2024-09-13 [`6da8452`](https://github.com/nophead/NopSCADlib/commit/6da845215bd2a4c3b7dc8a022579947cef27b8b8 "show commit") [C.P.](# "Chris Palmer") Updated readme.
+
+*   2024-09-10 [`7fe5aaa`](https://github.com/nophead/NopSCADlib/commit/7fe5aaac22283c453b2c2e5a2239b65ddd4320c1 "show commit") [D.T.](# "Daniel Trnka") Added DCONN37 connector
+
+### [v21.26.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.26.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.25.0...v21.26.0 "diff with v21.25.0")
+*   2024-09-02 [`4f073f9`](https://github.com/nophead/NopSCADlib/commit/4f073f97e815e5c0b469a07d20526f7e2b88d79d "show commit") [C.P.](# "Chris Palmer") Added `rod_ends.scad` to `lib.scad` and `lib_test.scad`.
+Fixed `rod_end` colours.
+Added new pulleys to the test list and reodered.
+Printed pulleys nopw shown in two rows.
+Updated images and readme.
+
+*   2024-08-23 [`fe3ce88`](https://github.com/nophead/NopSCADlib/commit/fe3ce88086de8480a88b69b7f7d2e6376b03caa6 "show commit") [T.](# "texas") adding test code for weld nuts and rod ends, adding ball bearings to test code list, and updating code for dome screw heads to use an angle to determine inset distance of the lower taper
+
+*   2024-08-16 [`37fe83e`](https://github.com/nophead/NopSCADlib/commit/37fe83e2e08b6a0bd23042e37fbe89122d78516c "show commit") [T.](# "texas") added chamfer distance variable to taper in the bottom of the dome heads
+
+*   2024-08-14 [`f86dfef`](https://github.com/nophead/NopSCADlib/commit/f86dfef919731f9731ca39f70ebd07b2c7204dfa "show commit") [T.](# "texas") fixed the calculations for dome screws to now use equations for a scaled sphere cap instead.  This allows for larger and smaller sizes than were previously possible, and also eliminates the need for that lift value.  Adding M6 and M8 dome screws as a result of this new ability
+
+*   2024-08-14 [`e97f9fd`](https://github.com/nophead/NopSCADlib/commit/e97f9fdacc87bbc31cb9f0f3474132bc09f5ed91 "show commit") [=.](# "=") adding weld nuts
+
+*   2024-08-13 [`ba45f85`](https://github.com/nophead/NopSCADlib/commit/ba45f8558007c7efe6bfd17bebacf285293ba4ad "show commit") [A.](# "alex") adding weld nuts, m4 and m6 for now
+
+*   2024-03-18 [`90fb9eb`](https://github.com/nophead/NopSCADlib/commit/90fb9eb01f8721cb48589e59a14b3770da250cd5 "show commit") [A.](# "alex") adding F625 ball bearing
+
+*   2024-03-13 [`905fc01`](https://github.com/nophead/NopSCADlib/commit/905fc016778d6a78774c05236425463fa2aa3323 "show commit") [A.](# "alex") adding rod end bearing and a yellow bed spring
+
+*   2024-03-04 [`a695974`](https://github.com/nophead/NopSCADlib/commit/a695974ac562b88ed08cc3ea54a2a4e07f638c5f "show commit") [T.](# "Tex") updating after maybe breaking debian
+
+### [v21.25.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.25.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.24.1...v21.25.0 "diff with v21.24.1")
+*   2024-08-15 [`bc7f294`](https://github.com/nophead/NopSCADlib/commit/bc7f294f995d8aa8ba500a1ef666c8fb50f94fd3 "show commit") [C.P.](# "Chris Palmer") Added `smd_250V_fuse()` and `rd_box_cap()`.
+Fixed missing value parameters from a lot of the SMD component instantiation examples.
+
+#### [v21.24.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.24.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.24.0...v21.24.1 "diff with v21.24.0")
+*   2024-06-30 [`07866f7`](https://github.com/nophead/NopSCADlib/commit/07866f72845c9e08c90e371c92315bab54f003c6 "show commit") [H.](# "Hermann-SW") Add `PT_camera` to examples and gallery
+
+### [v21.24.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.24.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.23.2...v21.24.0 "diff with v21.23.2")
+*   2024-06-30 [`53d1ea9`](https://github.com/nophead/NopSCADlib/commit/53d1ea93cd339d3fb6e085be9314d7ec0b547796 "show commit") [C.P.](# "Chris Palmer") Can now specify a rotation angle for a `geared_stepper's` shaft.
+
+#### [v21.23.2](https://github.com/nophead/NopSCADlib/releases/tag/v21.23.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.23.1...v21.23.2 "diff with v21.23.1")
+*   2024-06-12 [`b00709d`](https://github.com/nophead/NopSCADlib/commit/b00709da820e1241422b6e156b0c61157c18d63d "show commit") [C.P.](# "Chris Palmer") Image edge pixel changes due to new PC.
+
+*   2024-06-12 [`c76be23`](https://github.com/nophead/NopSCADlib/commit/c76be2386715b80bbbc9a71c99214df7f3c71bc7 "show commit") [C.P.](# "Chris Palmer") Fixed thread bug on threaded inserts revealed by latest OpenSCAD snapshot.
+
+*   2024-06-12 [`f6f348b`](https://github.com/nophead/NopSCADlib/commit/f6f348b76e7986927a571e1c07c3f866bcbeeafe "show commit") [C.P.](# "Chris Palmer") Fixed rocker slot height.
+
+#### [v21.23.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.23.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.23.0...v21.23.1 "diff with v21.23.0")
+*   2024-05-08 [`870b396`](https://github.com/nophead/NopSCADlib/commit/870b396574935603305462f1fea88564c909aad8 "show commit") [C.](# "Chris") Revoved strailing comma in `let()` in `splines.scad`.
+
+### [v21.23.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.23.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.22.0...v21.23.0 "diff with v21.22.0")
+*   2024-04-21 [`c1fdb2e`](https://github.com/nophead/NopSCADlib/commit/c1fdb2e701672b2404e34f224e77f21fb2ff34da "show commit") [C.P.](# "Chris Palmer") Dpdated images and readme.
+
+*   2024-04-20 [`cbe2c08`](https://github.com/nophead/NopSCADlib/commit/cbe2c085b72d0e5d9f0c6485d5fa7df0e172a4cc "show commit") [V.](# "V.Shcriabets") Add  RCWL-0516 PCB
+
+### [v21.22.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.22.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.21.0...v21.22.0 "diff with v21.21.0")
+*   2024-04-21 [`dbf930f`](https://github.com/nophead/NopSCADlib/commit/dbf930fd366c28aa9e581d9fe01e3654b882923a "show commit") [C.P.](# "Chris Palmer") Added cubic splines and Catmull Rom splines.
+
+### [v21.21.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.21.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.20.0...v21.21.0 "diff with v21.20.0")
+*   2024-04-21 [`97cea65`](https://github.com/nophead/NopSCADlib/commit/97cea65f41714acd31a3a3b968d8c133ce1a91d2 "show commit") [C.P.](# "Chris Palmer") Cable clips can now use inserts or nut traps.
+
+### [v21.20.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.20.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.19.2...v21.20.0 "diff with v21.19.2")
+*   2024-04-21 [`c7e912c`](https://github.com/nophead/NopSCADlib/commit/c7e912cd77e189ef729f94956245f1c6a9f72012 "show commit") [C.P.](# "Chris Palmer") A optional path can now be specified for tubing.
+
+#### [v21.19.2](https://github.com/nophead/NopSCADlib/releases/tag/v21.19.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.19.1...v21.19.2 "diff with v21.19.1")
+*   2024-04-21 [`f563645`](https://github.com/nophead/NopSCADlib/commit/f563645e45817a4f89ef3cb1be9d932310c485c6 "show commit") [C.P.](# "Chris Palmer") Corrected M2 `nut_trap_depth,` was too big.
+
+#### [v21.19.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.19.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.19.0...v21.19.1 "diff with v21.19.0")
+*   2024-04-21 [`2840cc2`](https://github.com/nophead/NopSCADlib/commit/2840cc2390a8e776add8ca3ef715abfc8d15dadc "show commit") [C.P.](# "Chris Palmer") Washer now uses `sweep.scad` instead of including it, leaking its interface.
+
+### [v21.19.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.19.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.18.0...v21.19.0 "diff with v21.18.0")
+*   2024-04-21 [`a5b2018`](https://github.com/nophead/NopSCADlib/commit/a5b20180083ba8d3014bc298cf0e28c20e6be437 "show commit") [C.P.](# "Chris Palmer") Added `offset_paths()` to `sweep.scad`.
+`show_path()` now takes an optional radius.
+
+### [v21.18.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.18.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.17.0...v21.18.0 "diff with v21.17.0")
+*   2024-03-14 [`19dadcb`](https://github.com/nophead/NopSCADlib/commit/19dadcb58db0dd7408726c69d46cf2b7b26c764b "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2024-03-14 [`c565f29`](https://github.com/nophead/NopSCADlib/commit/c565f2912e7319575fc6ec3262699b73305c46b4 "show commit") [V.](# "V.Shkriabets") Update MT3608 pcb module
+
+### [v21.17.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.17.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.16.1...v21.17.0 "diff with v21.16.1")
+*   2024-03-14 [`5579c0d`](https://github.com/nophead/NopSCADlib/commit/5579c0d988c6d7983d3884afa7e42fdb283109a8 "show commit") [C.P.](# "Chris Palmer") Fixed `box_shelf_bracket()` horizontal holes.
+Added a third child to `box_shelf_bracket()` to allow custom additions.
+
+*   2024-03-14 [`67408f8`](https://github.com/nophead/NopSCADlib/commit/67408f8422918416c617ec7389dbc09b2c62a2ae "show commit") [C.P.](# "Chris Palmer") Added `d_hole()` module.
+
+*   2024-03-14 [`929abbe`](https://github.com/nophead/NopSCADlib/commit/929abbefda2c380b121c775371f197860c6c3aff "show commit") [C.P.](# "Chris Palmer") Updated front page image.
+
+*   2024-03-14 [`c7727e7`](https://github.com/nophead/NopSCADlib/commit/c7727e7106e3829a6b5f6c501b1a082d540a4a68 "show commit") [C.P.](# "Chris Palmer") Added Sellotape to sheets.
+
+*   2024-03-14 [`1dbba5a`](https://github.com/nophead/NopSCADlib/commit/1dbba5a650f8dac2d05a5668008e61a5ec22ea4f "show commit") [C.P.](# "Chris Palmer") Added `camera_lens_height()` function.
+
+#### [v21.16.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.16.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.16.0...v21.16.1 "diff with v21.16.0")
+*   2024-03-14 [`db2a9a8`](https://github.com/nophead/NopSCADlib/commit/db2a9a8a24966f098d4c0c8157de98a885b79a85 "show commit") [C.P.](# "Chris Palmer") Ziptie test can now show wires with t `=` 0.
+
+*   2024-03-14 [`6ced9c8`](https://github.com/nophead/NopSCADlib/commit/6ced9c871c5a637dbe8494836a4233e1f6cd4971 "show commit") [C.P.](# "Chris Palmer") Fixed FOV for ESP32 camera being rotated.
+Shortened the ESP32 camera header pins.
+
+*   2024-03-14 [`d6b00fb`](https://github.com/nophead/NopSCADlib/commit/d6b00fbf5719239adc5e8b66f863c003a50806d3 "show commit") [C.P.](# "Chris Palmer") Removed unused test code.
+
+*   2024-03-14 [`2c996bb`](https://github.com/nophead/NopSCADlib/commit/2c996bb7a143a85c21833a69f56f2f47afabe072 "show commit") [C.P.](# "Chris Palmer") Fixed random error caused by not running bom first.
+
+### [v21.16.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.16.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.15.0...v21.16.0 "diff with v21.15.0")
+*   2024-02-19 [`fdb92ec`](https://github.com/nophead/NopSCADlib/commit/fdb92ec263d60a42e04f06abfeec5e1648a12b6b "show commit") [C.P.](# "Chris Palmer") Improved layout to fit into front page view.
+
+*   2024-02-18 [`f6404b9`](https://github.com/nophead/NopSCADlib/commit/f6404b939f714b3121dc6e9737cc24f3b9c64ebb "show commit") [J.R.](# "Jeroen Roos") Added T-Tracks and accessories
+
+### [v21.15.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.15.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.14.0...v21.15.0 "diff with v21.14.0")
+*   2024-02-19 [`30c67e7`](https://github.com/nophead/NopSCADlib/commit/30c67e742bb3603fa41b41e1a144989947e58ad7 "show commit") [C.P.](# "Chris Palmer") Updated the front page image.
+
+*   2024-02-12 [`efb1153`](https://github.com/nophead/NopSCADlib/commit/efb1153e2245fa67193cd7b49ac0926239c3b703 "show commit") [J.R.](# "Jeroen Roos") Add threaded inserts
+
+### [v21.14.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.14.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.13.1...v21.14.0 "diff with v21.13.1")
+*   2024-02-18 [`63a4271`](https://github.com/nophead/NopSCADlib/commit/63a4271c4c1bc97e93e67e8178515be1cfda9e43 "show commit") [C.P.](# "Chris Palmer") Updated libtest image.
+
+*   2024-02-18 [`0edf3a2`](https://github.com/nophead/NopSCADlib/commit/0edf3a2f75d729aa663836878d278226e7bd8094 "show commit") [C.P.](# "Chris Palmer") Cable clips can now handle up to 9 wires, have the nut and bolt flipped or use an insert.
+`cable_radius()` now handles cables with up to 20 wires.
+`cable_bundle()` and `cable_bundle_positions()` now handle bundles up to 9 wires.
+Added `cable_merge()`.
+
+#### [v21.13.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.13.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.13.0...v21.13.1 "diff with v21.13.0")
+*   2024-02-10 [`8540e04`](https://github.com/nophead/NopSCADlib/commit/8540e04a10d83be4ff454fa8999614e5137dd0ab "show commit") [C.P.](# "Chris Palmer") Metal hex pillars now chamfered.
+
+### [v21.13.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.13.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.12.0...v21.13.0 "diff with v21.12.0")
+*   2024-02-10 [`7947810`](https://github.com/nophead/NopSCADlib/commit/79478104d6b3a8673ae405606d2576ad98c4e90e "show commit") [C.P.](# "Chris Palmer") Dome option added to nut to draw acorn nuts.
+Chamfers added to nuts and hex head screws when manifold is used.
+
+*   2024-02-10 [`38196e9`](https://github.com/nophead/NopSCADlib/commit/38196e9f78f07d0f9a4eca0355cc6e99f29332fb "show commit") [C.P.](# "Chris Palmer") Mods to allow the manifold experimental option to be used.
+
+*   2024-02-05 [`9666c01`](https://github.com/nophead/NopSCADlib/commit/9666c018a0a99be8d24a2454a4c1448b09f83af0 "show commit") [C.P.](# "Chris Palmer") Made sheet overridable in `box_base_blank()`.
+
+### [v21.12.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.12.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.11.0...v21.12.0 "diff with v21.11.0")
+*   2024-02-05 [`38988ba`](https://github.com/nophead/NopSCADlib/commit/38988bacfa41dea19408b19cf06f134e51338ab0 "show commit") [C.P.](# "Chris Palmer") Updated images.
+
+*   2024-02-04 [`8298039`](https://github.com/nophead/NopSCADlib/commit/82980392c9c9d13aa4619db888bd38c620b09ac0 "show commit") [J.R.](# "Jeroen Roos") Add extra MDF thicknesses
+
+*   2024-02-05 [`1ce7b64`](https://github.com/nophead/NopSCADlib/commit/1ce7b64c73c77aa86f20c2b069ee031b30024818 "show commit") [C.P.](# "Chris Palmer") Updated image.
+
+*   2024-02-04 [`f85fdca`](https://github.com/nophead/NopSCADlib/commit/f85fdca051a3cd11a35bfe2424c50cc4da018de4 "show commit") [J.R.](# "Jeroen Roos") Add generating SVG file for CNC usage
+
+ * Generate SVG files, like DXF files for CNC usage
+
+*   2024-02-04 [`926dd8c`](https://github.com/nophead/NopSCADlib/commit/926dd8ca908030328d394dcc20e16ce036cbc51c "show commit") [C.P.](# "Chris Palmer") Reordered the PCB lists to fix the layout.
+Updated the images.
+
+*   2024-02-02 [`3961d7f`](https://github.com/nophead/NopSCADlib/commit/3961d7f1a4d3fd04a2fb174735d52ad8f95ecf7a "show commit") [L.B.](# "Lukas Burger") add HW-803 5V 1 way relay module
+
+*   2024-02-04 [`43b101a`](https://github.com/nophead/NopSCADlib/commit/43b101ae1eb063018b29eb97172722d1977c1c53 "show commit") [C.P.](# "Chris Palmer") Reordered the display list into reducing height for better layout.
+Updated the images.
+
+*   2024-01-31 [`1996189`](https://github.com/nophead/NopSCADlib/commit/1996189ab232820a16cfa4a4b2d627cf508d6eb9 "show commit") [L.B.](# "Lukas Burger") update readme file
+
+*   2024-01-30 [`9f8c309`](https://github.com/nophead/NopSCADlib/commit/9f8c3096435b7fea8a8870f07781a0f52adac7c3 "show commit") [L.B.](# "Lukas Burger") add display LCD2004A
+
+*   2024-02-04 [`e3ad327`](https://github.com/nophead/NopSCADlib/commit/e3ad32713dbb5dfab3a14d70f9c6f5f8aaaa59d1 "show commit") [C.](# "Chris") Rename `pcb_utils.scad` to `PCB_utils.scad`
+
+ * Fixed the filename case of `PCB_utils.scad`.
+
+*   2024-01-14 [`3995f68`](https://github.com/nophead/NopSCADlib/commit/3995f685dd31b087a2eec4cfe8b9f760f5eef3b9 "show commit") [C.P.](# "Chris Palmer") Removed debug `echo()`.
+
+### [v21.11.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.11.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.10.1...v21.11.0 "diff with v21.10.1")
+*   2024-01-14 [`41859ec`](https://github.com/nophead/NopSCADlib/commit/41859ec2245e3fee41cb9c79fb5a627193a4fec8 "show commit") [C.P.](# "Chris Palmer") Added `screw_thread_radius()` and `screw_angle()` functions.
+
+*   2024-01-14 [`cd95ef9`](https://github.com/nophead/NopSCADlib/commit/cd95ef95abed30e4004905972c9abcacdad0dc5e "show commit") [C.P.](# "Chris Palmer") Added GT2x12, GT3x6, GT3x9 and GT3x12 belts.
+
+*   2024-01-12 [`7a9e738`](https://github.com/nophead/NopSCADlib/commit/7a9e73830e16a843a14debb8d9b770243067cf63 "show commit") [C.P.](# "Chris Palmer") Belt part number is not always the same as the pitch.
+
+#### [v21.10.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.10.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.10.0...v21.10.1 "diff with v21.10.0")
+*   2023-12-01 [`ebe2dfd`](https://github.com/nophead/NopSCADlib/commit/ebe2dfd4fd8ba042b634030f7d463d0ba0d8c4cd "show commit") [C.P.](# "Chris Palmer") Fixed explode line position on short inserts.
+
+### [v21.10.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.10.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.9.1...v21.10.0 "diff with v21.9.1")
+*   2023-11-27 [`0137a43`](https://github.com/nophead/NopSCADlib/commit/0137a43a638777ecdf6b311579006c0922650a9c "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2023-11-12 [`72e5d1a`](https://github.com/nophead/NopSCADlib/commit/72e5d1abfb744ddcdf665b02ba7a1cf2b6bcff38 "show commit") [X.](# "XrXca") Update `pcbs.scad`
+
+ * Update `pcbs.scad`
+
+ * Update `pcbs.scad`
+
+ * Update `pcbs.scad`
+
+*   2023-11-27 [`b5afd7b`](https://github.com/nophead/NopSCADlib/commit/b5afd7bd41a1a46b7a1745c30755b3fb6c25b9a1 "show commit") [C.P.](# "Chris Palmer") ESP-01M added.
+
+#### [v21.9.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.9.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.9.0...v21.9.1 "diff with v21.9.0")
+*   2023-11-26 [`b9d1017`](https://github.com/nophead/NopSCADlib/commit/b9d101749eb2b19963299d85b75f0fa489fba552 "show commit") [C.P.](# "Chris Palmer") Updated images due to pixel differences on new PC
+
+*   2023-11-26 [`17979d3`](https://github.com/nophead/NopSCADlib/commit/17979d320539ca861300ecd4e42c01a913861066 "show commit") [C.P.](# "Chris Palmer") Fixed typo in comment.
+
+*   2023-10-30 [`73567ed`](https://github.com/nophead/NopSCADlib/commit/73567eda396214f1f882d62fb1d8a0ecbf2e7d94 "show commit") [C.P.](# "Chris Palmer") MULTIWATT11 package now generates a BOM entry.
+
+*   2023-10-30 [`f5c74a8`](https://github.com/nophead/NopSCADlib/commit/f5c74a8561f1e76f331c2d0027ecfd34bb2e7f3b "show commit") [C.P.](# "Chris Palmer") Corrected gallery.
+
+*   2023-10-30 [`04090b8`](https://github.com/nophead/NopSCADlib/commit/04090b816bfa3b6587cf6dcddbd54e5a94cb2420 "show commit") [C.P.](# "Chris Palmer") Updated the gallery.
+
+*   2023-10-29 [`06d4918`](https://github.com/nophead/NopSCADlib/commit/06d49186300b03bf4699cefbbcef0c0b8f7e9caa "show commit") [C.P.](# "Chris Palmer") Updated examples.
+
+### [v21.9.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.9.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.8.0...v21.9.0 "diff with v21.8.0")
+*   2023-10-29 [`2d091b9`](https://github.com/nophead/NopSCADlib/commit/2d091b9d16d33cf8b8751b2a436019c9032422a3 "show commit") [C.P.](# "Chris Palmer") Added a constructor function for PCBs.
+PCB text can now specify a colour.
+Added `SOT23_6,` `TSOT23_8` and CAP1210 SMD packages.
+Added ESP-201 Wifi Module PCB.
+Added ESP12F Wifi module.
+Added `tiny_buck` converter PCB.
+Made 2p54joiner a bit longer.
+Fixed SOIC gullwing shape.
+Added Wifi antennas.
+Added Yunpen filtered IEC mains inlet.
+Added power jack socket.
+Added right angle option for LEDs.
+Added `gear_motors`.
+Added 686ZZ and 696ZZ ball bearings.
+Added two larger box section tubes.
+Added right angle option to `square_buttons`. Doesn't draw the frame yet.
+Added multiwatt11 package for L6203.
+Added ONS9143A 13A mains socket.
+Added radial electrolytic capacitors.
+Added `LDE10_20B` PSU module.
+Added `screw_tearsink()` to make horizontal countersunk holes.
+Can now have solid tracks on veroboard.
+Added `veroboard_base()` module to make an STL for a base with spacers.
+Corrected M6 spring washer thickness.
+Can now specify the height of a solder meniscus.
+`slot()` now has a `center` option.
+Added `button_6mm_7` with a taller button.
+Added default fa, fs and fn constants used for drawing vitamins.
+These can be set via `$default_fa` and `$default_fs` that can also be set
+by environment variables: `NOPSCADLIB_DEFAULT_FA` and `NOPSCADLIB_DEFAULT_FS`.
+
+### [v21.8.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.8.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.7.0...v21.8.0 "diff with v21.7.0")
+*   2023-07-28 [`74293b6`](https://github.com/nophead/NopSCADlib/commit/74293b6c22c51c326e2d541d1a68a1cd63659c2b "show commit") [C.](# "Chris") Added axial diodes, radial transistors, discs and modules.
+Verboard and perboard components get solder menisci added automatically.
+Radial leads now made by bezier curves rather than straights and arcs.
+
+### [v21.7.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.7.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.6.1...v21.7.0 "diff with v21.6.1")
+*   2023-07-22 [`523fc9e`](https://github.com/nophead/NopSCADlib/commit/523fc9e9a5c8a566bde2bfe8555d5f6dddd8f05b "show commit") [C.](# "Chris") Adafruit Feather 405 contributed by Chris Lott.
+
+#### [v21.6.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.6.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.6.0...v21.6.1 "diff with v21.6.0")
+*   2023-07-22 [`09d2ffb`](https://github.com/nophead/NopSCADlib/commit/09d2ffb126cf9d9ad2d68171583e11708227b704 "show commit") [C.](# "Chris") Typo in comment fixed.
+
+*   2023-07-22 [`3c37035`](https://github.com/nophead/NopSCADlib/commit/3c370359c838a48d85e25709bcbced61249c237d "show commit") [C.](# "Chris") Make front page `readme.md` labels lower case as GitHub seems have stopped working with uppercase.
+
+### [v21.6.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.6.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.5.1...v21.6.0 "diff with v21.5.1")
+*   2023-07-22 [`e3cde64`](https://github.com/nophead/NopSCADlib/commit/e3cde64b61b6abfc4a2883e8aa32b66346fde1c4 "show commit") [C.](# "Chris") `open_bearing_theta()` now derived from `open_bearing_width()`.
+
+*   2023-07-22 [`e61ce02`](https://github.com/nophead/NopSCADlib/commit/e61ce0241443fb2c1f0585953bd3f7383b217086 "show commit") [C.](# "Chris") Moved things around for better test images.
+
+*   2023-07-22 [`f8e1256`](https://github.com/nophead/NopSCADlib/commit/f8e125654ed60842d6ca7f33a91377d9cb5f1dc9 "show commit") [C.](# "Chris") Rendred the 3D difference.
+
+*   2023-07-22 [`62b1511`](https://github.com/nophead/NopSCADlib/commit/62b1511c82eacb5124302aed36a52fe0d8104385 "show commit") [C.](# "Chris") Removed 3D difference for speed.
