Box can now be named to allow more than one in a project.

box_hole_inset(type) documented.

CHANGELOG.md

@@ -3,6 +3,385 @@
 This changelog is generated by `changelog.py` using manually added semantic version tags to classify commits as breaking changes, additions or fixes.
 
 
+#### [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.
+
+*   2021-12-14 [`71f935d`](https://github.com/nophead/NopSCADlib/commit/71f935de8e24673a10707cfe434a2faaf3de1c28 "show commit") [M.B.](# "Martin Budden") Corrected FOV handling.
+
+*   2021-08-09 [`4138ed4`](https://github.com/nophead/NopSCADlib/commit/4138ed438e1111bafbe3bee17021a922966c334b "show commit") [M.B.](# "Martin Budden") Added ability to display camera field of view.
+
+## [v18.0.0](https://github.com/nophead/NopSCADlib/releases/tag/v18.0.0 "show release") Breaking Changes [...](https://github.com/nophead/NopSCADlib/compare/v17.10.0...v18.0.0 "diff with v17.10.0")
+*   2021-12-12 [`970c538`](https://github.com/nophead/NopSCADlib/commit/970c5384960bb4c436cb789a1c5869c0a4adfaa5 "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2021-12-12 [`cec790e`](https://github.com/nophead/NopSCADlib/commit/cec790ec09befd2631734cda88f3254043955638 "show commit") [M.B.](# "Martin Budden") Fixed y-carriage plain pulley and test.
+
+*   2021-11-27 [`e71db80`](https://github.com/nophead/NopSCADlib/commit/e71db80093e5131908dff4a6ecba02e5c213a7d8 "show commit") [M.B.](# "Martin Budden") Improvements to `core_xy`
+1. Better default parameters
+2. Changed `plain_idler_offset` to work in x and y, to facilitate larger idler pulleys
+
+### [v17.10.0](https://github.com/nophead/NopSCADlib/releases/tag/v17.10.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v17.9.0...v17.10.0 "diff with v17.9.0")
+*   2021-12-12 [`c31f58a`](https://github.com/nophead/NopSCADlib/commit/c31f58a4fdf5163dc56b98e89f1a98d08cdfded2 "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2021-11-27 [`a280e1f`](https://github.com/nophead/NopSCADlib/commit/a280e1fcbd6fe068a186e5c9f609cff62b2974a4 "show commit") [M.B.](# "Martin Budden") Added GT2x9 belt.
+
+### [v17.9.0](https://github.com/nophead/NopSCADlib/releases/tag/v17.9.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v17.8.0...v17.9.0 "diff with v17.8.0")
+*   2021-12-11 [`a2dfaef`](https://github.com/nophead/NopSCADlib/commit/a2dfaef2b51ffec3f048f0af569b39e8a7dbbeaf "show commit") [C.P.](# "Chris Palmer") Updated readme.
+
+*   2021-11-16 [`9790bdd`](https://github.com/nophead/NopSCADlib/commit/9790bdda11573904bf87c655d1ab7b81736a45e0 "show commit") [M.B.](# "Martin Budden") Added function returning number of links in drag chain.
+
+### [v17.8.0](https://github.com/nophead/NopSCADlib/releases/tag/v17.8.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v17.7.2...v17.8.0 "diff with v17.7.2")
+*   2021-12-11 [`c4895f8`](https://github.com/nophead/NopSCADlib/commit/c4895f84c7cff48baa14040c2759da15d2a165be "show commit") [C.P.](# "Chris Palmer") Updated image and readme.
+
+*   2021-11-20 [`b1ad206`](https://github.com/nophead/NopSCADlib/commit/b1ad206ce4d29b61f3a9be15adde7f1a51c225b5 "show commit") [M.B.](# "Martin Budden") Rotated conical horihole.
+
+*   2021-11-20 [`da55f86`](https://github.com/nophead/NopSCADlib/commit/da55f86536746657a1e105858109f177d24c362e "show commit") [M.B.](# "Martin Budden") Added variant of drag chain without supports.
+Unsupported drag chain has conical pin and corresponding horihole and is printed with cutout facing upwards.
+
+ * Also made clearance a property of the drag chain so it can be altered for printing chain assemblies
+
+*   2021-12-11 [`43c78fd`](https://github.com/nophead/NopSCADlib/commit/43c78fd1a38de87a210a64c3587bc994731b41c6 "show commit") [C.P.](# "Chris Palmer") Annual image changes due to change of computer.