+
+*   2023-06-27 [`84d98a1`](https://github.com/nophead/NopSCADlib/commit/84d98a1081d38c56d5b02645a99223b7616fcd70 "show commit") [J.R.](# "Jeroen Roos") Added SBR rails
+
+ * This change adds
+- SBR rails. For now only SBR16
+- The bearing block that goes with it (SBR16UU)
+- An 'open' linear bearing (LM16UUOP) that is used by the bearing block
+- A 28mm circlip that has a wider opening than then normal circlip.
+`(circlip_28iw)`
+
+#### [v21.5.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.5.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.5.0...v21.5.1 "diff with v21.5.0")
+*   2023-06-29 [`5899ffe`](https://github.com/nophead/NopSCADlib/commit/5899ffe88f7952108ce928a5a6188b4aad5044c5 "show commit") [C.](# "Chris") More typos in comments.
+
+*   2023-06-28 [`b051311`](https://github.com/nophead/NopSCADlib/commit/b05131145caf500cd9198b1e9b9fafc69506b50f "show commit") [C.](# "Chris") Comment typo.
+
+### [v21.5.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.5.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.4.1...v21.5.0 "diff with v21.4.1")
+*   2023-05-08 [`c3f3d62`](https://github.com/nophead/NopSCADlib/commit/c3f3d629b1ff79d40cc5ad3efcb33e940d6c8056 "show commit") [C.P.](# "Chris Palmer") Added PanelDue V3.
+
+*   2023-05-08 [`c7ba052`](https://github.com/nophead/NopSCADlib/commit/c7ba052ccf24d764aa6460d4559e92596c9e4cf4 "show commit") [C.P.](# "Chris Palmer") Added SMD QFP package.
+
+*   2023-05-08 [`c2c5f50`](https://github.com/nophead/NopSCADlib/commit/c2c5f509860b909ca8fca5ffcc65dbef2f7177c5 "show commit") [C.P.](# "Chris Palmer") Can now used `smd_res()` to draw chokes.
+
+*   2023-05-08 [`d0ae8ca`](https://github.com/nophead/NopSCADlib/commit/d0ae8ca216108f53c9b8e60896ea9b59b845b7e0 "show commit") [C.P.](# "Chris Palmer") Added the ability to have more than one grid on a PCB.
+
+*   2023-05-08 [`e81dcfd`](https://github.com/nophead/NopSCADlib/commit/e81dcfdbd8163ce8e2db450f3a20c296c21327a8 "show commit") [C.P.](# "Chris Palmer") Added right angle option to box headers.
+
+#### [v21.4.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.4.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.4.0...v21.4.1 "diff with v21.4.0")
+*   2023-05-08 [`06a286d`](https://github.com/nophead/NopSCADlib/commit/06a286dc989e9cc8cf7918049cd16a862b1a9b94 "show commit") [C.P.](# "Chris Palmer") Fixed missing BOM entry for JST connectors.
+Fixed default colour for JST connectors.
+Corrected BOM entry to show right angle options on Molex and pin headers.
+
+*   2023-05-08 [`f5496c3`](https://github.com/nophead/NopSCADlib/commit/f5496c373a1ab8ae47d07cc0a52d76e4299876cc "show commit") [C.P.](# "Chris Palmer") Fixed typo in `smd_diode(DO214AC)` package name.
+
+### [v21.4.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.4.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.3.1...v21.4.0 "diff with v21.3.1")
+*   2023-05-01 [`5e24a32`](https://github.com/nophead/NopSCADlib/commit/5e24a32a0b422e8032c3c5d377c1a756ff6f1022 "show commit") [C.P.](# "Chris Palmer") Added ESP32 camera.
+
+*   2023-05-01 [`fbd8d8c`](https://github.com/nophead/NopSCADlib/commit/fbd8d8c7cdff0bd7de0d42aa74bf0ab6551c205b "show commit") [C.P.](# "Chris Palmer") Added `smd_coax`
+
+#### [v21.3.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.3.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.3.0...v21.3.1 "diff with v21.3.0")
+*   2023-04-29 [`b1592f5`](https://github.com/nophead/NopSCADlib/commit/b1592f51d4b16a125d9b28edae56f758fcac2f02 "show commit") [C.P.](# "Chris Palmer") Fixed `bom.py,` `views.py` and `tests.py` so that vitamin descriptions can contain more than one colon.
+
+### [v21.3.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.3.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.2.0...v21.3.0 "diff with v21.2.0")
+*   2023-04-23 [`61fc194`](https://github.com/nophead/NopSCADlib/commit/61fc19499524a2b750d17a90627a697bf626bbf0 "show commit") [C.P.](# "Chris Palmer") Refactored for readability.
+
+*   2023-04-23 [`f8af615`](https://github.com/nophead/NopSCADlib/commit/f8af61568a8362cf470bc9eb8de8323c8fc001c7 "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2023-04-23 [`05d1684`](https://github.com/nophead/NopSCADlib/commit/05d16841c4d48c5c8f453e438af0ff6eb5bffe53 "show commit") [C.P.](# "Chris Palmer") Fixed thread pitch.
+
+*   2023-04-05 [`07e7eb7`](https://github.com/nophead/NopSCADlib/commit/07e7eb77f73fcaab4291388b49781b0e2de5a64c "show commit") [M.B.](# "Martin Budden") Added support for shoulder screws.
+
+### [v21.2.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.2.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.1.2...v21.2.0 "diff with v21.1.2")
+*   2023-04-22 [`5fc70e1`](https://github.com/nophead/NopSCADlib/commit/5fc70e19ac5d320290f4a2151665e83f0829d796 "show commit") [C.P.](# "Chris Palmer") Added SMD Tantalum caps and 0502 and 0402 resistor and capacitors.
+
+#### [v21.1.2](https://github.com/nophead/NopSCADlib/releases/tag/v21.1.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.1.1...v21.1.2 "diff with v21.1.1")
+*   2023-03-29 [`1c5d9a8`](https://github.com/nophead/NopSCADlib/commit/1c5d9a8ef5892caf9b2c4d0d84dc3d20eba699d3 "show commit") [C.P.](# "Chris Palmer") Removed utility functions used by `invert()` from documentation as not generally useful.
+
+#### [v21.1.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.1.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.1.0...v21.1.1 "diff with v21.1.0")
+*   2023-03-29 [`d3f0bfc`](https://github.com/nophead/NopSCADlib/commit/d3f0bfc17f82b42f2d81f2d72a54c3f0cc375604 "show commit") [C.P.](# "Chris Palmer") Fixed typo in resistor comment.
+
+### [v21.1.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.1.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v21.0.1...v21.1.0 "diff with v21.0.1")
+*   2023-03-11 [`18cd33c`](https://github.com/nophead/NopSCADlib/commit/18cd33c66388d4d4e7be664c0f883cff0854524b "show commit") [C.](# "Chris") Fixed typos, corrected vitamin call, added boilerplate, updated images and readme.
+
+*   2023-03-11 [`ebfb330`](https://github.com/nophead/NopSCADlib/commit/ebfb330ac69f4e90de84ecffea94ce067d041031 "show commit") [D.K.](# "Dirkjan Krijnders") Added comments and make holes a `linear_extrude` result
+
+*   2023-03-08 [`c5fab08`](https://github.com/nophead/NopSCADlib/commit/c5fab08a454383b295be2b151fd715ee79b85db3 "show commit") [D.K.](# "Dirkjan Krijnders") Added `photo_interrupter` to the test
+
+*   2023-03-08 [`fecc937`](https://github.com/nophead/NopSCADlib/commit/fecc93746ab80ad1fc74f0fe3465de92ffee7b36 "show commit") [D.K.](# "Dirkjan Krijnders") Added vitamins for photo interrupters
+
+#### [v21.0.1](https://github.com/nophead/NopSCADlib/releases/tag/v21.0.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v21.0.0...v21.0.1 "diff with v21.0.0")
+*   2023-03-11 [`07da7d8`](https://github.com/nophead/NopSCADlib/commit/07da7d8dc7d3fb769e57a6b9ca86465357007b6c "show commit") [C.](# "Chris") Removed `Python2.7` from `usage.md` as no longer works.
+
+*   2023-03-10 [`5a3bbf9`](https://github.com/nophead/NopSCADlib/commit/5a3bbf967dc967eca4726af517382e7eb875dde1 "show commit") [C.](# "Chris") Fixed broken cover image.
+
+## [v21.0.0](https://github.com/nophead/NopSCADlib/releases/tag/v21.0.0 "show release") Breaking Changes [...](https://github.com/nophead/NopSCADlib/compare/v20.24.0...v21.0.0 "diff with v20.24.0")
+*   2023-03-10 [`9d4d5ab`](https://github.com/nophead/NopSCADlib/commit/9d4d5aba17974e7b5911e723d48d7b9403a4bcb4 "show commit") [C.](# "Chris") `veroboard_assembly()` renamed `veroboard_fastened_assembly()`.
+`veroboard_assembly()` now doesn't include the fasteners.
+
+### [v20.24.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.24.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.23.0...v20.24.0 "diff with v20.23.0")
+*   2023-03-10 [`d939401`](https://github.com/nophead/NopSCADlib/commit/d939401183d12af3452e17aa5b020dab50f8edb0 "show commit") [C.](# "Chris") Added `vero_grid_pos()` function.
+
+*   2023-03-10 [`584542f`](https://github.com/nophead/NopSCADlib/commit/584542f87a27efe06ff3ba597dbaff1f3c32c4fd "show commit") [C.](# "Chris") Added fastons.
+
+*   2023-03-10 [`62372a0`](https://github.com/nophead/NopSCADlib/commit/62372a049b9ac7a0fecebfd3618df91ff6ffa87a "show commit") [C.](# "Chris") The `wire()` module can now draw wires if a path is specified.
+
+*   2023-03-10 [`14698e5`](https://github.com/nophead/NopSCADlib/commit/14698e5203e1e860230ddb3729816730e221f49c "show commit") [C.](# "Chris") Added PTFE heatshrink sleeving.
+
+*   2023-03-10 [`14f6bb5`](https://github.com/nophead/NopSCADlib/commit/14f6bb533a3dcc1d36b2b764906cdca7d8d24484 "show commit") [C.](# "Chris") Added `sleeving_length` to `al_clad_resistor_assembly()`.
+
+*   2023-03-10 [`01e9aae`](https://github.com/nophead/NopSCADlib/commit/01e9aae698f57bac6046d1a04aaa11b0c88006b5 "show commit") [C.](# "Chris") Added `TO220_size()` and `TO220_lead_pos(i,` l).
+
+*   2023-02-04 [`27f9b24`](https://github.com/nophead/NopSCADlib/commit/27f9b242f250c0083344a05527055bb2fbb56f91 "show commit") [C.P.](# "Chris Palmer") Added crystal, transistors, diode and LEDs to Arduino Uno.
+
+*   2023-02-03 [`f07fda7`](https://github.com/nophead/NopSCADlib/commit/f07fda70cdfc743cd2462636fcc1eb13a092f9e4 "show commit") [C.P.](# "Chris Palmer") Wire links can now be sleeved.
+
+*   2023-02-01 [`abf1f1a`](https://github.com/nophead/NopSCADlib/commit/abf1f1ab3f3eddc2f274df649e8481a4117901eb "show commit") [C.P.](# "Chris Palmer") PCB blocks can now have rounded edges for more realistic cans.
+
+### [v20.23.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.23.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.22.0...v20.23.0 "diff with v20.22.0")
+*   2023-02-01 [`470d6d6`](https://github.com/nophead/NopSCADlib/commit/470d6d6216b1cef8ce6cafd4b14300edb62eac4a "show commit") [C.P.](# "Chris Palmer") Started radial components with crystals.
+
+*   2023-02-01 [`0e5e15a`](https://github.com/nophead/NopSCADlib/commit/0e5e15a747fed6b4ef434c9796bef6cb9e658c0e "show commit") [C.P.](# "Chris Palmer") Added SOIC14 package.
+
+*   2023-02-01 [`3f84912`](https://github.com/nophead/NopSCADlib/commit/3f84912e555cd4f7e97e7cac3091260fe969df4c "show commit") [C.P.](# "Chris Palmer") Added `rounded_top_rectangle()`.
+
+### [v20.22.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.22.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.21.0...v20.22.0 "diff with v20.21.0")
+*   2023-01-29 [`01eeafb`](https://github.com/nophead/NopSCADlib/commit/01eeafb2552a4fcc735e85e8d0e7c0855c18be8c "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2023-01-29 [`dd876c8`](https://github.com/nophead/NopSCADlib/commit/dd876c8fc9f2658332c1c3200a6a67e1b78a8f64 "show commit") [C.P.](# "Chris Palmer") Added vertical USB connector to PCB test.
+
+*   2023-01-29 [`ff40a27`](https://github.com/nophead/NopSCADlib/commit/ff40a276e1a37836ab011689e849da76ce19d4a7 "show commit") [C.P.](# "Chris Palmer") Fixed display position in tests.
+
+*   2023-01-29 [`463c620`](https://github.com/nophead/NopSCADlib/commit/463c620cc3053428ecf7ca6360477992b9538978 "show commit") [C.P.](# "Chris Palmer") Made a new row of PCBs in the test.
+
+*   2023-01-29 [`7b1a916`](https://github.com/nophead/NopSCADlib/commit/7b1a9160434f5b000c83f03d39305f73b0bbf646 "show commit") [C.P.](# "Chris Palmer") Fixed vAx1 dimensions, removed flange and repositioned the tongue.
+
+*   2023-01-28 [`de05134`](https://github.com/nophead/NopSCADlib/commit/de051343d01e57b5e0c43a5f8de69eb508bd86ca "show commit") [E.F.](# "Elliot Foster") WiP of an Orange Pi Zero 2 PCB
+
+### [v20.21.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.21.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.20.1...v20.21.0 "diff with v20.20.1")
+*   2023-01-28 [`34719c3`](https://github.com/nophead/NopSCADlib/commit/34719c33607f8720701eb59719af337cb4a1b777 "show commit") [C.P.](# "Chris Palmer") Box shelves now have screws in the corners to hold them down.
+
+*   2023-01-28 [`024439d`](https://github.com/nophead/NopSCADlib/commit/024439d4c2d0f302027d130584cedadb6d9d14a9 "show commit") [C.P.](# "Chris Palmer") Can now specify short inserts to be used for `butt_boxes`.
+
+#### [v20.20.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.20.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.20.0...v20.20.1 "diff with v20.20.0")
+*   2023-01-28 [`005c112`](https://github.com/nophead/NopSCADlib/commit/005c112ba9fc210f88fa82cf638108dbe0b20f26 "show commit") [C.P.](# "Chris Palmer") Added values to the SMD capacitors on the example PCB.
+
+*   2023-01-28 [`dfbcbf8`](https://github.com/nophead/NopSCADlib/commit/dfbcbf84ab57a2c70aaf5b1fa26668278b6993d3 "show commit") [C.P.](# "Chris Palmer") Changed OpenGrab link as `nicadrone.com` has gone.
+
+### [v20.20.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.20.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.19.1...v20.20.0 "diff with v20.19.1")
+*   2023-01-24 [`e7e9313`](https://github.com/nophead/NopSCADlib/commit/e7e9313e71fb2b30aca142ceded2dc5615695071 "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2023-01-23 [`dab06ce`](https://github.com/nophead/NopSCADlib/commit/dab06ce4ca771787aa625d1370b4f2b779580315 "show commit") [E.F.](# "Elliot Foster") Add Raspberry Pi 3 A+ to pcbs
+
+#### [v20.19.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.19.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.19.0...v20.19.1 "diff with v20.19.0")
+*   2023-01-24 [`494002a`](https://github.com/nophead/NopSCADlib/commit/494002aebeda560e65ca4f8cb3794707487a3c2a "show commit") [C.P.](# "Chris Palmer") Added test to MP1584EN PCB.
+
+*   2023-01-24 [`77e948f`](https://github.com/nophead/NopSCADlib/commit/77e948f43c911442211bcbf6d1b1520184d2c70b "show commit") [C.P.](# "Chris Palmer") Added can bus connectors to OpenGrab model.
+Tweaked some PCB component positions.
+
+*   2023-01-24 [`543cdb4`](https://github.com/nophead/NopSCADlib/commit/543cdb4e01d38308a06d4368ebabadb85c696567 "show commit") [C.P.](# "Chris Palmer") Increased the clearance of holes made for pin header.
+
+### [v20.19.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.19.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.18.1...v20.19.0 "diff with v20.18.1")
+*   2023-01-12 [`ebd50ba`](https://github.com/nophead/NopSCADlib/commit/ebd50bae535283b94b310ee74c9b98b2e3b7f8be "show commit") [C.P.](# "Chris Palmer") Added SMD diodes, inductors and potentiometers.
+Complete set of components added to MP1584EN buck regulator.
+
+#### [v20.18.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.18.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.18.0...v20.18.1 "diff with v20.18.0")
+*   2023-01-07 [`ec3e752`](https://github.com/nophead/NopSCADlib/commit/ec3e752fc5b5586ef5ac838c709ab4b704dac817 "show commit") [C.](# "Chris") Added missing documentation for `hinge_female()` module.
+
+### [v20.18.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.18.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.17.0...v20.18.0 "diff with v20.17.0")
+*   2023-01-07 [`8587d52`](https://github.com/nophead/NopSCADlib/commit/8587d52d1b87dc9932c7e458798d4a6f3722a371 "show commit") [C.](# "Chris") Added `screw_keyhole()` module.
+
+### [v20.17.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.17.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.16.0...v20.17.0 "diff with v20.16.0")
+*   2023-01-07 [`cec8c3a`](https://github.com/nophead/NopSCADlib/commit/cec8c3a107b81f8badb4e2077a318cc36fcdd481 "show commit") [C.](# "Chris") Added printed LED bezels.
+
+### [v20.16.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.16.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.15.2...v20.16.0 "diff with v20.15.2")
+*   2023-01-07 [`848dcb8`](https://github.com/nophead/NopSCADlib/commit/848dcb86b9f1d9a164366208da76faea6d6050f1 "show commit") [C.](# "Chris") Added 8mm LED.
+
+#### [v20.15.2](https://github.com/nophead/NopSCADlib/releases/tag/v20.15.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.15.1...v20.15.2 "diff with v20.15.1")
+*   2023-01-07 [`a31f6f1`](https://github.com/nophead/NopSCADlib/commit/a31f6f100ce18168594b02a25d5229536f02a65c "show commit") [C.](# "Chris") Revised LED dimensions.
+
+*   2023-01-07 [`b3dd635`](https://github.com/nophead/NopSCADlib/commit/b3dd635889f7ed4f779ee9408ff81ac64cb1f7ec "show commit") [C.](# "Chris") Fixed duplicated `dxf()` calls in printed box and `butt_box`.
+Client code now calls `dxf()` so that the generated files can be used to speed up assembly views.
+
+#### [v20.15.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.15.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.15.0...v20.15.1 "diff with v20.15.0")
+*   2022-12-06 [`e256801`](https://github.com/nophead/NopSCADlib/commit/e256801206189eafcf020cc7fdb50fff4314c397 "show commit") [C.P.](# "Chris Palmer") Added comment to indicate the `.py` suffix may be needed on linux and OSX.
+
+### [v20.15.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.15.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.14.1...v20.15.0 "diff with v20.14.1")
+*   2022-12-05 [`9dc8062`](https://github.com/nophead/NopSCADlib/commit/9dc8062befa72c6650b17d34428bfe39e709fdc2 "show commit") [M.W.](# "Marek Wodzinski") Include `terminal.scad` in `lib.scad` to allow use of `terminal_block()`.
+
+#### [v20.14.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.14.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.14.0...v20.14.1 "diff with v20.14.0")
+*   2022-10-20 [`f2313a3`](https://github.com/nophead/NopSCADlib/commit/f2313a3f0ccbb130a7bd974b9a02f5ef6841f39e "show commit") [D.](# "drf5n") update `nuts.scad` table comment
+
+ * Change comment about nut sizes from radius to diameter.
+
+### [v20.14.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.14.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.13.0...v20.14.0 "diff with v20.13.0")
+*   2022-09-29 [`f1737d2`](https://github.com/nophead/NopSCADlib/commit/f1737d257b54957772ab6faea102f8ddb829119b "show commit") [C.](# "Chris") Updated images and readme.
+
+*   2022-09-27 [`ce258d6`](https://github.com/nophead/NopSCADlib/commit/ce258d6d4f1de5fbdda76a78b0ad2cbf1b41a3f9 "show commit") [J.R.](# "Jeroen Roos") Leadnuts: add nuthousing
+
+### [v20.13.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.13.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.12.0...v20.13.0 "diff with v20.12.0")
+*   2022-09-27 [`ec85cc5`](https://github.com/nophead/NopSCADlib/commit/ec85cc5d4c76baedae670a5652194bd1799a7094 "show commit") [C.](# "Chris") Updated images and readme.
+
+*   2022-09-24 [`fb66954`](https://github.com/nophead/NopSCADlib/commit/fb6695471f935057a0949e55f70a39911ac81f4c "show commit") [J.R.](# "Jeroen Roos") Shaft coupling: Add flexible SC `/` 6x8 flexible SC
+
+ * Added the possibility for shaft couplings to be flexible and added a 6x8
+example of such a coupling.
+
+### [v20.12.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.12.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.11.0...v20.12.0 "diff with v20.11.0")
+*   2022-09-27 [`c9ac393`](https://github.com/nophead/NopSCADlib/commit/c9ac393c0c7b025b3e6ad9e1030d1b13f8b879c3 "show commit") [C.](# "Chris") Printed corner blocks now have a `short_insert` option.
+
+*   2022-09-27 [`208334a`](https://github.com/nophead/NopSCADlib/commit/208334a585ed0605bf7dbaab1050c060aa15edb7 "show commit") [C.](# "Chris") Printed box now has a short insert option.
+
+*   2022-09-27 [`3a17b89`](https://github.com/nophead/NopSCADlib/commit/3a17b89d5ceb69834b23ff6bc46523f2dfb15f99 "show commit") [C.](# "Chris") Added short inserts and M5 inserts.
+`screw_insert()` now takes a short flag.
+`screw_length()` can now be passed an insert object.
+
+*   2022-09-25 [`0f36c02`](https://github.com/nophead/NopSCADlib/commit/0f36c02b5e34b0b45d258ff8e6ed4536f0601d92 "show commit") [C.](# "Chris") Added `layer_height0` global variable and updated `round_to_layer()` to handle it.
+
+ * Moved functions from `global_defs.scad` to `global.scad` so they get documented.
+
+### [v20.11.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.11.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.10.3...v20.11.0 "diff with v20.10.3")
+*   2022-08-30 [`c1e4625`](https://github.com/nophead/NopSCADlib/commit/c1e4625382646faf6a00e78ac01e495a88169b35 "show commit") [C.](# "Chris") Replaced generic chips with SOIC8.
+Updated images and readme.
+
+*   2022-08-29 [`6059c5f`](https://github.com/nophead/NopSCADlib/commit/6059c5f5569a9fc2ba08e448bbf90328fb985ed3 "show commit") [C.](# "ChemicalXandco") add L9110S 2-Channel motor driver module
+
+#### [v20.10.3](https://github.com/nophead/NopSCADlib/releases/tag/v20.10.3 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.10.2...v20.10.3 "diff with v20.10.2")
+*   2022-08-03 [`4ceb6bd`](https://github.com/nophead/NopSCADlib/commit/4ceb6bd8639cd39ac39798b3eccd178526a56c13 "show commit") [C.](# "Chris") Fixed a gap in printed hinges.
+
+#### [v20.10.2](https://github.com/nophead/NopSCADlib/releases/tag/v20.10.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.10.1...v20.10.2 "diff with v20.10.1")
+*   2022-07-16 [`664d04a`](https://github.com/nophead/NopSCADlib/commit/664d04ad93c28c2614d5991e2b8dfa78964f6a99 "show commit") [C.](# "Chris") Now logs the time taken to run non OpenSCAD commands in `cmd_times.txt`
+
+#### [v20.10.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.10.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.10.0...v20.10.1 "diff with v20.10.0")
+*   2022-06-30 [`f44d9ae`](https://github.com/nophead/NopSCADlib/commit/f44d9ae424f407baa4f8b5187819b43b30800257 "show commit") [M.B.](# "Martin Budden") Made includes relative in `bldc_motors`.
+
+*   2022-07-15 [`1238dba`](https://github.com/nophead/NopSCADlib/commit/1238dba90ac5c48ba01abb9e7926a064353489de "show commit") [C.](# "Chris") Updated readme.
+
+*   2022-06-22 [`aec7211`](https://github.com/nophead/NopSCADlib/commit/aec72118fac218ca033264fa7b28db2bff7db10a "show commit") [M.B.](# "Martin Budden") Fixed typos.
+
+### [v20.10.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.10.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.9.0...v20.10.0 "diff with v20.9.0")
+*   2022-07-04 [`b58a59d`](https://github.com/nophead/NopSCADlib/commit/b58a59dab70bb414dd90dc5a9055d6bf3b4f6144 "show commit") [C.](# "Chris") Updated images and readme.
+
+*   2022-07-04 [`6b6ffb2`](https://github.com/nophead/NopSCADlib/commit/6b6ffb2b74cc89ffecbcad7c304c3c4f047a8805 "show commit") [C.](# "Chris") Added SOICs to tests.
+
+*   2022-07-04 [`1e30ad2`](https://github.com/nophead/NopSCADlib/commit/1e30ad24e802dc6e075fd73185551202101d4793 "show commit") [C.](# "Chris") Added `smd_soic` to  `pcb_component()`.
+
+*   2022-07-04 [`dc715ff`](https://github.com/nophead/NopSCADlib/commit/dc715ff2b70ae98615ee43750f3bb7613b481f7b "show commit") [C.](# "Chris") Tweaked SOIC text size.
+
+*   2022-07-04 [`c57c202`](https://github.com/nophead/NopSCADlib/commit/c57c202e31c70351f38ef6299c60b0deb54bd296 "show commit") [M.](# "MS3FGX") Adjust lead sizing
+
+*   2022-07-02 [`26bfe96`](https://github.com/nophead/NopSCADlib/commit/26bfe96614741206c8da6d126edfa9eb5326cb8f "show commit") [M.](# "MS3FGX") Add SOIC SMD Package
+
+### [v20.9.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.9.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.8.0...v20.9.0 "diff with v20.8.0")
+*   2022-07-02 [`2cc3c6e`](https://github.com/nophead/NopSCADlib/commit/2cc3c6ec7c9d8ee285d49111559d40fb2a3112e1 "show commit") [C.](# "Chris") Updated images and readme.
+
+*   2022-07-02 [`633843d`](https://github.com/nophead/NopSCADlib/commit/633843d45eacd42619581a4619752700e1cd687b "show commit") [C.](# "Chris") Added LED1206 example to PCB test.
+
+*   2022-07-02 [`1a472c8`](https://github.com/nophead/NopSCADlib/commit/1a472c8ed549e230f7df93989f3e1db729b4b281 "show commit") [M.](# "MS3FGX") Add 1206 SMD LED
+
+### [v20.8.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.8.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.7.0...v20.8.0 "diff with v20.7.0")
+*   2022-06-23 [`ecd534b`](https://github.com/nophead/NopSCADlib/commit/ecd534b5773928b9987023bd4370f661cc750fbd "show commit") [C.P.](# "Chris Palmer") Added `NEMA_connection_pos()`.
+Changed motor wire colours and tweaked wire position and size,
+
+### [v20.7.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.7.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.6.1...v20.7.0 "diff with v20.6.1")
+*   2022-06-21 [`28c36a4`](https://github.com/nophead/NopSCADlib/commit/28c36a4e966cceccbbdc330cf9a6fdeaa0283889 "show commit") [C.P.](# "Chris Palmer") `rounded_polygon()` now copes with the degenerate case when tangents intersect to form a sharp corner with no arc.
+Added an `offset()` function with some limitations.
+
+#### [v20.6.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.6.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.6.0...v20.6.1 "diff with v20.6.0")
+*   2022-06-21 [`6a9af0a`](https://github.com/nophead/NopSCADlib/commit/6a9af0af8aef68978b8be248810d07c85150341b "show commit") [C.P.](# "Chris Palmer") Updates images
+
+*   2022-06-21 [`a6a0808`](https://github.com/nophead/NopSCADlib/commit/a6a08088d986dbcbc4d01c06e0475176ec8bc76f "show commit") [M.B.](# "Martin Budden") Fixed dimensions of E1515 extrusion.
+
+*   2022-06-21 [`bcf9fb3`](https://github.com/nophead/NopSCADlib/commit/bcf9fb38dfabaf93508a380b85b12e3b23f28cf8 "show commit") [M.B.](# "Martin Budden") Fixed typos.
+
+*   2022-06-21 [`06443a5`](https://github.com/nophead/NopSCADlib/commit/06443a558b407292a1e73f60c24cc90ec618d511 "show commit") [M.B.](# "Martin Budden") Standardised setting of imgsize in scripts.
+
+### [v20.6.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.6.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.5.1...v20.6.0 "diff with v20.5.1")
+*   2022-06-14 [`18f3d43`](https://github.com/nophead/NopSCADlib/commit/18f3d43780d7e083fc3b21290db2049fb4364a46 "show commit") [C.P.](# "Chris Palmer") Added convexity parameter to `clip()`.
+
+#### [v20.5.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.5.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.5.0...v20.5.1 "diff with v20.5.0")
+*   2022-06-14 [`eda88cc`](https://github.com/nophead/NopSCADlib/commit/eda88cc8d75eb4c0cb59b368b4e2ad3db2115834 "show commit") [C.P.](# "Chris Palmer") Fixed `vero()` constructor documentation.
+Fixed missing space in veroboard vitamin description.
+
+*   2022-06-14 [`630268d`](https://github.com/nophead/NopSCADlib/commit/630268d71a0b478c28b6bde2a7c3ff9074c7a8fb "show commit") [C.P.](# "Chris Palmer") Changed `screw_knob()` facets to be suitable for 3D printing.
+Fixed `knob_height()` so it can take a screw as a type.
+
+### [v20.5.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.5.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.4.0...v20.5.0 "diff with v20.4.0")
+*   2022-05-31 [`cc5654d`](https://github.com/nophead/NopSCADlib/commit/cc5654d7d756287f5311e35104003f38a4a94475 "show commit") [C.](# "Chris") Added `usb_miniA()`.
+
+### [v20.4.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.4.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.3.1...v20.4.0 "diff with v20.3.1")
+*   2022-04-01 [`d46913c`](https://github.com/nophead/NopSCADlib/commit/d46913ce4f64656889fd29dccc0709d84d4d9c49 "show commit") [C.P.](# "Chris Palmer") Printed `screw_knob()` is now fully customisable by passing a parameter
+list, constructed by `screw_knob(),` in place of the screw.
+
+ * Screws can still be passed for backwards compatibility.
+
+#### [v20.3.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.3.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.3.0...v20.3.1 "diff with v20.3.0")
+*   2022-04-01 [`b9f676a`](https://github.com/nophead/NopSCADlib/commit/b9f676a75369d666540f79abe0392e209e20d0f0 "show commit") [C.P.](# "Chris Palmer") Documented `insert_hole_length()`.
+
+### [v20.3.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.3.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.2.0...v20.3.0 "diff with v20.2.0")
+*   2022-03-17 [`ddc4150`](https://github.com/nophead/NopSCADlib/commit/ddc4150ed73c8300bc3ef4326a91cd4ec54ed9e3 "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2022-03-16 [`7e126c9`](https://github.com/nophead/NopSCADlib/commit/7e126c94cadd120d686eaad8459723e0c1dfc0b2 "show commit") [M.](# "Mozza") Add A23 cell
+
+### [v20.2.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.2.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.1.2...v20.2.0 "diff with v20.1.2")
+*   2022-03-17 [`744ebc2`](https://github.com/nophead/NopSCADlib/commit/744ebc293594e2d049220bba7325f3a22f40a71a "show commit") [C.P.](# "Chris Palmer") Added functions for generating twisted cable paths and calculating its radius.
+Top row of cable bundles reversed to match a twisted cable.
+
+#### [v20.1.2](https://github.com/nophead/NopSCADlib/releases/tag/v20.1.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.1.1...v20.1.2 "diff with v20.1.1")
+*   2022-03-17 [`99a5570`](https://github.com/nophead/NopSCADlib/commit/99a5570e248be32747bead61e17feaa3bde13f9b "show commit") [C.P.](# "Chris Palmer") Fixed ziptie bug for small wires and corners made sharper.
+
+*   2022-03-17 [`b70911d`](https://github.com/nophead/NopSCADlib/commit/b70911dc132727f24798e92be06a87ab37f2917e "show commit") [C.P.](# "Chris Palmer") Image odd pixel changes due to move to summer computer.
+
+*   2022-03-01 [`2d20fb1`](https://github.com/nophead/NopSCADlib/commit/2d20fb130a260b1f7358ea9fbb9fca2b5a18a65b "show commit") [C.P.](# "Chris Palmer") Removed dead code in `spiral_paths()`.
+
+#### [v20.1.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.1.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.1.0...v20.1.1 "diff with v20.1.0")
+*   2022-02-25 [`943deed`](https://github.com/nophead/NopSCADlib/commit/943deededfe2b258f23ca64001ae7c010ed626bc "show commit") [C.P.](# "Chris Palmer") Updated the readme.
+
+*   2022-02-24 [`c0d9067`](https://github.com/nophead/NopSCADlib/commit/c0d9067b740fc5ea4a41e696c88613a284685118 "show commit") [M.B.](# "Martin Budden") Fixed typos.
+
+*   2022-02-25 [`a30aff9`](https://github.com/nophead/NopSCADlib/commit/a30aff9613f51092bbad7052bfe1194a61557efc "show commit") [C.P.](# "Chris Palmer") Fixed missing brackets for sheets with chamfered corners.
+
+### [v20.1.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.1.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v20.0.1...v20.1.0 "diff with v20.0.1")
+*   2022-02-23 [`f173284`](https://github.com/nophead/NopSCADlib/commit/f173284709acdbd32de21f0d27cb3ab10b42eb2a "show commit") [C.P.](# "Chris Palmer") Can now inhibit exploded lines for issue [#220](https://github.com/nophead/NopSCADlib/issues/220 "show issue").
+
+#### [v20.0.1](https://github.com/nophead/NopSCADlib/releases/tag/v20.0.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v20.0.0...v20.0.1 "diff with v20.0.0")
+*   2022-02-23 [`0206b2e`](https://github.com/nophead/NopSCADlib/commit/0206b2e868119b3b5fdea6111839bf5055eae438 "show commit") [C.P.](# "Chris Palmer") Updated images.
+
+*   2022-02-03 [`1ac5a6f`](https://github.com/nophead/NopSCADlib/commit/1ac5a6f6cbe518646f19c4372a2393eb2e020a18 "show commit") [M.B.](# "Martin Budden") Made hard washers slightly lighter.
+This means they can be distinguished from bolts when viewed from directly
+above.
+
+## [v20.0.0](https://github.com/nophead/NopSCADlib/releases/tag/v20.0.0 "show release") Breaking Changes [...](https://github.com/nophead/NopSCADlib/compare/v19.21.0...v20.0.0 "diff with v19.21.0")
+*   2022-02-23 [`f8d17c6`](https://github.com/nophead/NopSCADlib/commit/f8d17c6f1615b9ff9b615ad2947c4b0119bf7597 "show commit") [C.P.](# "Chris Palmer") Updated readme.
+
+*   2022-02-22 [`662db2b`](https://github.com/nophead/NopSCADlib/commit/662db2bd4103dbeb4265c148d5f7e31c98d5dae2 "show commit") [M.B.](# "Martin Budden") Improved stepper motor naming convention.
+
+### [v19.21.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.21.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.20.0...v19.21.0 "diff with v19.20.0")
+*   2022-02-23 [`42fccc1`](https://github.com/nophead/NopSCADlib/commit/42fccc1afbf28ef6a94f0480d1306e5bc2e48e46 "show commit") [C.P.](# "Chris Palmer") Added `bezier_join()`.
+Moved `path_length()` from `sweep.scad` to `maths.scad`.
+
+### [v19.20.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.20.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.9.1...v19.20.0 "diff with v19.9.1")
+*   2022-02-15 [`0e2778e`](https://github.com/nophead/NopSCADlib/commit/0e2778e13de2e68fc21a7b4c706aada27a17842c "show commit") [C.P.](# "Chris Palmer") Cables can now have a list of wire colours.
+Added a constructor for cables.
+
+*   2022-02-15 [`50e23e5`](https://github.com/nophead/NopSCADlib/commit/50e23e5f818077e3661e25852dc959c34e6c8b4a "show commit") [C.P.](# "Chris Palmer") Added silkscreen text to PCBs.
+
+#### [v19.9.1](https://github.com/nophead/NopSCADlib/releases/tag/v19.9.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v19.9.0...v19.9.1 "diff with v19.9.0")
+*   2022-02-15 [`59eeb2c`](https://github.com/nophead/NopSCADlib/commit/59eeb2c5d4c7cf9da1f219c2b01fabcf450085f3 "show commit") [C.P.](# "Chris Palmer") Trimmed the ribbon clamp tape.
+
+*   2022-02-15 [`7ea4dbe`](https://github.com/nophead/NopSCADlib/commit/7ea4dbe6cbbc23256d23f7aea87e8aac8d1000a9 "show commit") [C.P.](# "Chris Palmer") Fixed double application of `r2sides()` in `rounded_path()`.
+Added check for radius too big for corner in `rounded_path()`.
+Spiral paths can now have 0 twists.
+
+### [v19.9.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.9.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.8.1...v19.9.0 "diff with v19.8.1")
+*   2022-02-11 [`95b6771`](https://github.com/nophead/NopSCADlib/commit/95b6771811fd48af46b5c2d426c42c04cd8e5af3 "show commit") [C.P.](# "Chris Palmer") Added printed cable clips.
+
+*   2022-02-11 [`ed46cbb`](https://github.com/nophead/NopSCADlib/commit/ed46cbb1470587d4fa3ee4e0e8e0513c82693b1b "show commit") [C.P.](# "Chris Palmer") Fixed `cable_bundle()` bugs and added test.
+Added `cable_bundle_positions()`.
+Can now mark cables as ribbon to force a flat layout.
+
+#### [v19.8.1](https://github.com/nophead/NopSCADlib/releases/tag/v19.8.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v19.8.0...v19.8.1 "diff with v19.8.0")
+*   2022-02-09 [`2a2b7d8`](https://github.com/nophead/NopSCADlib/commit/2a2b7d8bd60f0ea8ad2c428593e7aea1dfa06e9c "show commit") [C.P.](# "Chris Palmer") Added a second example project.
+
+### [v19.8.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.8.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.7.0...v19.8.0 "diff with v19.7.0")
+*   2022-02-09 [`055b4e7`](https://github.com/nophead/NopSCADlib/commit/055b4e7102ffcc39dc376330636efa79739a6555 "show commit") [C.P.](# "Chris Palmer") Added SOT23 and SOT223 SMD packages.
+`smd_capacitors` can now have a value.
+Wire links can now have zero length to create a vertical wire.
+
+*   2022-02-09 [`00d6efc`](https://github.com/nophead/NopSCADlib/commit/00d6efc3154bbd5597a3336bc8bdaf550e42f56a "show commit") [C.P.](# "Chris Palmer") Added veroboard constructor.
+Documented `solder_meniscus` and made it parametric.
+
+### [v19.7.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.7.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.6.0...v19.7.0 "diff with v19.6.0")
+*   2022-02-08 [`1f55097`](https://github.com/nophead/NopSCADlib/commit/1f55097bdd3e4d0164a48dd7ebb3fc5370250ac4 "show commit") [C.P.](# "Chris Palmer") Support for twisted cables.
+Sweep now distbutes twists in proportion to segments lengths.
+Added  `spiral_paths(),` `segmented_path()` and `rounded_path_vertices()` functions.
+Added `show_path(path)` module.
+
+### [v19.6.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.6.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.5.1...v19.6.0 "diff with v19.5.1")
+*   2022-02-06 [`225ea9b`](https://github.com/nophead/NopSCADlib/commit/225ea9b45160195bdf316e7ffdb383a63f898d3c "show commit") [C.P.](# "Chris Palmer") Added `rounded_path()` function to `sweep.scad`.
+
+#### [v19.5.1](https://github.com/nophead/NopSCADlib/releases/tag/v19.5.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v19.5.0...v19.5.1 "diff with v19.5.0")
+*   2022-02-06 [`d341ce4`](https://github.com/nophead/NopSCADlib/commit/d341ce499e56972ff5267d3187387fe7df9d4130 "show commit") [C.P.](# "Chris Palmer") Added `render()` to `pocket_handle()`.
+
+*   2022-02-06 [`e7376e2`](https://github.com/nophead/NopSCADlib/commit/e7376e28c44355efa425b98aa0511ccdf0b63301 "show commit") [C.P.](# "Chris Palmer") Fixed corner block assembly names when overridden.
+
+*   2022-02-06 [`e238eaa`](https://github.com/nophead/NopSCADlib/commit/e238eaa473bac72136507d15c57f6156560d6cfe "show commit") [C.P.](# "Chris Palmer") Removed unused, undocumented function.
+
+### [v19.5.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.5.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.4.1...v19.5.0 "diff with v19.4.1")
+*   2022-02-01 [`04e94a8`](https://github.com/nophead/NopSCADlib/commit/04e94a859aa0d21f840c992b487a901f096790a4 "show commit") [C.P.](# "Chris Palmer") Added `earth_rot` parameter to `NEMA_screws()`.
+
+#### [v19.4.1](https://github.com/nophead/NopSCADlib/releases/tag/v19.4.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v19.4.0...v19.4.1 "diff with v19.4.0")
+*   2022-02-01 [`e696dc4`](https://github.com/nophead/NopSCADlib/commit/e696dc471845550eb94e1b648d8b109cc11a9bf1 "show commit") [C.P.](# "Chris Palmer") Fixed stupid bug in `euler()`.
+
+### [v19.4.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.4.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.3.0...v19.4.0 "diff with v19.3.0")
+*   2022-01-29 [`f33a067`](https://github.com/nophead/NopSCADlib/commit/f33a0675f5b9f6a5ebe1c4b9755e894d1e2b7994 "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2022-01-29 [`5223415`](https://github.com/nophead/NopSCADlib/commit/52234154294011d4cc312f9ff98716f484d20a41 "show commit") [C.P.](# "Chris Palmer") Ball bearing test now two rows.
+
+*   2022-01-28 [`f87f3f5`](https://github.com/nophead/NopSCADlib/commit/f87f3f51ee778ef7ca30319d1d6ff3f4013e8258 "show commit") [M.B.](# "Martin Budden") Added support for flanged bearings.
+Also added some new cartridge bearings.
+
+### [v19.3.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.3.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.2.0...v19.3.0 "diff with v19.2.0")
+*   2022-01-29 [`1ee80f4`](https://github.com/nophead/NopSCADlib/commit/1ee80f4a908ff9939d06186f3b22f54f726fc4d2 "show commit") [C.P.](# "Chris Palmer") Ribbon clamps can now be made to hold multiple ribbons.
+
+*   2022-01-29 [`4340884`](https://github.com/nophead/NopSCADlib/commit/43408843af2c9b0924d4f5c29ff96644b5f48295 "show commit") [C.P.](# "Chris Palmer") `Butt_box` now has a `thin_blocks` property to make it use `2screw_blocks` instead of fixing blocks along the edges.
+
+*   2022-01-29 [`c4ccc30`](https://github.com/nophead/NopSCADlib/commit/c4ccc30b35f9b96c8b891efbe424a31bab7e1904 "show commit") [C.P.](# "Chris Palmer") Added `2screw_blocks,` a two screw version of corner blocks.
+
+*   2022-01-29 [`20db11f`](https://github.com/nophead/NopSCADlib/commit/20db11f81eb713b255c41e3be7e5b9c0373646de "show commit") [C.P.](# "Chris Palmer") Box top bezels can now be modified by adding a child that gets subtracted.
+
+*   2022-01-29 [`d82db46`](https://github.com/nophead/NopSCADlib/commit/d82db46ea11d99c92cd845a05cc6f9fc069f9497 "show commit") [C.P.](# "Chris Palmer") Added missing description for terminals.
+
+*   2022-01-26 [`ac58524`](https://github.com/nophead/NopSCADlib/commit/ac58524b8553d09356ca78e830c5ef47d1c1f05b "show commit") [C.P.](# "Chris Palmer") `Butt_box` `star_washers()` property renamed `bbox_star_washers()`.
+
+*   2022-01-26 [`ef06aa4`](https://github.com/nophead/NopSCADlib/commit/ef06aa43875aad40b016fb2939f256e074699bcf "show commit") [C.P.](# "Chris Palmer") `Butt_box` size and volume echo changed to show `Butt_box`.
+
+### [v19.2.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.2.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.1.0...v19.2.0 "diff with v19.1.0")
+*   2022-01-25 [`d775a16`](https://github.com/nophead/NopSCADlib/commit/d775a16baa818e04d707e6759fe480bb88bf8b5f "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2022-01-25 [`682b8ca`](https://github.com/nophead/NopSCADlib/commit/682b8caf4172d51de1ec191051da6eb432e1b35e "show commit") [C.P.](# "Chris Palmer") Removed CB- prefix from PSU descriptions.
+
+*   2022-01-25 [`c915dd8`](https://github.com/nophead/NopSCADlib/commit/c915dd8c5cc3dbc365ccc18a7a2fc00374fdafbe "show commit") [C.P.](# "Chris Palmer") Made `butt_box` example smaller to make room for more PSUs.
+
+*   2022-01-23 [`6805638`](https://github.com/nophead/NopSCADlib/commit/680563808aeb129e63de660df09c0c2d53775a65 "show commit") [M.B.](# "Martin Budden") Added ability to add PCB to PSU.
+Also added two slimline LED PSUs with PCBs and terminals at both ends.
+
+### [v19.1.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.1.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.0.0...v19.1.0 "diff with v19.0.0")
+*   2022-01-25 [`127aab2`](https://github.com/nophead/NopSCADlib/commit/127aab2e7ab87ed801b9463d6437983646dacdb5 "show commit") [C.P.](# "Chris Palmer") Added test for terminals to get documentation.
+Updated images and readme.
+Note BigTreeTech Relay Module `v1.2` PCB added.
+
+*   2022-01-23 [`df3da13`](https://github.com/nophead/NopSCADlib/commit/df3da13d6b7c75f41aaf3e499815b51e39e06fea "show commit") [M.B.](# "Martin Budden") Added support for terminals on PCBs.
+
+## [v19.0.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.0.0 "show release") Breaking Changes [...](https://github.com/nophead/NopSCADlib/compare/v18.4.0...v19.0.0 "diff with v18.4.0")
+*   2022-01-23 [`d4e8dd8`](https://github.com/nophead/NopSCADlib/commit/d4e8dd831187ea87ab8618f52541f3e53c0c17f8 "show commit") [C.P.](# "Chris Palmer") `Wire_hole_radius()` now rounded up to half mm diameters to match metric drills.
+`mouse_grommet` STL name is now based on the diameter instead of the radius.
+Added `mouse_grommet_length(r)` and documented `mouse_grommet_offset(r)`.
+
+### [v18.4.0](https://github.com/nophead/NopSCADlib/releases/tag/v18.4.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v18.3.2...v18.4.0 "diff with v18.3.2")
+*   2022-01-23 [`1928ec6`](https://github.com/nophead/NopSCADlib/commit/1928ec6fb162d44ffa2a8b37cdc5a064040e043c "show commit") [C.P.](# "Chris Palmer") Box can now be named to allow more than one in a project.
+`box_hole_inset(type)` documented.
+
+#### [v18.3.2](https://github.com/nophead/NopSCADlib/releases/tag/v18.3.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v18.3.1...v18.3.2 "diff with v18.3.1")
+*   2022-01-23 [`f4b9ab9`](https://github.com/nophead/NopSCADlib/commit/f4b9ab961cea8364eaf6b75cd308b91978234ae8 "show commit") [C.P.](# "Chris Palmer") Fixed `blower_exit_offset()` for square blowers with 2 screws.
+
+#### [v18.3.1](https://github.com/nophead/NopSCADlib/releases/tag/v18.3.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v18.3.0...v18.3.1 "diff with v18.3.0")
+*   2022-01-10 [`317b485`](https://github.com/nophead/NopSCADlib/commit/317b485ee1c17ef8f8004014a54f1c6706201932 "show commit") [C.P.](# "Chris Palmer") Updated the image.
+
+*   2022-01-11 [`ccf2b8e`](https://github.com/nophead/NopSCADlib/commit/ccf2b8e21b0b3a4d8ab72ea5cdecb0cdfb542e47 "show commit") [G.G.](# "Giampiero Gabbiani") Reverted PERF74x51
+
+*   2022-01-08 [`99f277d`](https://github.com/nophead/NopSCADlib/commit/99f277de8d71f289d1a7340995d25309369e145c "show commit") [G.G.](# "Giampiero Gabbiani") Fixed offset calculations
+
+*   2022-01-07 [`fe1ab5d`](https://github.com/nophead/NopSCADlib/commit/fe1ab5d59a5a4746a383111d1d2a558385f820f6 "show commit") [G.G.](# "Giampiero Gabbiani") Fixed grid origin offsets
+
+### [v18.3.0](https://github.com/nophead/NopSCADlib/releases/tag/v18.3.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v18.2.0...v18.3.0 "diff with v18.2.0")
+*   2022-01-10 [`49c2607`](https://github.com/nophead/NopSCADlib/commit/49c26079fea1be8eb4a69d7468fb12df4595ec4c "show commit") [C.P.](# "Chris Palmer") Added `M3x6_hex_pillar`.
+
+*   2022-01-10 [`b5ee63b`](https://github.com/nophead/NopSCADlib/commit/b5ee63bfc40b9ee698d44f435e58cfbc49ec259c "show commit") [C.P.](# "Chris Palmer") Added more documentation for microswitches.
+
+*   2022-01-10 [`a5bc80c`](https://github.com/nophead/NopSCADlib/commit/a5bc80c0e865335cde29db9203438fe4bc659f43 "show commit") [C.P.](# "Chris Palmer") Added `D_plug_d()` function.
+
+*   2022-01-10 [`bf8014f`](https://github.com/nophead/NopSCADlib/commit/bf8014fba0ed630898037712d2fdc432d7966d97 "show commit") [C.P.](# "Chris Palmer") Added `tubing_ir()` function.
+
+### [v18.2.0](https://github.com/nophead/NopSCADlib/releases/tag/v18.2.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v18.1.0...v18.2.0 "diff with v18.1.0")
+*   2021-12-14 [`608f0b2`](https://github.com/nophead/NopSCADlib/commit/608f0b2db052b0c79597be39de5e89b9989e9270 "show commit") [C.P.](# "Chris Palmer") Simplified teardrop top length calculation.
+
+*   2021-12-11 [`8682d0a`](https://github.com/nophead/NopSCADlib/commit/8682d0a4705ed2d85213d85702b5b9b039906f48 "show commit") [M.B.](# "Martin Budden") Allow configuration of teardrop angle.
+
 ### [v18.1.0](https://github.com/nophead/NopSCADlib/releases/tag/v18.1.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v18.0.0...v18.1.0 "diff with v18.0.0")
 *   2021-12-14 [`abe1b1d`](https://github.com/nophead/NopSCADlib/commit/abe1b1db0157a86af14a68ec42bdaa3e079e73a3 "show commit") [C.P.](# "Chris Palmer") Updated readme.