+
+#### [v17.7.2](https://github.com/nophead/NopSCADlib/releases/tag/v17.7.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v17.7.1...v17.7.2 "diff with v17.7.1")
+*   2021-11-13 [`74e5698`](https://github.com/nophead/NopSCADlib/commit/74e569896bd9b4f98bcd7c84322cd358fee8941f "show commit") [C.P.](# "Chris Palmer") Updated images.
+
+*   2021-11-01 [`ed6f8cf`](https://github.com/nophead/NopSCADlib/commit/ed6f8cf5c0877f7e8ad9323cc4fd3a6983a11080 "show commit") [M.B.](# "Martin Budden") Added shading to base of screw sockets to increase visibility.
+
+#### [v17.7.1](https://github.com/nophead/NopSCADlib/releases/tag/v17.7.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v17.7.0...v17.7.1 "diff with v17.7.0")
+*   2021-10-29 [`9464ad5`](https://github.com/nophead/NopSCADlib/commit/9464ad5dbf1c6befaa0059e7cc3f0988d5639173 "show commit") [C.P.](# "Chris Palmer") Fixed knob for pots with split shaft.
+Changed the order of `knob_for_pot()` parameters.
+
+### [v17.7.0](https://github.com/nophead/NopSCADlib/releases/tag/v17.7.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v17.6.0...v17.7.0 "diff with v17.6.0")
+*   2021-10-28 [`b424bea`](https://github.com/nophead/NopSCADlib/commit/b424bea622d5247fd1e2f1ddd51782aba55277e1 "show commit") [C.P.](# "Chris Palmer") Added printed knobs for pots.
+
+*   2021-10-28 [`c8d9bb7`](https://github.com/nophead/NopSCADlib/commit/c8d9bb7d094408f70cb91354895856cb915cfe00 "show commit") [C.P.](# "Chris Palmer") Potentiometers now create a BOM entry and have a value specified.
+
+### [v17.6.0](https://github.com/nophead/NopSCADlib/releases/tag/v17.6.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v17.5.0...v17.6.0 "diff with v17.5.0")
+*   2021-10-26 [`f5528c5`](https://github.com/nophead/NopSCADlib/commit/f5528c5a9a51abdd12443a677236ac8610206c20 "show commit") [C.P.](# "Chris Palmer") Single `7_segment` objects can now have multiple digits.
+This is deduced from the digit size compared to the overall size.
+The decimal point is now suppressed if there are not enough pins.
+Added 02531A and 02352A 3 digit displays.
+
+*   2021-10-26 [`09bce09`](https://github.com/nophead/NopSCADlib/commit/09bce09a85fee3f3ac684743467329c18f4ebb73 "show commit") [C.P.](# "Chris Palmer") Typo
+
+### [v17.5.0](https://github.com/nophead/NopSCADlib/releases/tag/v17.5.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v17.4.0...v17.5.0 "diff with v17.4.0")
+*   2021-10-24 [`bad33da`](https://github.com/nophead/NopSCADlib/commit/bad33da95eb3b20ccbb6e4906dccfe51e8f4372c "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2021-10-21 [`427ef61`](https://github.com/nophead/NopSCADlib/commit/427ef610def6ef2744d565329069719e485a500e "show commit") [M.B.](# "Martin Budden") Allowed naming of magnets. Added radial encoder magnet.
+
+### [v17.4.0](https://github.com/nophead/NopSCADlib/releases/tag/v17.4.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v17.3.0...v17.4.0 "diff with v17.3.0")
+*   2021-10-24 [`f5d0bfb`](https://github.com/nophead/NopSCADlib/commit/f5d0bfb6c80111399f5fa2aeb8bab5bab9101285 "show commit") [C.P.](# "Chris Palmer") Fixed drill `center` parameter in `poly_drill()`.
+
+*   2021-10-24 [`b2117fa`](https://github.com/nophead/NopSCADlib/commit/b2117fa99a57341f9c93eed97c392c18173aa73c "show commit") [C.P.](# "Chris Palmer") `atx_psu_cutout(type)` now parametric and can be shown in the test.
+ATX300 PSU now has a correct cutout and more accurate grill holes.
+The four margins around grill holes can now be specified.