@@ -109,7 +956,7 @@ veroboard track cuts made slightly bigger.

 *   2021-10-01 [`042d809`](https://github.com/nophead/NopSCADlib/commit/042d809ed056ba55c32f1d850b81dcf559fe9134 "show commit") [C.P.](# "Chris Palmer") Resistor and thermistor wires made more round.

-*   2021-10-01 [`3864839`](https://github.com/nophead/NopSCADlib/commit/3864839e521eb64189cba8453ea8835d6ffadd75 "show commit") [C.P.](# "Chris Palmer") Fixed encoder breakout descripion typo.
+*   2021-10-01 [`3864839`](https://github.com/nophead/NopSCADlib/commit/3864839e521eb64189cba8453ea8835d6ffadd75 "show commit") [C.P.](# "Chris Palmer") Fixed encoder breakout description typo.

 *   2021-10-01 [`2ba2c2c`](https://github.com/nophead/NopSCADlib/commit/2ba2c2c115d4ab6c2371c662a3e54d7c77aa7785 "show commit") [C.P.](# "Chris Palmer") Removed some unused dependencies.

@@ -128,9 +975,9 @@ Lead length removed from TO220 and TO247 vitamin string.
 Mainly text spacing changes.

 *   2021-09-27 [`9b5ec6a`](https://github.com/nophead/NopSCADlib/commit/9b5ec6af1aba313df6812a5313470ebb7e8fbdd7 "show commit") [C.P.](# "Chris Palmer") Fixed new `rounded_polygon` to work with last OpenSCAD release.
-Trainling commas in `let()`.
+Trailing commas in `let()`.

-*   2021-09-27 [`50958b0`](https://github.com/nophead/NopSCADlib/commit/50958b064d5a6d5ca3fd6525a8c3d3a2c5b20199 "show commit") [C.P.](# "Chris Palmer") Added `$show_plugs` to show crude reprentations of housings on `pin_headers` and Molex KK headers.
+*   2021-09-27 [`50958b0`](https://github.com/nophead/NopSCADlib/commit/50958b064d5a6d5ca3fd6525a8c3d3a2c5b20199 "show commit") [C.P.](# "Chris Palmer") Added `$show_plugs` to show crude representations of housings on `pin_headers` and Molex KK headers.

 *   2021-09-27 [`c37373c`](https://github.com/nophead/NopSCADlib/commit/c37373c920d3b438895ef535b0c06d0d00675609 "show commit") [C.P.](# "Chris Palmer") Added `TO247()` and `TO247_size()` to `component.scad`.

@@ -238,8 +1085,6 @@ Fixed `M6_cs_cap_screw` and `M4_grub_screw` socket sizes.
 #### [v15.21.1](https://github.com/nophead/NopSCADlib/releases/tag/v15.21.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.21.0...v15.21.1 "diff with v15.21.0")
 *   2021-08-09 [`be53547`](https://github.com/nophead/NopSCADlib/commit/be53547728834d8e786ad4cb5637c768320a3105 "show commit") [M.B.](# "Martin Budden") Fixed display of BLDC prop shaft when thread length `=` 0.

-*   2021-07-04 [`ba7d7d3`](https://github.com/nophead/NopSCADlib/commit/ba7d7d32adf554d163143c0ae1707565340bb35b "show commit") [C.P.](# "Chris Palmer") Updated chnagelog.
-
 ### [v15.21.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.21.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.20.0...v15.21.0 "diff with v15.20.0")
 *   2021-07-01 [`df35e14`](https://github.com/nophead/NopSCADlib/commit/df35e14fc71794c3826d6c99ce3cab93a4cfa5fe "show commit") [M.B.](# "Martin Budden") Improved handling of pcb plating colour.

@@ -473,7 +1318,7 @@ Changelog updated.

 *   2021-03-06 [`b83e567`](https://github.com/nophead/NopSCADlib/commit/b83e56713fbde2ac25e9750c369ae9cec4d67913 "show commit") [M.B.](# "Martin Budden") Reordered openscad command line parameters.

-*   2021-03-04 [`da4f9fb`](https://github.com/nophead/NopSCADlib/commit/da4f9fbdc31d2ceaa853c2fa0270e6961fde28b9 "show commit") [C.P.](# "Chris Palmer") Typo in `changlog.py` doc string.
+*   2021-03-04 [`da4f9fb`](https://github.com/nophead/NopSCADlib/commit/da4f9fbdc31d2ceaa853c2fa0270e6961fde28b9 "show commit") [C.P.](# "Chris Palmer") Typo in `changelog.py` doc string.

 *   2021-03-03 [`614e5f3`](https://github.com/nophead/NopSCADlib/commit/614e5f3a72db309a3dee996d7241317556883e8d "show commit") [C.P.](# "Chris Palmer") Issues in the changelog now link to to the issue.

@@ -656,7 +1501,7 @@ Smaller PCBs closer together to make space.
 *   2021-01-15 [`7f9122a`](https://github.com/nophead/NopSCADlib/commit/7f9122ae662ab0bd660e5c2f5ab6c507797030da "show commit") [C.P.](# "Chris Palmer") Added `--hardwarnings` to `openscad.py`

 ### [v10.33.0](https://github.com/nophead/NopSCADlib/releases/tag/v10.33.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v10.32.0...v10.33.0 "diff with v10.32.0")
-*   2021-01-15 [`93b260b`](https://github.com/nophead/NopSCADlib/commit/93b260b7b9a016e2afe1ab7df22f5c0c8c906708 "show commit") [C.P.](# "Chris Palmer") Added `screw_length()` to calculuate screw lengths includin washers, inserts and nuts.
+*   2021-01-15 [`93b260b`](https://github.com/nophead/NopSCADlib/commit/93b260b7b9a016e2afe1ab7df22f5c0c8c906708 "show commit") [C.P.](# "Chris Palmer") Added `screw_length()` to calculate screw lengths includin washers, inserts and nuts.

 ### [v10.32.0](https://github.com/nophead/NopSCADlib/releases/tag/v10.32.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v10.31.1...v10.32.0 "diff with v10.31.1")
 *   2021-01-13 [`8fea8f4`](https://github.com/nophead/NopSCADlib/commit/8fea8f437b4c4efe1aecf24cf8ddb6c8f006cad2 "show commit") [C.P.](# "Chris Palmer") Updated images and readme for green terminals.
@@ -792,7 +1637,7 @@ Updated pics and readme.
 *   2020-12-28 [`f6f4fcc`](https://github.com/nophead/NopSCADlib/commit/f6f4fcc7e84e40669446708e2352ea68c49b7961 "show commit") [M.B.](# "Martin Budden") Added `M5_cs_cap` screw

 #### [v10.21.1](https://github.com/nophead/NopSCADlib/releases/tag/v10.21.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v10.21.0...v10.21.1 "diff with v10.21.0")
-*   2020-12-28 [`ba586b3`](https://github.com/nophead/NopSCADlib/commit/ba586b368582db163af143ebb60afed270f77b1c "show commit") [C.P.](# "Chris Palmer") Example images update to match new contersink screws and teardrops.
+*   2020-12-28 [`ba586b3`](https://github.com/nophead/NopSCADlib/commit/ba586b368582db163af143ebb60afed270f77b1c "show commit") [C.P.](# "Chris Palmer") Example images update to match new countersink screws and teardrops.

 ### [v10.21.0](https://github.com/nophead/NopSCADlib/releases/tag/v10.21.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v10.20.1...v10.21.0 "diff with v10.20.1")
 *   2020-12-28 [`8d22940`](https://github.com/nophead/NopSCADlib/commit/8d22940506df525ac52ef6f8a00ea03661f3b682 "show commit") [C.P.](# "Chris Palmer") Project blurb can now be split with into sections with markdown horizontal rules
@@ -1014,7 +1859,7 @@ Updated images and readme.

 *   2020-11-13 [`0c9ae8d`](https://github.com/nophead/NopSCADlib/commit/0c9ae8d60c96d8c5b16adfce98081adc8e20b001 "show commit") [C.P.](# "Chris Palmer") PCBs now drawn before components so that transparent LEDs draw correctly.

-*   2020-11-12 [`9a0bad4`](https://github.com/nophead/NopSCADlib/commit/9a0bad4e61acbd0ae27ef5c2d324d88deb7ee672 "show commit") [C.P.](# "Chris Palmer") Made stepper motor encap paramatric.
+*   2020-11-12 [`9a0bad4`](https://github.com/nophead/NopSCADlib/commit/9a0bad4e61acbd0ae27ef5c2d324d88deb7ee672 "show commit") [C.P.](# "Chris Palmer") Made stepper motor encap parametric.
 Made connector position based on encap height and added PCB.

 *   2020-11-12 [`9004781`](https://github.com/nophead/NopSCADlib/commit/90047815b0189c628c96807785d0d93a4895d411 "show commit") [C.P.](# "Chris Palmer") Added JST PH connectors.
@@ -1070,7 +1915,7 @@ Reverted the jst header pin position change.

 *   2020-09-20 [`933fea6`](https://github.com/nophead/NopSCADlib/commit/933fea687c54d7d8ec48fe92aae12ffca0666789 "show commit") [C.P.](# "Chris Palmer") Removed debug code

-*   2020-09-19 [`a7803b1`](https://github.com/nophead/NopSCADlib/commit/a7803b1efbf92c5e27f3171d7e2a92634fa2d84f "show commit") [C.P.](# "Chris Palmer") Improved numerical accuarcy of catenary calculations.
+*   2020-09-19 [`a7803b1`](https://github.com/nophead/NopSCADlib/commit/a7803b1efbf92c5e27f3171d7e2a92634fa2d84f "show commit") [C.P.](# "Chris Palmer") Improved numerical accuracy of catenary calculations.

 ### [v9.7.0](https://github.com/nophead/NopSCADlib/releases/tag/v9.7.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v9.6.1...v9.7.0 "diff with v9.6.1")
 *   2020-09-19 [`1255e71`](https://github.com/nophead/NopSCADlib/commit/1255e712719ce66fd3b231e5c212ea69b0bb9f1c "show commit") [C.P.](# "Chris Palmer") Added catenary curves.
@@ -1143,7 +1988,7 @@ Reduced J-Head inset.
 Removed J-Head MK4.

 ### [v9.2.0](https://github.com/nophead/NopSCADlib/releases/tag/v9.2.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v9.1.1...v9.2.0 "diff with v9.1.1")
-*   2020-08-13 [`2419d50`](https://github.com/nophead/NopSCADlib/commit/2419d5064182d63634183a5762c995d0bdfacf0a "show commit") [C.P.](# "Chris Palmer") Added more PTFE tube sizes and amde them whiter.
+*   2020-08-13 [`2419d50`](https://github.com/nophead/NopSCADlib/commit/2419d5064182d63634183a5762c995d0bdfacf0a "show commit") [C.P.](# "Chris Palmer") Added more PTFE tube sizes and made them whiter.

 *   2020-08-13 [`02211c2`](https://github.com/nophead/NopSCADlib/commit/02211c20348ef4f134c0d3c734a5d922fe9a9a3c "show commit") [C.P.](# "Chris Palmer") Added `tubing_or()` and `center` option.

@@ -1678,7 +2523,7 @@ already included by other vitamins.

 *   2020-02-24 [`065ec0a`](https://github.com/nophead/NopSCADlib/commit/065ec0a430da6c62cbd6d06b3de822e8a6751425 "show commit") [C.P.](# "Chris Palmer") Corrected nut placement

-*   2020-02-24 [`e7eea05`](https://github.com/nophead/NopSCADlib/commit/e7eea0520c7e4bd20e505084d7c17a64a915ef75 "show commit") [C.P.](# "Chris Palmer") T nut thickness no longer includes the stem to simplyfy placement and screw
+*   2020-02-24 [`e7eea05`](https://github.com/nophead/NopSCADlib/commit/e7eea0520c7e4bd20e505084d7c17a64a915ef75 "show commit") [C.P.](# "Chris Palmer") T nut thickness no longer includes the stem to simplify placement and screw
 length calculations.

 *   2020-02-24 [`5cb994b`](https://github.com/nophead/NopSCADlib/commit/5cb994b58b204a9f59d17001e4061aa5f60328bc "show commit") [C.P.](# "Chris Palmer") Retabulated nut table
@@ -1898,7 +2743,7 @@ Both added to the insert test.

 *   2019-08-18 [`e35fb69`](https://github.com/nophead/NopSCADlib/commit/e35fb695a21a42216b7f5b58c12b6bc5d3a43eff "show commit") [C.P.](# "Chris Palmer") Ziptie width added to BOM description.

-*   2019-08-18 [`61bec65`](https://github.com/nophead/NopSCADlib/commit/61bec656d7d9328a6eb90ca003d5ae5888e5a18c "show commit") [C.P.](# "Chris Palmer") Fixed box header BOM descripion.
+*   2019-08-18 [`61bec65`](https://github.com/nophead/NopSCADlib/commit/61bec656d7d9328a6eb90ca003d5ae5888e5a18c "show commit") [C.P.](# "Chris Palmer") Fixed box header BOM description.

 *   2019-08-18 [`854adab`](https://github.com/nophead/NopSCADlib/commit/854adab6650e7617588e2da821cd91fa97657eaa "show commit") [C.P.](# "Chris Palmer") Fix for Python 2

--- a/docs/sliding_t_nut.png
+++ b/docs/sliding_t_nut.png
--- a/docs/sliding_t_nut_small.png
+++ b/docs/sliding_t_nut_small.png
--- a/docs/usage.md
+++ b/docs/usage.md
@@ -2,7 +2,7 @@

 ## Requirements
 1. OpenSCAD 2021.01 or later, download it from here: https://www.openscad.org/downloads.html
-1. Python 2.7+ or 3.6+ from https://www.python.org/downloads/
+1. Python 3.6+ from https://www.python.org/downloads/
 1. ImageMagick 7 www.imagemagick.org

 These are all cross platform tools so NopSCADlib should work on any platform that supports them, although it has currently only been tested on Win7.
@@ -28,7 +28,9 @@ by downloading https://github.com/nophead/NopSCADlib/archive/master.zip and unzi

 The `NopSCADlib/scripts` directory needs to be added to the executable search path, `PATH` on Windows and `path` on Linux and Mac.

-The installation can be tested by opening `NopSCADlib/libtest.scad` in the OpenSCAD GUI. It should render all the objects in the library in about 1 minute.
+Note that on Linux and OSX the full file name including the `.py` will be needed.
+
+The installation can be tested by opening `NopSCADlib/libtest.scad` in the OpenSCAD GUI. It should render all the objects in the library in about 2 minutes.