+
+*   2021-10-24 [`6687a4a`](https://github.com/nophead/NopSCADlib/commit/6687a4a7c62d526a5f376db903dcd74c4fb8a25c "show commit") [C.P.](# "Chris Palmer") Added `jack_4mm_flange_radius()`.
+
+*   2021-10-24 [`8524ddd`](https://github.com/nophead/NopSCADlib/commit/8524ddd34dd93d0bf5ddf538984809b8f0f8c986 "show commit") [C.P.](# "Chris Palmer") Foot now lowered by squeeze distance so the washer is visible.
+
+### [v17.3.0](https://github.com/nophead/NopSCADlib/releases/tag/v17.3.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v17.2.2...v17.3.0 "diff with v17.2.2")
+*   2021-10-20 [`21c0666`](https://github.com/nophead/NopSCADlib/commit/21c06667a3c5a0bc65440b990e28b8a2f93c7c32 "show commit") [C.P.](# "Chris Palmer") Added ATX300 PSU model.
+
+*   2021-10-20 [`d19fad3`](https://github.com/nophead/NopSCADlib/commit/d19fad3f9f7e6eba94b2005b4798b5914fff4b69 "show commit") [C.P.](# "Chris Palmer") PSU grills can now have different holes sizes, spacing, round or heaxagonal and avoid a list of rectangular regions.
+
+*   2021-10-20 [`172bfb1`](https://github.com/nophead/NopSCADlib/commit/172bfb16d8ec8ffee8b5185ef42867b37ab6bce1 "show commit") [C.P.](# "Chris Palmer") Added lugless pressfit IEC inlet.
+
+*   2021-10-09 [`491dbae`](https://github.com/nophead/NopSCADlib/commit/491dbae13b9ff2736324ff084c6a6f313b4a09fc "show commit") [C.P.](# "Chris Palmer") `screw_shorter_than()` will return 4 or 3 for short grub screws.
+
+#### [v17.2.2](https://github.com/nophead/NopSCADlib/releases/tag/v17.2.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v17.2.1...v17.2.2 "diff with v17.2.1")
+*   2021-10-02 [`046c475`](https://github.com/nophead/NopSCADlib/commit/046c475e1833c09a925a5310d1ccc6e4b07e7f89 "show commit") [M.B.](# "Martin Budden") Set convexity to 8 for `linear_extrude` of extrusion.
+
+#### [v17.2.1](https://github.com/nophead/NopSCADlib/releases/tag/v17.2.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v17.2.0...v17.2.1 "diff with v17.2.0")
+*   2021-10-06 [`5f72a12`](https://github.com/nophead/NopSCADlib/commit/5f72a1212514ee7f8a795b53b1d1d180329660df "show commit") [C.P.](# "Chris Palmer") Nuts shown on jacks and fuseholders only shown threaded when exploded.
+
+### [v17.2.0](https://github.com/nophead/NopSCADlib/releases/tag/v17.2.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v17.1.0...v17.2.0 "diff with v17.1.0")
+*   2021-10-06 [`82502eb`](https://github.com/nophead/NopSCADlib/commit/82502eb470127b28e4036821077cbdbd06c17e9e "show commit") [C.P.](# "Chris Palmer") Added `pot_nut()` module to draw potentiometer nuts and washers.
+
+### [v17.1.0](https://github.com/nophead/NopSCADlib/releases/tag/v17.1.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v17.0.1...v17.1.0 "diff with v17.0.1")
+*   2021-10-05 [`b541298`](https://github.com/nophead/NopSCADlib/commit/b541298eae361b80df3c6c5797f3940a37fc2a38 "show commit") [C.P.](# "Chris Palmer") Printed foot assembly can now omit the top washer when space is at a premium.
+Now correctly shows the screw in the squeezed position.
+
+*   2021-10-02 [`9884160`](https://github.com/nophead/NopSCADlib/commit/9884160ed5e8cd7d1f44c6fee950e3682714da9c "show commit") [C.P.](# "Chris Palmer") Updated the gallery
+
+#### [v17.0.1](https://github.com/nophead/NopSCADlib/releases/tag/v17.0.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v17.0.0...v17.0.1 "diff with v17.0.0")
+*   2021-10-01 [`38c973b`](https://github.com/nophead/NopSCADlib/commit/38c973b316a853fcbef3ccb857d99404a772d9dd "show commit") [C.P.](# "Chris Palmer") FR4 veroboard made the correct colour.
+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 [`2ba2c2c`](https://github.com/nophead/NopSCADlib/commit/2ba2c2c115d4ab6c2371c662a3e54d7c77aa7785 "show commit") [C.P.](# "Chris Palmer") Removed some unused dependencies.
+
+## [v17.0.0](https://github.com/nophead/NopSCADlib/releases/tag/v17.0.0 "show release") Breaking Changes [...](https://github.com/nophead/NopSCADlib/compare/v16.2.0...v17.0.0 "diff with v16.2.0")
+*   2021-09-28 [`a5c4bf0`](https://github.com/nophead/NopSCADlib/commit/a5c4bf05adbf53cb7eb113db1139b65eb616a2e0 "show commit") [M.B.](# "Martin Budden") Added hot end style string literals following discussion.
+
+*   2021-09-28 [`a65add6`](https://github.com/nophead/NopSCADlib/commit/a65add65acdfeb97a657e03b9398d5376f497e85 "show commit") [M.B.](# "Martin Budden") Removed hotend global enums.
+
+### [v16.2.0](https://github.com/nophead/NopSCADlib/releases/tag/v16.2.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v16.1.0...v16.2.0 "diff with v16.1.0")
+*   2021-09-29 [`bab4c8e`](https://github.com/nophead/NopSCADlib/commit/bab4c8e8afcc9e96ada5ae8d7636f3f203c36a2c "show commit") [C.P.](# "Chris Palmer") `TO247_size()` now also returns lead height and the length of the wide bit.
+TO247 leads fixed at 3.
+Lead length removed from TO220 and TO247 vitamin string.
+
+### [v16.1.0](https://github.com/nophead/NopSCADlib/releases/tag/v16.1.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v16.0.3...v16.1.0 "diff with v16.0.3")
+*   2021-09-27 [`f16f7dd`](https://github.com/nophead/NopSCADlib/commit/f16f7ddb0943469a4e9aeb2aec9e6fc9e418c2dc "show commit") [C.P.](# "Chris Palmer") Images reverted to last OpenSCAD release versions.
+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()`.
+
+*   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 [`c37373c`](https://github.com/nophead/NopSCADlib/commit/c37373c920d3b438895ef535b0c06d0d00675609 "show commit") [C.P.](# "Chris Palmer") Added `TO247()` and `TO247_size()` to `component.scad`.
+
+*   2021-09-27 [`700f5a2`](https://github.com/nophead/NopSCADlib/commit/700f5a2205173e12fad42df2f57d2c105608204e "show commit") [C.P.](# "Chris Palmer") `fanguard()` can now be made without screw holes to get just the grill.
+
+*   2021-09-27 [`4993c3e`](https://github.com/nophead/NopSCADlib/commit/4993c3e82deffd933a81e39b670bb14886790b5f "show commit") [C.P.](# "Chris Palmer") Module blurb parenthesis parsing is now greedy to handle args that default to function calls.
+This means that library modules cannot be one liners.
+
+*   2021-09-26 [`c6b280f`](https://github.com/nophead/NopSCADlib/commit/c6b280f0e8d6780394bf63fc7efa9c1075589abe "show commit") [C.P.](# "Chris Palmer") `_box_assembly()` fix for corners `=` 0.
+
+*   2021-09-26 [`6012787`](https://github.com/nophead/NopSCADlib/commit/601278778147c66288049b768be291c714fde6e0 "show commit") [C.P.](# "Chris Palmer") Added `jack_4mm_plastic()`.
+
+*   2021-09-26 [`30db660`](https://github.com/nophead/NopSCADlib/commit/30db66034c7fedf0f07b542908a07f73efd9dc08 "show commit") [C.P.](# "Chris Palmer") `Rounded_polygons` are now generated by a function returning a point list.
+The module version simply passes this to polygon.
+The arcs now sections of a `circle4n()` rather than a `circle()`.
+
+#### [v16.0.3](https://github.com/nophead/NopSCADlib/releases/tag/v16.0.3 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v16.0.2...v16.0.3 "diff with v16.0.2")
+*   2021-09-16 [`f6aa3b3`](https://github.com/nophead/NopSCADlib/commit/f6aa3b342650062cd8947aa36e2ae93242752d4b "show commit") [C.P.](# "Chris Palmer") `fuseholder_hole()` now makes a `poly_hole` when `cnc_bit_r` is 0.