 Running `tests` from the command line will run all the tests in the `tests` directory and build the `readme.md` catalog for GitHub and render it to `readme.html`
 for local preview.
--- a/examples/EnviroPlus/assemblies/RPI_assembled.png
+++ b/examples/EnviroPlus/assemblies/RPI_assembled.png
--- a/examples/EnviroPlus/assemblies/RPI_assembled_tn.png
+++ b/examples/EnviroPlus/assemblies/RPI_assembled_tn.png
--- a/examples/EnviroPlus/assemblies/RPI_assembly.png
+++ b/examples/EnviroPlus/assemblies/RPI_assembly.png
--- a/examples/EnviroPlus/assemblies/RPI_assembly_tn.png
+++ b/examples/EnviroPlus/assemblies/RPI_assembly_tn.png
--- a/examples/EnviroPlus/assemblies/RPI_case_assembled.png
+++ b/examples/EnviroPlus/assemblies/RPI_case_assembled.png
--- a/examples/EnviroPlus/assemblies/RPI_case_assembled_tn.png
+++ b/examples/EnviroPlus/assemblies/RPI_case_assembled_tn.png
--- a/examples/EnviroPlus/assemblies/RPI_case_assembly.png
+++ b/examples/EnviroPlus/assemblies/RPI_case_assembly.png
--- a/examples/EnviroPlus/assemblies/RPI_case_assembly_tn.png
+++ b/examples/EnviroPlus/assemblies/RPI_case_assembly_tn.png
--- a/examples/EnviroPlus/assemblies/back_assembled.png
+++ b/examples/EnviroPlus/assemblies/back_assembled.png
--- a/examples/EnviroPlus/assemblies/back_assembled_tn.png
+++ b/examples/EnviroPlus/assemblies/back_assembled_tn.png
--- a/examples/EnviroPlus/assemblies/back_assembly.png
+++ b/examples/EnviroPlus/assemblies/back_assembly.png
--- a/examples/EnviroPlus/assemblies/back_assembly_tn.png
+++ b/examples/EnviroPlus/assemblies/back_assembly_tn.png
--- a/examples/EnviroPlus/assemblies/case_assembled.png
+++ b/examples/EnviroPlus/assemblies/case_assembled.png
--- a/examples/EnviroPlus/assemblies/case_assembled_tn.png
+++ b/examples/EnviroPlus/assemblies/case_assembled_tn.png
--- a/examples/EnviroPlus/assemblies/case_assembly.png
+++ b/examples/EnviroPlus/assemblies/case_assembly.png
--- a/examples/EnviroPlus/assemblies/case_assembly_tn.png
+++ b/examples/EnviroPlus/assemblies/case_assembly_tn.png
--- a/examples/EnviroPlus/assemblies/enviro_assembled.png
+++ b/examples/EnviroPlus/assemblies/enviro_assembled.png
--- a/examples/EnviroPlus/assemblies/enviro_assembled_tn.png
+++ b/examples/EnviroPlus/assemblies/enviro_assembled_tn.png
--- a/examples/EnviroPlus/assemblies/enviro_assembly.png
+++ b/examples/EnviroPlus/assemblies/enviro_assembly.png
--- a/examples/EnviroPlus/assemblies/enviro_assembly_tn.png
+++ b/examples/EnviroPlus/assemblies/enviro_assembly_tn.png
--- a/examples/EnviroPlus/assemblies/enviro_case_assembled.png
+++ b/examples/EnviroPlus/assemblies/enviro_case_assembled.png
--- a/examples/EnviroPlus/assemblies/enviro_case_assembled_tn.png
+++ b/examples/EnviroPlus/assemblies/enviro_case_assembled_tn.png
--- a/examples/EnviroPlus/assemblies/enviro_case_assembly.png
+++ b/examples/EnviroPlus/assemblies/enviro_case_assembly.png
--- a/examples/EnviroPlus/assemblies/enviro_case_assembly_tn.png
+++ b/examples/EnviroPlus/assemblies/enviro_case_assembly_tn.png
--- a/examples/EnviroPlus/assemblies/fan_controller_assembled.png
+++ b/examples/EnviroPlus/assemblies/fan_controller_assembled.png
--- a/examples/EnviroPlus/assemblies/fan_controller_assembled_tn.png
+++ b/examples/EnviroPlus/assemblies/fan_controller_assembled_tn.png
--- a/examples/EnviroPlus/assemblies/fan_controller_assembly.png
+++ b/examples/EnviroPlus/assemblies/fan_controller_assembly.png
--- a/examples/EnviroPlus/assemblies/fan_controller_assembly_tn.png
+++ b/examples/EnviroPlus/assemblies/fan_controller_assembly_tn.png
--- a/examples/EnviroPlus/assemblies/main_assembled.png
+++ b/examples/EnviroPlus/assemblies/main_assembled.png
--- a/examples/EnviroPlus/assemblies/main_assembled_tn.png
+++ b/examples/EnviroPlus/assemblies/main_assembled_tn.png
--- a/examples/EnviroPlus/assemblies/main_assembly.png
+++ b/examples/EnviroPlus/assemblies/main_assembly.png
--- a/examples/EnviroPlus/assemblies/main_assembly_tn.png
+++ b/examples/EnviroPlus/assemblies/main_assembly_tn.png
--- a/examples/EnviroPlus/bom/RPI_assembly.txt
+++ b/examples/EnviroPlus/bom/RPI_assembly.txt
@@ -0,0 +1,5 @@
+RPI_assembly:
+Vitamins:
+  1 Micro SD card
+  1 Raspberry Pi Zero
+  1 Pin header 20 x 2 right_angle
--- a/examples/EnviroPlus/bom/RPI_case_assembly.txt
+++ b/examples/EnviroPlus/bom/RPI_case_assembly.txt
@@ -0,0 +1,7 @@
+RPI_case_assembly:
+Vitamins:
+  2 Screw M2.5 pan x  6.4mm
+
+Assemblies:
+  1 RPI_assembly
+  1 enviro_case_assembly
--- a/examples/EnviroPlus/bom/back_assembly.txt
+++ b/examples/EnviroPlus/bom/back_assembly.txt
@@ -0,0 +1,8 @@
+back_assembly:
+Vitamins:
+  1 Fan 17mm x 8mm
+  1 PMS5003 particle detector
+
+Printed:
+  1 enviro_plus_case_base.stl
+  1 fan_duct.stl
--- a/examples/EnviroPlus/bom/bom.csv
+++ b/examples/EnviroPlus/bom/bom.csv
@@ -0,0 +1,21 @@
+'Micro SD card',  1
+'Fan 17mm x 8mm',  1
+'Heatfit insert M2 x 4mm',  4
+'Nut M2.5 x 2.2mm nyloc',  4
+'Enviro+',  1
+'Raspberry Pi Zero',  1
+'Pin header 20 x 2 right_angle',  1
+'PMS5003 particle detector',  1
+'Screw M2 cap x  6mm',  4
+'Screw M2.5 pan x  6.4mm',  2
+'Screw M2.5 pan x  8mm',  4
+'Screw M3 pan x  6mm',  3
+'SMD capacitor 1206 10uF',  1
+'SMD resistor 0805 3K3 0.125W',  1
+'SOT223 package FZT851',  1
+'Veroboard 6 holes x 6 strips',  1
+'Washer  M2 x 5mm x 0.3mm',  4
+'Washer  M2.5 x 5.9mm x 0.5mm',  4
+'Washer  M3 x 7mm x 0.5mm',  3
+'Wire link 0.8mm x 6.5mm',  3
+'Wire link 0.8mm x 0.4"',  1
--- a/examples/EnviroPlus/bom/bom.json
+++ b/examples/EnviroPlus/bom/bom.json
@@ -0,0 +1,194 @@
+[
+    {
+        "name": "back_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {},
+        "vitamins": {
+            "pms5003(): PMS5003 particle detector": {
+                "count": 1
+            },
+            "fan(fan17x8): Fan 17mm x 8mm": {
+                "count": 1
+            }
+        },
+        "printed": {
+            "fan_duct.stl": {
+                "count": 1,
+                "colour": "darkorange"
+            },
+            "enviro_plus_case_base.stl": {
+                "count": 1,
+                "colour": "grey"
+            }
+        },
+        "routed": {}
+    },
+    {
+        "name": "RPI_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {},
+        "vitamins": {
+            "pcb(RPI0): Raspberry Pi Zero": {
+                "count": 1
+            },
+            ": Micro SD card": {
+                "count": 1
+            },
+            "pin_header(2p54header, 20, 2, right_angle = true): Pin header 20 x 2 right_angle": {
+                "count": 1
+            }
+        },
+        "printed": {},
+        "routed": {}
+    },
+    {
+        "name": "fan_controller_assembly",
+        "big": true,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {},
+        "vitamins": {
+            "veroboard(fan_vb): Veroboard 6 holes x 6 strips": {
+                "count": 1
+            },
+            "wire_link(0.8, 10.16, tail = 2.5): Wire link 0.8mm x 0.4\"": {
+                "count": 1
+            },
+            "wire_link(0.8, 0, h = 4, tail = 2.5): Wire link 0.8mm x 6.5mm": {
+                "count": 3
+            },
+            "smd_resistor(RES0805, 3K3): SMD resistor 0805 3K3 0.125W": {
+                "count": 1
+            },
+            "smd_capacitor(CAP1206): SMD capacitor 1206 10uF": {
+                "count": 1
+            },
+            "smd_sot(SOT223): SOT223 package FZT851": {
+                "count": 1
+            }
+        },
+        "printed": {},
+        "routed": {}
+    },
+    {
+        "name": "enviro_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {
+            "fan_controller_assembly": 1
+        },
+        "vitamins": {
+            "pcb(EnviroPlus): Enviro+": {
+                "count": 1
+            }
+        },
+        "printed": {},
+        "routed": {}
+    },
+    {
+        "name": "case_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {},
+        "vitamins": {
+            "insert(F1BM2): Heatfit insert M2 x 4mm": {
+                "count": 4
+            },
+            "washer(M3_washer): Washer  M3 x 7mm x 0.5mm": {
+                "count": 3
+            },
+            "screw(M3_pan_screw, 6): Screw M3 pan x  6mm": {
+                "count": 3
+            }
+        },
+        "printed": {
+            "enviro_plus_case.stl": {
+                "count": 1,
+                "colour": "grey"
+            },
+            "bulkhead.stl": {
+                "count": 1,
+                "colour": "[0.862745, 0.0784314, 0.235294]"
+            },
+            "foot.stl": {
+                "count": 3,
+                "colour": "darkorange"
+            }
+        },
+        "routed": {}
+    },
+    {
+        "name": "enviro_case_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {
+            "case_assembly": 1,
+            "enviro_assembly": 1
+        },
+        "vitamins": {
+            "screw(M2p5_pan_screw, 8): Screw M2.5 pan x  8mm": {
+                "count": 4
+            },
+            "washer(M2p5_washer): Washer  M2.5 x 5.9mm x 0.5mm": {
+                "count": 4
+            },
+            "nut(M2p5_nut, nyloc = true): Nut M2.5 x 2.2mm nyloc": {
+                "count": 4
+            }
+        },
+        "printed": {},
+        "routed": {}
+    },
+    {
+        "name": "RPI_case_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {
+            "enviro_case_assembly": 1,
+            "RPI_assembly": 1
+        },
+        "vitamins": {
+            "screw(M2p5_pan_screw, 6.4): Screw M2.5 pan x  6.4mm": {
+                "count": 2
+            }
+        },
+        "printed": {},
+        "routed": {}
+    },
+    {
+        "name": "main_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {
+            "RPI_case_assembly": 1,
+            "back_assembly": 1
+        },
+        "vitamins": {
+            "washer(M2_washer): Washer  M2 x 5mm x 0.3mm": {
+                "count": 4
+            },
+            "screw(M2_cap_screw, 6): Screw M2 cap x  6mm": {
+                "count": 4
+            }
+        },
+        "printed": {},
+        "routed": {}
+    }
+]
--- a/examples/EnviroPlus/bom/bom.txt
+++ b/examples/EnviroPlus/bom/bom.txt
@@ -0,0 +1,53 @@
+Vitamins:
+                   F   
+                   a   
+                   n   
+                E      
+                n  c   
+                v  o   
+    R           i  n   
+    p           r  t   
+    i        E  o  r   
+             n     o   
+    c  B  C  v  c  l  M
+ R  a  a  a  i  a  l  a
+ p  s  c  s  r  s  e  i
+ i  e  k  e  o  e  r  n
+ 1|  |  |  |  |  |  |  |  1 Micro SD card
+  |  | 1|  |  |  |  |  |  1 Fan 17mm x 8mm
+  |  |  | 4|  |  |  |  |  4 Heatfit insert M2 x 4mm
+  |  |  |  |  | 4|  |  |  4 Nut M2.5 x 2.2mm nyloc
+  |  |  |  | 1|  |  |  |  1 Enviro+
+ 1|  |  |  |  |  |  |  |  1 Raspberry Pi Zero
+ 1|  |  |  |  |  |  |  |  1 Pin header 20 x 2 right_angle
+  |  | 1|  |  |  |  |  |  1 PMS5003 particle detector
+  |  |  |  |  |  |  | 4|  4 Screw M2 cap x  6mm
+  | 2|  |  |  |  |  |  |  2 Screw M2.5 pan x  6.4mm
+  |  |  |  |  | 4|  |  |  4 Screw M2.5 pan x  8mm
+  |  |  | 3|  |  |  |  |  3 Screw M3 pan x  6mm
+  |  |  |  |  |  | 1|  |  1 SMD capacitor 1206 10uF
+  |  |  |  |  |  | 1|  |  1 SMD resistor 0805 3K3 0.125W
+  |  |  |  |  |  | 1|  |  1 SOT223 package FZT851
+  |  |  |  |  |  | 1|  |  1 Veroboard 6 holes x 6 strips
+  |  |  |  |  |  |  | 4|  4 Washer  M2 x 5mm x 0.3mm
+  |  |  |  |  | 4|  |  |  4 Washer  M2.5 x 5.9mm x 0.5mm
+  |  |  | 3|  |  |  |  |  3 Washer  M3 x 7mm x 0.5mm
+  |  |  |  |  |  | 3|  |  3 Wire link 0.8mm x 6.5mm
+  |  |  |  |  |  | 1|  |  1 Wire link 0.8mm x 0.4"
+
+Printed:
+  |  |  | 1|  |  |  |  |  1 bulkhead.stl
+  |  |  | 1|  |  |  |  |  1 enviro_plus_case.stl
+  |  | 1|  |  |  |  |  |  1 enviro_plus_case_base.stl
+  |  | 1|  |  |  |  |  |  1 fan_duct.stl
+  |  |  | 3|  |  |  |  |  3 foot.stl
+
+Assemblies:
+  1 RPI_assembly
+  1 RPI_case_assembly
+  1 back_assembly
+  1 case_assembly
+  1 enviro_assembly
+  1 enviro_case_assembly
+  1 fan_controller_assembly
+  1 main_assembly
--- a/examples/EnviroPlus/bom/case_assembly.txt
+++ b/examples/EnviroPlus/bom/case_assembly.txt
@@ -0,0 +1,10 @@
+case_assembly:
+Vitamins:
+  4 Heatfit insert M2 x 4mm
+  3 Screw M3 pan x  6mm
+  3 Washer  M3 x 7mm x 0.5mm
+
+Printed:
+  1 bulkhead.stl
+  1 enviro_plus_case.stl
+  3 foot.stl
--- a/examples/EnviroPlus/bom/enviro_assembly.txt
+++ b/examples/EnviroPlus/bom/enviro_assembly.txt
@@ -0,0 +1,6 @@
+enviro_assembly:
+Vitamins:
+  1 Enviro+
+
+Assemblies:
+  1 fan_controller_assembly
--- a/examples/EnviroPlus/bom/enviro_case_assembly.txt
+++ b/examples/EnviroPlus/bom/enviro_case_assembly.txt
@@ -0,0 +1,9 @@
+enviro_case_assembly:
+Vitamins:
+  4 Nut M2.5 x 2.2mm nyloc
+  4 Screw M2.5 pan x  8mm
+  4 Washer  M2.5 x 5.9mm x 0.5mm
+
+Assemblies:
+  1 case_assembly
+  1 enviro_assembly
--- a/examples/EnviroPlus/bom/fan_controller_assembly.txt
+++ b/examples/EnviroPlus/bom/fan_controller_assembly.txt
@@ -0,0 +1,8 @@
+fan_controller_assembly:
+Vitamins:
+  1 SMD capacitor 1206 10uF
+  1 SMD resistor 0805 3K3 0.125W
+  1 SOT223 package FZT851
+  1 Veroboard 6 holes x 6 strips
+  3 Wire link 0.8mm x 6.5mm
+  1 Wire link 0.8mm x 0.4"
--- a/examples/EnviroPlus/bom/main_assembly.txt
+++ b/examples/EnviroPlus/bom/main_assembly.txt
@@ -0,0 +1,8 @@
+main_assembly:
+Vitamins:
+  4 Screw M2 cap x  6mm
+  4 Washer  M2 x 5mm x 0.3mm
+
+Assemblies:
+  1 RPI_case_assembly
+  1 back_assembly
--- a/examples/EnviroPlus/docs/cuts.jpg
+++ b/examples/EnviroPlus/docs/cuts.jpg
--- a/examples/EnviroPlus/docs/fan_connection.jpg
+++ b/examples/EnviroPlus/docs/fan_connection.jpg
--- a/examples/EnviroPlus/docs/fan_controller.jpg
+++ b/examples/EnviroPlus/docs/fan_controller.jpg
--- a/examples/EnviroPlus/docs/smt.jpg
+++ b/examples/EnviroPlus/docs/smt.jpg
--- a/examples/EnviroPlus/readme.md
+++ b/examples/EnviroPlus/readme.md
@@ -0,0 +1,298 @@
+<a name="TOP"></a>
+# EnviroPlus
+Environmental monitor using Enviro+ sensor board and a Raspberry Pi Zero.
+
+![Main Assembly](assemblies/main_assembled.png)
+
+<span></span>
+
+---
+## Table of Contents
+1. [Parts list](#Parts_list)
+1. [Back Assembly](#back_assembly)
+1. [RPI Assembly](#RPI_assembly)
+1. [Fan Controller Assembly](#fan_controller_assembly)
+1. [Enviro Assembly](#enviro_assembly)
+1. [Case Assembly](#case_assembly)
+1. [Enviro Case Assembly](#enviro_case_assembly)
+1. [RPI Case Assembly](#RPI_case_assembly)
+1. [Main Assembly](#main_assembly)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="Parts_list"></a>
+## Parts list
+| <span style="writing-mode: vertical-rl; text-orientation: mixed;">Back</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">RPI</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">Fan&nbsp;Controller</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">Enviro</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">Case</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">Enviro&nbsp;Case</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">RPI&nbsp;Case</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">Main</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">TOTALS</span> |  |
+|---:|---:|---:|---:|---:|---:|---:|---:|---:|:---|
+|  |  |  |  |  |  |  |  | | **Vitamins** |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Enviro+ |
+| &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Fan 17mm x 8mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp; Heatfit insert M2 x 4mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Micro SD card |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp; Nut M2.5 x 2.2mm nyloc |
+| &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; PMS5003 particle detector |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Pin header 20 x 2 right_angle |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Raspberry Pi Zero |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; SMD capacitor 1206 10uF |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; SMD resistor 0805 3K3 0.125W |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; SOT223 package FZT851 |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;4&nbsp; |  &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp; Screw M2 cap x  6mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp; Screw M2.5 pan x  6.4mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp; Screw M2.5 pan x  8mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp; Screw M3 pan x  6mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Veroboard 6 holes x 6 strips |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;4&nbsp; |  &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp; Washer  M2 x 5mm x 0.3mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp; Washer  M2.5 x 5.9mm x 0.5mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp; Washer  M3 x 7mm x 0.5mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Wire link 0.8mm x 0.4" |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp; Wire link 0.8mm x 6.5mm |
+| &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;8&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;10&nbsp; | &nbsp;&nbsp;12&nbsp; | &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp;8&nbsp; | &nbsp;&nbsp;46&nbsp; | &nbsp;&nbsp;Total vitamins count |
+|  |  |  |  |  |  |  |  | | **3D printed parts** |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;bulkhead.stl |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;enviro_plus_case.stl |
+| &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;enviro_plus_case_base.stl |
+| &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;fan_duct.stl |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;foot.stl |
+| &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;5&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;7&nbsp; | &nbsp;&nbsp;Total 3D printed parts count |
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="back_assembly"></a>
+## Back Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|1| Fan 17mm x 8mm|
+|1| PMS5003 particle detector|
+
+
+### 3D Printed parts
+
+| 1 x enviro_plus_case_base.stl | 1 x fan_duct.stl |
+|---|---|
+| ![enviro_plus_case_base.stl](stls/enviro_plus_case_base.png) | ![fan_duct.stl](stls/fan_duct.png) 
+
+
+
+### Assembly instructions
+![back_assembly](assemblies/back_assembly.png)
+
+1. Print the fan duct in flexible TPE with low infill.
+1. Slide the pms5003 into the printed receptacle with the fan to the outside. Secure with tape if it is loose.
+1. Slide the fan into the fan duct.
+1. Slide the fan duct into the printed recepacle.
+
+![back_assembled](assemblies/back_assembled.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="RPI_assembly"></a>
+## RPI Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|1| Micro SD card|
+|1| Pin header 20 x 2 right_angle|
+|1| Raspberry Pi Zero|
+
+
+### Assembly instructions
+![RPI_assembly](assemblies/RPI_assembly_tn.png)
+
+* Solder a right angle connector to the Raspberry Pi Zero.
+
+![RPI_assembled](assemblies/RPI_assembled_tn.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="fan_controller_assembly"></a>
+## Fan Controller Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|1| SMD capacitor 1206 10uF|
+|1| SMD resistor 0805 3K3 0.125W|
+|1| SOT223 package FZT851|
+|1| Veroboard 6 holes x 6 strips|
+|1| Wire link 0.8mm x 0.4"|
+|3| Wire link 0.8mm x 6.5mm|
+
+
+### Assembly instructions
+![fan_controller_assembly](assemblies/fan_controller_assembly.png)
+
+The fan controller is a single transistor wired as a Miller integrator that effectively multiplies the capacitor value by the gain of the transistor.
+It converts the PWM signal on GPI4 to a stead DC voltage so that the fan doesn't whine, or stutter.
+
+![Schematic](docs/fan_controller.jpg)
+
+***
+* Make two track cuts as shown, one wide and the other narrow.
+
+![TrackCuts](docs/cuts.jpg)
+
+1. Add the SMT compeonents and then the wire links.
+1. Add more solder around the transistor to act as a heatsink.
+
+![SMT](docs/smt.jpg)
+
+
+![fan_controller_assembled](assemblies/fan_controller_assembled.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="enviro_assembly"></a>
+## Enviro Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|1| Enviro+|
+
+
+### Sub-assemblies
+
+| 1 x fan_controller_assembly |
+|---|
+| ![fan_controller_assembled](assemblies/fan_controller_assembled_tn.png) 
+
+
+
+### Assembly instructions
+![enviro_assembly](assemblies/enviro_assembly.png)
+
+* Solder the fan_controller to the Enviro+ expansion connector at the 5V, GND and #4 pins.
+
+![enviro_assembled](assemblies/enviro_assembled.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="case_assembly"></a>
+## Case Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|4| Heatfit insert M2 x 4mm|
+|3| Screw M3 pan x  6mm|
+|3| Washer  M3 x 7mm x 0.5mm|
+
+
+### 3D Printed parts
+
+| 1 x bulkhead.stl | 1 x enviro_plus_case.stl | 3 x foot.stl |
+|---|---|---|
+| ![bulkhead.stl](stls/bulkhead.png) | ![enviro_plus_case.stl](stls/enviro_plus_case.png) | ![foot.stl](stls/foot.png) 
+
+
+
+### Assembly instructions
+![case_assembly](assemblies/case_assembly.png)
+
+1. Solvent weld or glue the bulkhead into the recess in the bottom of the case.
+1. Fit the heatfit inserts with a soldering iron with a conical bit heated to about 200&deg;C.
+1. Tap the three holes for the feet with an M3 tap.
+1. Screw on the three feet with M3 x 6mm pan screws and washers.
+
+![case_assembled](assemblies/case_assembled.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="enviro_case_assembly"></a>
+## Enviro Case Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|4| Nut M2.5 x 2.2mm nyloc|
+|4| Screw M2.5 pan x  8mm|
+|4| Washer  M2.5 x 5.9mm x 0.5mm|
+
+
+### Sub-assemblies
+
+| 1 x case_assembly | 1 x enviro_assembly |
+|---|---|