+
+*   2021-09-16 [`91c8c7b`](https://github.com/nophead/NopSCADlib/commit/91c8c7bf4d67cf93c47f41cd5984cb23271205cb "show commit") [C.P.](# "Chris Palmer") `cnc_bit_r` is now set to zero in stl(), so holes are suitable for 3D printing rather than routing.
+
+*   2021-09-16 [`dc93b8d`](https://github.com/nophead/NopSCADlib/commit/dc93b8dcdf484dbb50cdee5908a91a3f322e6610 "show commit") [C.P.](# "Chris Palmer") Added platters and extrusion overrides to the example project.
+
+#### [v16.0.2](https://github.com/nophead/NopSCADlib/releases/tag/v16.0.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v16.0.1...v16.0.2 "diff with v16.0.1")
+*   2021-09-14 [`119c2cb`](https://github.com/nophead/NopSCADlib/commit/119c2cb6f46ea00c9238da6d98305e6479f0452c "show commit") [C.P.](# "Chris Palmer") Can now make perfboards with screws holes only at one end.
+`I.e`. for making models of chopped down boards.
+
+*   2021-09-14 [`24b3915`](https://github.com/nophead/NopSCADlib/commit/24b391578b1b68f1c65eb9c48458151a80ceaf5f "show commit") [C.P.](# "Chris Palmer") Fixed recently created bug trying to delete non-existent thumbnail diffs.
+
+#### [v16.0.1](https://github.com/nophead/NopSCADlib/releases/tag/v16.0.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v16.0.0...v16.0.1 "diff with v16.0.0")
+*   2021-09-12 [`f0c25d3`](https://github.com/nophead/NopSCADlib/commit/f0c25d37b0c19f76c3f3e0b4d9cabc7587f9efb5 "show commit") [C.P.](# "Chris Palmer") Workarounds for bugs in the OpenSCAD snapshots.
+
+## [v16.0.0](https://github.com/nophead/NopSCADlib/releases/tag/v16.0.0 "show release") Breaking Changes [...](https://github.com/nophead/NopSCADlib/compare/v15.25.0...v16.0.0 "diff with v15.25.0")
+*   2021-09-11 [`3299aad`](https://github.com/nophead/NopSCADlib/commit/3299aad5c83d1fe21d3bdddd1450f8de19078d13 "show commit") [C.P.](# "Chris Palmer") Parametric potentiometers added, changes PCB "potentiometer" parameters.
+The first one is now the type that defaults to the previous BigTreeTech version.
+The second parameter is the shaft length override.
+
+ * Added `ESP32_DOIT_V1,` ArduinoNano and `KY_040` breakout PCBs.
+
+*   2021-09-11 [`74c52aa`](https://github.com/nophead/NopSCADlib/commit/74c52aac0428995930b4af562a480025003b992d "show commit") [C.P.](# "Chris Palmer") Can now make perfboard without screw holes.
+Fixed missing items from last commit.
+
+*   2021-09-11 [`726d9ed`](https://github.com/nophead/NopSCADlib/commit/726d9ed2dc921b5a7ef8c5b0fa6b17628f706bf8 "show commit") [C.P.](# "Chris Palmer") Can now draw right angle Molex KK connectors and can skip pins to allow high voltage.
+
+*   2021-09-11 [`8a838dd`](https://github.com/nophead/NopSCADlib/commit/8a838dd1ceaac7d595aea47494cb28b9a424ee8a "show commit") [C.P.](# "Chris Palmer") Added `pcb_grid_components()` module for placing parts on a perfboard.
+
+*   2021-09-11 [`181c6ac`](https://github.com/nophead/NopSCADlib/commit/181c6ac6248e7db6204b6d461f122e719492b0cc "show commit") [C.P.](# "Chris Palmer") Added `vero_pin` PCB component.
+
+*   2021-09-11 [`e952aa7`](https://github.com/nophead/NopSCADlib/commit/e952aa7840cf4f3765c518a481d32f582bef27b4 "show commit") [C.P.](# "Chris Palmer") PCB chip component can now be round if width is zero to fake round buttons.
+
+*   2021-09-11 [`466ee31`](https://github.com/nophead/NopSCADlib/commit/466ee31e10e670ff35e22429084a34612f821f7d "show commit") [C.P.](# "Chris Palmer") Added `Jack_4mm_shielded_nut_radius()`.
+
+*   2021-09-11 [`4c926c5`](https://github.com/nophead/NopSCADlib/commit/4c926c529b199dbe589fb0c43f323db94ffe5597 "show commit") [C.P.](# "Chris Palmer") Fixed axial lead min pitch bug.
+
+*   2021-09-11 [`edb1ecc`](https://github.com/nophead/NopSCADlib/commit/edb1eccbf156ff4b06723b18f832637328b1c3e0 "show commit") [C.P.](# "Chris Palmer") TFT128x160 LCD display added.
+
+*   2021-09-11 [`061812c`](https://github.com/nophead/NopSCADlib/commit/061812cc8bc51e5a957d7d3acaffd9bcda14cc15 "show commit") [C.P.](# "Chris Palmer") PMMA1p25 sheet added.
+
+*   2021-09-11 [`ce0c97b`](https://github.com/nophead/NopSCADlib/commit/ce0c97b45e6e501554e66bcd4140d4dd3f532a1c "show commit") [C.P.](# "Chris Palmer") `7_segment` displays added as PCB component.
+
+### [v15.25.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.25.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.24.0...v15.25.0 "diff with v15.24.0")
+*   2021-09-05 [`2166a9b`](https://github.com/nophead/NopSCADlib/commit/2166a9be6a6fc75b06f0051971606cd181079e15 "show commit") [C.P.](# "Chris Palmer") `extrusion_corner_bracket_assembly()` and `extrusion_inner_corner_bracket()` can now be passed the extrusion type.
+E2020t and E4040t thinner extrusions added to work with the brackets.
+Extrusions can now have recessed channels, round or square centre sections and holes.
+Fixed the shape of extrusion centre section spars.
+T-nuts now have 45 degree chamfers instead of a fixed 1mm minimum thickness.
+
+*   2021-09-03 [`5117290`](https://github.com/nophead/NopSCADlib/commit/511729008dcc878a148c3bbd00edf69de9736fb5 "show commit") [C.P.](# "Chris Palmer") Added missing documentation for `sliding_t_nut()`.
+
+*   2021-09-03 [`5111ec0`](https://github.com/nophead/NopSCADlib/commit/5111ec04bc1d19cc46b811bf79d026fcd2ca70f8 "show commit") [C.P.](# "Chris Palmer") `E40_corner_bracket,` `E40_corner_bracket` and `M8_sliding_ball_t_nut` added.
+Inner corner brackets now show the long arm with chamfered ridges rather
+than a normal T-nut and the grub screws are inserted to meet the extrusion.
+
+### [v15.24.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.24.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.23.0...v15.24.0 "diff with v15.23.0")
+*   2021-08-31 [`d9af5b7`](https://github.com/nophead/NopSCADlib/commit/d9af5b7f705791ca8ef230ecd1b831c042587002 "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2021-08-31 [`9d65f69`](https://github.com/nophead/NopSCADlib/commit/9d65f69bf3e7cd325d24bc5410a4763bb7164b8f "show commit") [M.B.](# "Martin Budden") Added `M2p5_dome_screw`.
+
+### [v15.23.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.23.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.22.0...v15.23.0 "diff with v15.22.0")
+*   2021-08-31 [`00c5c90`](https://github.com/nophead/NopSCADlib/commit/00c5c90a5e74f47f0e6f5e3a7996f70fa34f0833 "show commit") [C.P.](# "Chris Palmer") Updated big picture
+
+*   2021-08-31 [`01c26d8`](https://github.com/nophead/NopSCADlib/commit/01c26d8a349e802738a8b0d06575a3e6915bf070 "show commit") [C.P.](# "Chris Palmer") Added Lichuan servo motors contributed by Niclas Hedhman.
+
+*   2021-08-31 [`ef21024`](https://github.com/nophead/NopSCADlib/commit/ef2102420b15e5be4008a6a3cecf5416857265f9 "show commit") [C.P.](# "Chris Palmer") Added NEMA8 and NEMA8BH stepper motors.
+Steppers can now have dual shafts, hollow shafts and black end caps.
+
+*   2021-08-31 [`540f841`](https://github.com/nophead/NopSCADlib/commit/540f84116355e7f44a9b5796816d1e3422128ff3 "show commit") [C.P.](# "Chris Palmer") Added crude representation of JST ZH connectors.