+| ![case_assembled](assemblies/case_assembled_tn.png) | ![enviro_assembled](assemblies/enviro_assembled_tn.png) 
+
+
+
+### Assembly instructions
+![enviro_case_assembly](assemblies/enviro_case_assembly.png)
+
+* Screw the Enviro+ PCB to the front of the case using M2.5 x 8mm pan screws with washer and nuts on the inside.
+
+![enviro_case_assembled](assemblies/enviro_case_assembled.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="RPI_case_assembly"></a>
+## RPI Case Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|2| Screw M2.5 pan x  6.4mm|
+
+
+### Sub-assemblies
+
+| 1 x RPI_assembly | 1 x enviro_case_assembly |
+|---|---|
+| ![RPI_assembled](assemblies/RPI_assembled_tn.png) | ![enviro_case_assembled](assemblies/enviro_case_assembled_tn.png) 
+
+
+
+### Assembly instructions
+![RPI_case_assembly](assemblies/RPI_case_assembly.png)
+
+* Plug the RPi into the Enviro+ socket and secure with two screws self tapped into the bosses in the case.
+
+![RPI_case_assembled](assemblies/RPI_case_assembled.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="main_assembly"></a>
+## Main Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|4| Screw M2 cap x  6mm|
+|4| Washer  M2 x 5mm x 0.3mm|
+
+
+### Sub-assemblies
+
+| 1 x RPI_case_assembly | 1 x back_assembly |
+|---|---|
+| ![RPI_case_assembled](assemblies/RPI_case_assembled_tn.png) | ![back_assembled](assemblies/back_assembled_tn.png) 
+
+
+
+### Assembly instructions
+![main_assembly](assemblies/main_assembly.png)
+
+* Solder the fan wires to the veroboard assembly
+
+![FanWires](docs/fan_connection.jpg)
+
+* Slide the back assembly into the case and secure with four M2 x 6mm cap screws and washers.
+
+![main_assembled](assemblies/main_assembled.png)
+
+<span></span>
+[Top](#TOP)
--- a/examples/EnviroPlus/scad/fan_controller.scad
+++ b/examples/EnviroPlus/scad/fan_controller.scad
@@ -0,0 +1,43 @@
+//
+//! Environmental monitor using Enviro+ sensor board and a Raspberry Pi Zero.
+//
+// GNU GPL v2
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// Top level model
+//
+include <NopSCADlib/core.scad>
+use <NopSCADlib/vitamins/veroboard.scad>
+include <NopSCADlib/vitamins/smds.scad>
+
+fan_vb = vero("fan_vb", "fan_controller", 6, 6, breaks = [[2, 1], [2 + eps, 5]],
+    components = [
+        [5, 3,    90, "link", inch(0.4), undef, undef, 2.5],
+        [0, 5,     0, "link", 0, 4, undef, 2.5],
+        [0, 1,     0, "link", 0, 4, undef, 2.5],
+        [0, 0,     0, "link", 0, 4, undef, 2.5],
+        [2, 5,     0, "-smd_res", RES0805, "3K3"],
+        [4, 4.5,  90, "-smd_cap", CAP1206, 1.2, "10uF"],
+        [2, 2.5, 180, "-smd_sot", SOT223, "FZT851"],
+    ]
+ );
+
+//! The fan controller is a single transistor wired as a Miller integrator that effectively multiplies the capacitor value by the gain of the transistor.
+//! It converts the PWM signal on GPI4 to a stead DC voltage so that the fan doesn't whine, or stutter.
+//!
+//! ![Schematic](docs/fan_controller.jpg)
+//!
+//! ***
+//! * Make two track cuts as shown, one wide and the other narrow.
+//!
+//! ![TrackCuts](docs/cuts.jpg)
+//!
+//! 1. Add the SMT compeonents and then the wire links.
+//! 1. Add more solder around the transistor to act as a heatsink.
+//!
+//! ![SMT](docs/smt.jpg)
+//!
+module fan_controller_assembly() rotate(90) vflip() veroboard_fastened_assembly(fan_vb, -vero_thickness(fan_vb) - 1.4, 0);
+
+fan_controller_assembly();
--- a/examples/EnviroPlus/scad/main.scad
+++ b/examples/EnviroPlus/scad/main.scad
@@ -0,0 +1,519 @@
+//
+//! Environmental monitor using Enviro+ sensor board and a Raspberry Pi Zero.
+//
+// GNU GPL v2
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// Top level model
+//
+$explode = 0; // [0, 1]
+assembly = "main"; // [main, back, RPI, case, enviro_case, RPI_case]
+
+/* [Hidden] */
+
+show_box = true;
+show_enviroplus = true;
+$pp1_colour = "grey";
+$extrusion_width = 0.5;
+
+include <NopSCADlib/core.scad>
+include <NopSCADlib/vitamins/pin_headers.scad>
+include <NopSCADlib/vitamins/pcbs.scad>
+include <NopSCADlib/vitamins/fans.scad>
+
+use <NopSCADlib/vitamins/insert.scad>
+use <NopSCADlib/vitamins/veroboard.scad>
+use <NopSCADlib/utils/round.scad>
+use <NopSCADlib/utils/pcb_utils.scad>
+use <NopSCADlib/printed/foot.scad>
+use <NopSCADlib/printed/printed_box.scad>
+use <fan_controller.scad>
+
+rpi = RPI0;
+pcb = EnviroPlus;
+fan = fan17x8;
+foot = Foot(d = 13, h = 5, t = 2, r = 1, screw = M3_pan_screw);
+module foot_stl() foot(foot);
+
+rpi_offset = [0, -pcb_width(pcb) / 2 + 0.5, pcb_width(rpi) / 2 + 8.6];
+rpi_holes = [0, 1];
+wall = 2;
+top_thickness = 2;
+base_thickness = 2;
+case_inner_rad = 8;
+
+width = pcb_length(pcb) + 9 + 10;
+pcb_x = -(width - pcb_length(pcb) - 9) / 2;
+depth = pcb_width(pcb) + 9;
+height = pcb_width(rpi) / 2 + rpi_offset.z + 9;
+bulkhead_outset = 2;
+bulkhead_inset = 0.5;
+bulkhead_t = 2;
+clearance = 0.1;
+pcb_screw = alternate_screw(hs_pan, pcb_screw(pcb));
+
+box = pbox(name = "enviro_plus_case", wall = wall, top_t = top_thickness, base_t = base_thickness, screw = M2_cap_screw, radius = case_inner_rad, ridges = [8, 1],
+    size = [width,  depth, height]);
+
+pms5003 = [50, 38, 21];
+pms5003_wall = 1;
+pms5003_pos = [width / 2 - pms5003.x / 2 - pms5003_wall - pbox_screw_inset(box) - insert_boss_radius(screw_insert(pbox_screw(box)), wall) - 0.5,
+               depth / 2 - pms5003.z / 2 - wall - 1,
+               height + top_thickness - pms5003.y / 2];
+
+
+fan_duct_t = 1.7;
+foam_t = 0;
+fan_pos = [pms5003_pos.x - pms5003.x / 2 - pms5003_wall - fan_width(fan) / 2 - fan_duct_t, 1 + foam_t, 12 + top_thickness + fan_depth(fan) / 2];
+fan_socket = 8;
+
+module fan_shape() {
+    w = fan_width(fan);
+    p = fan_hole_pitch(fan);
+    r = w / 2 - p;
+
+    rounded_square([w, w], r);
+}
+
+module fan_duct_stl() {
+    module frame(z, offset, y = -fan_pos.y)
+        translate([0, y, z])
+            linear_extrude(height = eps)
+                offset(offset)
+                    fan_shape();
+
+    z = height + top_thickness - fan_pos.z + fan_depth(fan) / 2 - fan_socket;
+
+    translate([0, -fan_pos.y, z])
+        linear_extrude(height = fan_socket)
+            difference() {
+                fan_shape();
+
+                round(1)
+                    offset(-fan_duct_t)
+                        fan_shape();
+            }
+
+    stl("fan_duct") union() {
+        difference() {
+            hull() {
+                frame(z, 0);
+
+                frame(fan_depth(fan), fan_duct_t + foam_t, 0);
+            }
+            hull() {
+                frame(z, -fan_duct_t);
+
+                frame(fan_depth(fan), foam_t -extrusion_width / 2, 0);
+            }
+        }
+
+        linear_extrude(height = fan_depth(fan))
+            difference() {
+                offset(fan_duct_t + foam_t)
+                    fan_shape();
+
+                offset(foam_t)
+                    fan_shape();
+            }
+    }
+}
+
+module pms5003() {
+    vitamin("pms5003(): PMS5003 particle detector");
+
+    w = pms5003.x;
+    d = pms5003.y;
+    h = pms5003.z;
+    t = 0.1;
+    color("silver")
+        difference() {
+            linear_extrude(height = h, center = true)
+                difference() {
+                    square([w, d], center = true);
+
+                    for(x = [-1, 1], y = [-1, 1])
+                        translate([x * w / 2, y * d / 2])
+                            square(2, center = true);
+                }
+            cube([w + 2 * eps, d + 2 * eps, t * 2], center = true);
+         }
+
+    color("black")
+        rounded_rectangle([w - 2 * t, d - 2 * t, h - 2 * t], r = 1, center = true);
+}
+
+module pcb_shape(offset)
+    rounded_square([pcb_length(pcb) + 2 * offset, pcb_width(pcb) + 2 * offset], pcb_radius(pcb) + offset);
+
+module gap() {
+    gap = pcb_component_position(pcb, "-chip");
+
+    translate([gap.x, -gap.y])
+        square([17.5, 20], center = true);
+}
+
+module rpi_holes()
+    for(i = rpi_holes) {
+        hole = pcb_coord(rpi, pcb_holes(rpi)[i]);
+        translate([hole.x, rpi_offset.y, -hole.y + rpi_offset.z + top_thickness])
+            rotate([90, 0, 0])
+                children();
+    }
+
+module feet_positions() {
+    clearance = 2;
+    foot_r = foot_diameter(foot) / 2;
+    x_inset = case_inner_rad + foot_r - pbox_ridges(box).y;
+    z_inset = foot_r + clearance;
+    h = height + base_thickness;
+
+    for(p = [[-1, -1], [1, -1], [0, 1]])
+        translate([p.x * (width / 2 - x_inset), depth / 2 + wall + pbox_ridges(box).y, top_thickness + h / 2 + p.y * (h / 2 - z_inset)])
+            rotate([90, 0, 0])
+                children();
+}
+
+module slots(h = 10, expand = 0) {
+    for(comp = [["uSD", 2, 11, 0.7], ["flat_flex", 1, 12, 0.5]]) {
+        p = pcb_component_position(rpi, comp[0]);
+        translate([sign(p.x) * (width / 2 + wall / 2 + pbox_ridges(box).y / 2), rpi_offset.y + pcb_thickness(rpi) + comp[3], top_thickness + rpi_offset.z - p.y])
+            rotate([90, 0, 90])
+                hull() {
+                    vertical_tearslot(r = comp[1] + expand, l = comp[2], h = h);
+
+                    if(expand)
+                         vertical_tearslot(r = comp[1] + expand + h / 2, l = comp[2], h = eps);
+                }
+     }
+}
+
+module box_internal_additions() {
+    translate([pcb_x, 0]) {
+        linear_extrude(height = top_thickness + bulkhead_t)
+            difference() {
+                pcb_shape(bulkhead_outset + wall + pbox_ridges(box).y + eps);
+
+                gap();
+
+                pcb_shape(bulkhead_outset + clearance);
+            }
+
+        rpi_holes()
+            hull() {
+                wall = 1.8;
+                r =  screw_radius(pcb_screw) + wall;
+                z = depth / 2 + rpi_offset.y + pbox_ridges(box).y + eps;
+                offset = max(r, z);
+                cylinder(r =r, h = z);
+
+                translate([0, -offset - r, z])
+                    cube(eps);
+            }
+    }
+    d = washer_diameter(screw_washer(foot_screw(foot))) + 1;
+    h = pbox_ridges(box).y;
+    feet_positions()
+        translate_z(wall - eps)
+            cylinder(d2 = d, d1 = d + 2 * h, h = h);
+
+    slots(wall + pbox_ridges(box).y + eps, 1);
+}
+
+module box_external_additions() {
+    amp = pbox_ridges(box).y + eps;
+    d = foot_diameter(foot) + 1;
+    feet_positions()
+        cylinder(d1 = d, d2 = d + 2 * amp, h = amp);
+
+    slots(wall + pbox_ridges(box).y + eps, 1);
+}
+
+
+module box_holes() {
+    translate([pcb_x, 0]) {
+        linear_extrude(height = top_thickness + eps)
+            pcb_shape(clearance);
+
+        rpi_holes()
+            teardrop_plus(r = screw_pilot_hole(pcb_screw), h = 7 - 1.6, center = false);
+    }
+    feet_positions()
+        teardrop(r = screw_pilot_hole(foot_screw(foot)), h = 10, center = true);
+
+    grills = 7;
+    bar = 1.6;
+    x = pcb_x + pcb_length(pcb) / 2 + 2 * wall +  pbox_ridges(box).y + 2 * eps;
+    w = width / 2 - x;
+    d = depth - case_inner_rad;
+    pitch = d / (grills - 1);
+    for(i = [0 : grills -1])
+        let(w = i == 0 || i == grills -1 ? w - 1 : w)
+            translate([x + w / 2, -d / 2 + i * pitch])
+                rounded_rectangle([w, pitch - bar, 10], 1);
+
+    slots();
+}
+
+module bulkhead_stl() {
+    holes = pcb_holes(pcb);
+    pitch = max([for(h = holes) pcb_coord(pcb, h).x]) - min([for(h = holes)  pcb_coord(pcb, h).x]);
+    boss_r = (pitch - 51.4) / 2;
+
+    stl("bulkhead")
+        linear_extrude(height = bulkhead_t)
+            difference() {
+                pcb_shape(bulkhead_outset);
+
+                gap();
+
+                difference() {
+                    pcb_shape(-bulkhead_inset);
+
+                    pcb_screw_positions(pcb)
+                        rotate($i * 90)
+                            hull() {
+                                circle(boss_r);
+
+                                translate([boss_r - eps, -boss_r])
+                                    square([eps, boss_r]);
+
+                                translate([-boss_r, boss_r - eps])
+                                    square([boss_r, eps]);
+
+                                translate([-boss_r, -boss_r])
+                                    square(eps);
+                            }
+                }
+
+                pcb_screw_positions(pcb)
+                    poly_circle(screw_clearance_radius(pcb_screw));
+            }
+}
+
+module enviro_plus_case_stl() {
+     pbox(box) {
+        box_internal_additions();
+        box_holes();
+        box_external_additions();
+     }
+}
+
+module base_additions() {
+    w = pms5003.x + clearance;
+    d = pms5003.z + clearance;
+    wall = pms5003_wall;
+
+    translate([pms5003_pos.x, -pms5003_pos.y])
+        linear_extrude(height = base_thickness + pms5003.y)
+            difference() {
+                square([w + 2 * wall, d + 2 * wall], center = true);
+                square([w, d], center = true);
+            }
+
+    translate([fan_pos.x, 0])
+        linear_extrude(height = top_thickness + fan_socket)
+            difference() {
+                offset(wall)
+                    fan_shape();
+
+                fan_shape();
+            }
+}
+
+module base_holes() {
+    for(i = [0 : 1]) {
+        p = pcb_component_position(rpi, "usb_uA", i);
+        translate([p.x + pcb_x, -rpi_offset.y - pcb_thickness(rpi) - 1.3])
+            rounded_rectangle([11,7, 100], 0.5, true);
+    }
+
+    translate([pms5003_pos.x, -pms5003_pos.y])
+        rounded_rectangle([pms5003.x - 2 ,pms5003.z - 2, 100], 2, true);
+
+    translate([fan_pos.x, 0])
+        linear_extrude(height = 2 * base_thickness + eps, center = true)
+            round(1)
+                offset(-fan_duct_t)
+                    fan_shape();
+}
+
+module enviro_plus_case_base_stl()
+    pbox_base(box) {
+        base_additions();
+        base_holes();
+    }
+
+//! * Solder a right angle connector to the Raspberry Pi Zero.
+module RPI_assembly()
+assembly("RPI") {
+    pcb(rpi);
+
+    pcb_grid(rpi, 9.5, 0.5, -0.6)
+        rotate(180)
+            explode(20)
+                pin_header(2p54header, 20, 2, right_angle = true);
+}
+
+//! 1. Solvent weld or glue the bulkhead into the recess in the bottom of the case.
+//! 1. Fit the heatfit inserts with a soldering iron with a conical bit heated to about 200&deg;C.
+//! 1. Tap the three holes for the feet with an M3 tap.
+//! 1. Screw on the three feet with M3 x 6mm pan screws and washers.
+module case_assembly() pose([ 29.60, 0.00, 158.00 ], exploded = true) pose([ 198.00, 0.00, 352.80 ], exploded = false)
+assembly("case") {
+    if(show_box)
+        stl_colour(pp1_colour) render() enviro_plus_case_stl();
+    else
+        render() difference() {
+            enviro_plus_case_stl();
+
+            translate_z(height / 2)
+                cube([100, 100, height - 20], center = true);
+        }
+
+    pbox_inserts(box);
+
+    translate([pcb_x, 0, top_thickness])
+        explode(20)
+            stl_colour(pp2_colour) render() bulkhead_stl();
+
+    feet_positions() {
+        foot_assembly(0, foot);
+
+        vflip()
+            explode(20, explode_children = true)
+                translate_z(foot_thickness(foot))
+                    screw_and_washer(foot_screw(foot), 6);
+    }
+
+}
+
+//! * Solder the fan_controller to the Enviro+ expansion connector at the 5V, GND and #4 pins.
+module enviro_assembly() hflip(exploded())
+assembly("enviro") {
+    if(show_enviroplus)
+        pcb(pcb);
+
+    pcb_grid(pcb, 5.5, 2.5, -pcb_thickness(pcb)) {
+        hflip()
+            explode(15)
+                fan_controller_assembly();
+    }
+    if(!exploded())
+        for(x = [8, 7, 3])
+            pcb_grid(pcb, x, 0, 0.05)
+                solder_meniscus(0.39, 1);
+}
+
+//! * Screw the Enviro+ PCB to the front of the case using M2.5 x 8mm pan screws with washer and nuts on the inside.
+module enviro_case_assembly() pose([ 231.40, 0.00, 1.20 ])
+assembly("enviro_case") {
+    case_assembly();
+
+    translate([pcb_x, 0, top_thickness])
+        vflip() explode(20, explode_children = true) {
+            t = pcb_thickness(pcb);
+            nut = screw_nut(pcb_screw);
+            washer = screw_washer(pcb_screw);
+
+            no_explode() enviro_assembly();
+
+            pcb_screw_positions(pcb) {
+                translate_z(t)
+                    screw(pcb_screw, screw_longer_than(t + bulkhead_t + nut_thickness(nut, true) + washer_thickness(washer)));
+
+                translate_z(-bulkhead_t)
+                    vflip()
+                        explode(20, explode_children = true)
+                            nut_and_washer(nut, true);
+            }
+        }
+}
+
+//! * Plug the RPi into the Enviro+ socket and secure with two screws self tapped into the bosses in the case.
+module RPI_case_assembly() pose([ 20.50, 0.00, 153.30 ])
+assembly("RPI_case") {
+    enviro_case_assembly();
+
+    translate([pcb_x, 0]) {
+        translate_z(top_thickness) {
+
+            translate(rpi_offset)
+                rotate([-90, 0, 0])
+                    RPI_assembly();
+        }
+        rpi_holes()
+            vflip()
+                translate_z(pcb_thickness(rpi))
+                    screw(pcb_screw, 6.4);
+    }
+}
+
+//! 1. Print the fan duct in flexible TPE with low infill.
+//! 1. Slide the pms5003 into the printed receptacle with the fan to the outside. Secure with tape if it is loose.
+//! 1. Slide the fan into the fan duct.
+//! 1. Slide the fan duct into the printed recepacle.
+module back_assembly() pose([ 228.60, 0.00, 24.30 ])
+assembly("back") {
+    translate(pms5003_pos)
+        explode(-50)
+            rotate([90, 0, 0])
+                pms5003();
+
+    explode(-20, explode_children = true)
+        translate(fan_pos) {
+            explode(-20)
+                fan(fan);
+
+            translate_z(-fan_depth(fan) / 2)
+                stl_colour(pp4_colour)
+                    render()
+                        fan_duct_stl();
+        }
+
+    translate_z(height + top_thickness + base_thickness + eps) vflip()
+        stl_colour(show_box ? pp1_colour : pp2_colour) render() enviro_plus_case_base_stl();
+}
+
+//! * Solder the fan wires to the veroboard assembly
+//!
+//! ![FanWires](docs/fan_connection.jpg)
+//!
+//! * Slide the back assembly into the case and secure with four M2 x 6mm cap screws and washers.
+module main_assembly() pose([170, 335, 0], exploded = false) pose([ 42.20, 0.00, 159.60 ], exploded = true)
+assembly("main") {
+    RPI_case_assembly();
+
+    explode(20, explode_children = true) {
+        pbox_base_screws(box);
+
+        back_assembly();
+    }
+}
+
+if($preview) {
+    if(assembly == "main")
+        main_assembly();
+    else if(assembly == "case")
+        case_assembly();
+    else if(assembly == "back")
+        back_assembly();
+    else if(assembly == "RPI")
+        RPI_assembly();
+    else if(assembly == "RPI_case")
+        RPI_case_assembly();
+    else if(assembly == "enviro_case")
+        enviro_case_assembly();
+}
+else {
+    gap = 5;
+
+    enviro_plus_case_stl();
+
+    translate([0, -depth - gap])
+        enviro_plus_case_base_stl();
+
+    translate([0, -2 * (depth + gap)])
+        bulkhead_stl();
+}
--- a/examples/EnviroPlus/stls/bulkhead.png
+++ b/examples/EnviroPlus/stls/bulkhead.png
--- a/examples/EnviroPlus/stls/bulkhead.stl
+++ b/examples/EnviroPlus/stls/bulkhead.stl
--- a/examples/EnviroPlus/stls/enviro_plus_case.png
+++ b/examples/EnviroPlus/stls/enviro_plus_case.png
--- a/examples/EnviroPlus/stls/enviro_plus_case.stl
+++ b/examples/EnviroPlus/stls/enviro_plus_case.stl
--- a/examples/EnviroPlus/stls/enviro_plus_case_base.png
+++ b/examples/EnviroPlus/stls/enviro_plus_case_base.png
--- a/examples/EnviroPlus/stls/enviro_plus_case_base.stl
+++ b/examples/EnviroPlus/stls/enviro_plus_case_base.stl
--- a/examples/EnviroPlus/stls/fan_duct.png
+++ b/examples/EnviroPlus/stls/fan_duct.png
--- a/examples/EnviroPlus/stls/fan_duct.stl
+++ b/examples/EnviroPlus/stls/fan_duct.stl
--- a/examples/EnviroPlus/stls/foot.png
+++ b/examples/EnviroPlus/stls/foot.png
--- a/examples/EnviroPlus/stls/foot.stl
+++ b/examples/EnviroPlus/stls/foot.stl
--- a/examples/MainsBreakOutBox/assemblies/feet_assembled.png
+++ b/examples/MainsBreakOutBox/assemblies/feet_assembled.png
--- a/examples/MainsBreakOutBox/assemblies/feet_assembled_tn.png
+++ b/examples/MainsBreakOutBox/assemblies/feet_assembled_tn.png
--- a/examples/MainsBreakOutBox/assemblies/feet_assembly.png
+++ b/examples/MainsBreakOutBox/assemblies/feet_assembly.png
--- a/examples/MainsBreakOutBox/assemblies/feet_assembly_tn.png
+++ b/examples/MainsBreakOutBox/assemblies/feet_assembly_tn.png
--- a/examples/MainsBreakOutBox/assemblies/main_assembled.png
+++ b/examples/MainsBreakOutBox/assemblies/main_assembled.png
--- a/examples/MainsBreakOutBox/assemblies/main_assembled_tn.png
+++ b/examples/MainsBreakOutBox/assemblies/main_assembled_tn.png
--- a/examples/MainsBreakOutBox/assemblies/main_assembly.png
+++ b/examples/MainsBreakOutBox/assemblies/main_assembly.png
--- a/examples/MainsBreakOutBox/assemblies/main_assembly_tn.png
+++ b/examples/MainsBreakOutBox/assemblies/main_assembly_tn.png
--- a/examples/MainsBreakOutBox/assemblies/mains_in_assembled.png
+++ b/examples/MainsBreakOutBox/assemblies/mains_in_assembled.png
--- a/examples/MainsBreakOutBox/assemblies/mains_in_assembled_tn.png
+++ b/examples/MainsBreakOutBox/assemblies/mains_in_assembled_tn.png
--- a/examples/MainsBreakOutBox/assemblies/mains_in_assembly.png
+++ b/examples/MainsBreakOutBox/assemblies/mains_in_assembly.png
--- a/examples/MainsBreakOutBox/assemblies/mains_in_assembly_tn.png
+++ b/examples/MainsBreakOutBox/assemblies/mains_in_assembly_tn.png
--- a/examples/MainsBreakOutBox/bom/base_assembly.txt
+++ b/examples/MainsBreakOutBox/bom/base_assembly.txt
@@ -1,6 +1,6 @@
 base_assembly:
 Vitamins:
-  2 Heatfit insert M3
+  2 Heatfit insert M3 x 5.8mm