+
+*   2021-08-31 [`1045502`](https://github.com/nophead/NopSCADlib/commit/1045502efb1cb94fb7bcc11fd4483b425a880926 "show commit") [C.P.](# "Chris Palmer") Added more aluminium sheet thickness
+
+*   2021-08-31 [`485184f`](https://github.com/nophead/NopSCADlib/commit/485184f09213ff0b191d5c8339471cd24ba3cc90 "show commit") [C.P.](# "Chris Palmer") Added HGH15CA and HGH20CA rails.
+
+*   2021-08-31 [`b893c90`](https://github.com/nophead/NopSCADlib/commit/b893c9069a6bae762733cf1e139d49bab28ad792 "show commit") [C.P.](# "Chris Palmer") Added SFU1610 ballscrew nut
+
+*   2021-08-31 [`69f4ced`](https://github.com/nophead/NopSCADlib/commit/69f4ced29da7e37c88ca24b924c6430144eec849 "show commit") [C.P.](# "Chris Palmer") Added `M8_cs_cap_screw,` `M5_grub_screw` and `M6_grub_screw`.
+Fixed `M6_cs_cap_screw` and `M4_grub_screw` socket sizes.
+
+*   2021-08-31 [`5c1aa84`](https://github.com/nophead/NopSCADlib/commit/5c1aa849fe5992617c3128c47dfc969504cbfd2f "show commit") [C.P.](# "Chris Palmer") New layout for big picture.
+
+### [v15.22.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.22.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.21.1...v15.22.0 "diff with v15.21.1")
+*   2021-08-27 [`1247303`](https://github.com/nophead/NopSCADlib/commit/1247303cb9dc2694994993b5dc046683becb7fde "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2021-08-13 [`14ab1bb`](https://github.com/nophead/NopSCADlib/commit/14ab1bb8b614055e0bf4ad33799276b0017ca13e "show commit") [M.B.](# "Martin Budden") Added Raspberry Pi Pico.
+
+#### [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.
+
+### [v15.20.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.20.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.19.3...v15.20.0 "diff with v15.19.3")
+*   2021-06-29 [`c982876`](https://github.com/nophead/NopSCADlib/commit/c982876ebc0f95b466de1af3c80642dfd88800e6 "show commit") [C.P.](# "Chris Palmer") Can now specify the screw used for PSU shrouds and get the wall thickness.
+
+#### [v15.19.3](https://github.com/nophead/NopSCADlib/releases/tag/v15.19.3 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.19.2...v15.19.3 "diff with v15.19.2")
+*   2021-06-17 [`92d0444`](https://github.com/nophead/NopSCADlib/commit/92d0444e5f96c8f4768afb3d014044d7e66c6e69 "show commit") [C.P.](# "Chris Palmer") Changelog now runs codespell to fix the spellings in the commit comments.
+
+#### [v15.19.2](https://github.com/nophead/NopSCADlib/releases/tag/v15.19.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.19.1...v15.19.2 "diff with v15.19.1")
+*   2021-06-15 [`8d7c44b`](https://github.com/nophead/NopSCADlib/commit/8d7c44b80deffcc8c6b84c7a6485c959826cb381 "show commit") [M.B.](# "Martin Budden") Spelling corrections.
+
+#### [v15.19.1](https://github.com/nophead/NopSCADlib/releases/tag/v15.19.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.19.0...v15.19.1 "diff with v15.19.0")
+*   2021-06-17 [`d38055c`](https://github.com/nophead/NopSCADlib/commit/d38055c15c8b00f91f9c5a4749264acc9b123aad "show commit") [C.P.](# "Chris Palmer") Updated readme.
+
+*   2021-06-11 [`dcfe426`](https://github.com/nophead/NopSCADlib/commit/dcfe4262c519fb750702564309b790cda5b1c090 "show commit") [M.B.](# "Martin Budden") Fixed typos.
+
+### [v15.19.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.19.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.18.0...v15.19.0 "diff with v15.18.0")
+*   2021-06-17 [`c7a6d81`](https://github.com/nophead/NopSCADlib/commit/c7a6d8164f545e83c4d871080ac63b7d903829df "show commit") [C.P.](# "Chris Palmer") Added `molex_usb_Ax1()` and now shows SMT caps in the PCB test.
+
+### [v15.18.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.18.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.17.1...v15.18.0 "diff with v15.17.1")
+*   2021-06-08 [`d1a17bd`](https://github.com/nophead/NopSCADlib/commit/d1a17bd4ac90a7d3d6de7c4d4d032e8198c48647 "show commit") [C.P.](# "Chris Palmer") Added LIPO fuel gauge PCB.