 Printed:
  1 socket_box.stl
--- a/examples/MainsBreakOutBox/bom/bom.csv
+++ b/examples/MainsBreakOutBox/bom/bom.csv
@@ -3,7 +3,7 @@
 'Wire brown 30/0.25mm strands, length 150mm - not shown',  2
 'Wire green & yellow 30/0.25mm strands, length 150mm - not shown',  2
 'IEC inlet for ATX',  1
-'Heatfit insert M3',  2
+'Heatfit insert M3 x 5.8mm',  2
 '4mm shielded jack socket blue',  2
 '4mm shielded jack socket brown',  1
 '4mm shielded jack socket green',  2
--- a/examples/MainsBreakOutBox/bom/bom.json
+++ b/examples/MainsBreakOutBox/bom/bom.json
@@ -7,7 +7,7 @@
        "count": 1,
        "assemblies": {},
        "vitamins": {
-            "insert(F1BM3): Heatfit insert M3": {
+            "insert(F1BM3): Heatfit insert M3 x 5.8mm": {
                "count": 2
            }
        },
--- a/examples/MainsBreakOutBox/bom/bom.txt
+++ b/examples/MainsBreakOutBox/bom/bom.txt
@@ -12,7 +12,7 @@ Vitamins:
  |  |  | 2|  2 Wire brown 30/0.25mm strands, length 150mm - not shown
  |  | 1| 1|  2 Wire green & yellow 30/0.25mm strands, length 150mm - not shown
  |  |  | 1|  1 IEC inlet for ATX
- 2|  |  |  |  2 Heatfit insert M3
+ 2|  |  |  |  2 Heatfit insert M3 x 5.8mm
  |  | 2|  |  2 4mm shielded jack socket blue
  |  | 1|  |  1 4mm shielded jack socket brown
  |  | 2|  |  2 4mm shielded jack socket green
--- a/examples/MainsBreakOutBox/readme.md
+++ b/examples/MainsBreakOutBox/readme.md
@@ -38,7 +38,7 @@ Earth leakage can be measured Canadian CSA style by disconnected the neutral lin
 | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; 4mm shielded jack socket brown |
 | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;2&nbsp; |  &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp; 4mm shielded jack socket green |
 | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;3&nbsp; |  &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp; Ferrule for 1.5mm^2 wire - not shown |
-| &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp; Heatfit insert M3 |
+| &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp; Heatfit insert M3 x 5.8mm |
 | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;5&nbsp; |  &nbsp;&nbsp;8&nbsp; | &nbsp;&nbsp; Heatshrink sleeving ID 3.2mm x 15mm - not shown |
 | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; IEC inlet for ATX |
 | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Mains socket 13A |
@@ -65,7 +65,7 @@ Earth leakage can be measured Canadian CSA style by disconnected the neutral lin
 ### Vitamins
 |Qty|Description|
 |---:|:----------|
-|2| Heatfit insert M3|
+|2| Heatfit insert M3 x 5.8mm|


 ### 3D Printed parts
--- a/examples/MainsBreakOutBox/stls/foot.png
+++ b/examples/MainsBreakOutBox/stls/foot.png
--- a/examples/MainsBreakOutBox/stls/foot.stl
+++ b/examples/MainsBreakOutBox/stls/foot.stl
--- a/examples/MainsBreakOutBox/stls/printed/all.stl
+++ b/examples/MainsBreakOutBox/stls/printed/all.stl
--- a/examples/MainsBreakOutBox/stls/socket_box.stl
+++ b/examples/MainsBreakOutBox/stls/socket_box.stl
--- a/examples/PT_camera/PT_camera.scad
+++ b/examples/PT_camera/PT_camera.scad
@@ -0,0 +1,54 @@
+include <../../vitamins/geared_steppers.scad>
+include <../../core.scad>
+include <../../vitamins/cameras.scad>
+use <../../vitamins/pcb.scad>
+
+module ptc(ang2) {
+  rotate([180,0,0])
+    union(){
+      geared_stepper(28BYJ_48,ang2);
+      rotate([90,0,180-ang2])
+        translate([9.8,-16.5,1.7])
+          rotate([0,0,90])
+            camera(cameras[0]);
+    }
+}
+
+module pt(ang,ang2) {
+  rotate([180,0,0]) geared_stepper(28BYJ_48,ang);
+  rotate([0,0,ang]) rotate([270,0,0]) translate([0,-29.0,-1.5]) ptc(ang2);
+}
+
+deg=90;
+c=90;
+
+if($t<0.125){
+  a=180+$t/0.125*deg;
+  pt(a,c);
+}else if ($t<0.25){
+  a=180+deg-($t-0.125)/0.125*deg;
+  pt(a,c);
+}else if ($t<0.375){
+  b=c+($t-0.25)/0.125*deg;
+  pt(180,b);
+}else if ($t<0.5){
+  b=c+deg-($t-0.375)/0.125*deg;
+  pt(180,b);
+}   
+else if($t<0.625){
+  a=180+($t-0.5)/0.125*deg;
+  b=c+deg-90+($t-0.5)/0.125*deg;
+  pt(a,b);
+}else if ($t<0.75){
+  a=180+deg-($t-0.625)/0.125*deg;
+  b=c+deg-($t-0.625)/0.125*deg;
+  pt(a,b);
+}else if ($t<0.875){
+  a=180-($t-0.75)/0.125*deg;
+  b=c-($t-0.75)/0.125*deg;
+  pt(a,b);
+}else{
+  a=90+($t-0.875)/0.125*deg;
+  b=c+deg-180+($t-0.875)/0.125*deg;
+  pt(a,b);
+}   
--- a/gallery/Blinder.png
+++ b/gallery/Blinder.png
--- a/gallery/ClockSetter.png
+++ b/gallery/ClockSetter.png
--- a/gallery/EnviroPlus.png
+++ b/gallery/EnviroPlus.png
--- a/gallery/HydraBot.png
+++ b/gallery/HydraBot.png
--- a/gallery/IOT_LOAD.png
+++ b/gallery/IOT_LOAD.png
--- a/gallery/LED_box.png
+++ b/gallery/LED_box.png
--- a/gallery/Laser_load.png
+++ b/gallery/Laser_load.png
--- a/gallery/MainsBreakOutBox.png
+++ b/gallery/MainsBreakOutBox.png
--- a/gallery/MultiSwitch.png
+++ b/gallery/MultiSwitch.png
--- a/gallery/MultiSwitch2.png
+++ b/gallery/MultiSwitch2.png
--- a/gallery/PSU_tube.png
+++ b/gallery/PSU_tube.png
--- a/gallery/PT_camera.anim.gif
+++ b/gallery/PT_camera.anim.gif
--- a/gallery/PotBox.png
+++ b/gallery/PotBox.png
--- a/Show More
+++ b/Show More