+
+*   2021-06-08 [`b8efa11`](https://github.com/nophead/NopSCADlib/commit/b8efa11fd9504f4b837be663190d238c6227941e "show commit") [C.P.](# "Chris Palmer") Added SMD capacitors.
+
+*   2021-06-07 [`3bc8f35`](https://github.com/nophead/NopSCADlib/commit/3bc8f35e37741ef12d45951546059902b472b34a "show commit") [C.P.](# "Chris Palmer") Can now put `jst_ph` connectors on PCBs
+
+*   2021-06-07 [`39c11ef`](https://github.com/nophead/NopSCADlib/commit/39c11ef3b209256be393b3b211fef72c8ac793a1 "show commit") [C.P.](# "Chris Palmer") Added 2p54joiner to represent cropped headers joining PCBs.
+
+*   2021-06-07 [`5a8a1da`](https://github.com/nophead/NopSCADlib/commit/5a8a1da8801e3d799b7e322b397b236685552f97 "show commit") [C.P.](# "Chris Palmer") Added Seeeduino XIAO.
+Tiny PCBs now shown in a third line.
+
+*   2021-06-07 [`3147862`](https://github.com/nophead/NopSCADlib/commit/3147862212d6d1277a5e164909e4004e3e321f10 "show commit") [C.P.](# "Chris Palmer") PCB lands can be rounded and can specify colour.
+Holes can be positioned on the edge to make surface mountable connections.
+
+#### [v15.17.1](https://github.com/nophead/NopSCADlib/releases/tag/v15.17.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.17.0...v15.17.1 "diff with v15.17.0")
+*   2021-06-07 [`4fc8a7f`](https://github.com/nophead/NopSCADlib/commit/4fc8a7f47df9a880b8e02c9e0f1a3a63d9939c3e "show commit") [C.P.](# "Chris Palmer") Fixed z-fighting between transparent LEDs and PCB.
+
+### [v15.17.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.17.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.16.2...v15.17.0 "diff with v15.16.2")
+*   2021-06-06 [`a9ed994`](https://github.com/nophead/NopSCADlib/commit/a9ed9944c328d1fa5121ae10e4e0243bda45f001 "show commit") [C.P.](# "Chris Palmer") Added PERF70x51.
+
+*   2021-06-06 [`9cd2dbc`](https://github.com/nophead/NopSCADlib/commit/9cd2dbc3167c1d14ac1f72e5676f4154151b5638 "show commit") [C.P.](# "Chris Palmer") Added copper colour constant.
+Copper PCB pads and veroboard tracks now use copper colour.
+
+#### [v15.16.2](https://github.com/nophead/NopSCADlib/releases/tag/v15.16.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.16.1...v15.16.2 "diff with v15.16.1")
+*   2021-06-06 [`f3bfbbf`](https://github.com/nophead/NopSCADlib/commit/f3bfbbfcf21209fd993aa7ebc25c8d8d3c12fbd5 "show commit") [C.P.](# "Chris Palmer") Fixed Python error when top level assembly is empty.
+
+*   2021-06-06 [`baaa85f`](https://github.com/nophead/NopSCADlib/commit/baaa85ffedb1a7cdca42e01ca8f2e257438070fc "show commit") [C.P.](# "Chris Palmer") Updated readme.
+
+*   2021-06-06 [`f1a49d4`](https://github.com/nophead/NopSCADlib/commit/f1a49d4e28bf063950b113c64acaa918d470767f "show commit") [C.P.](# "Chris Palmer") Better description of `pcb_grid()`.
+
+#### [v15.16.1](https://github.com/nophead/NopSCADlib/releases/tag/v15.16.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.16.0...v15.16.1 "diff with v15.16.0")
+*   2021-06-04 [`9a4cc7e`](https://github.com/nophead/NopSCADlib/commit/9a4cc7ec42bf440e24ad3dacd88d7055736ae793 "show commit") [C.P.](# "Chris Palmer") Ziptie BOM entries no longer segregated by radius wrapped around.
+
+### [v15.16.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.16.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.15.0...v15.16.0 "diff with v15.15.0")
+*   2021-06-04 [`a782d43`](https://github.com/nophead/NopSCADlib/commit/a782d43e67f4091f44bd9018817e7263e2944477 "show commit") [C.P.](# "Chris Palmer") `bom.py` now generates `bom.csv` to allow costed BOMs to be made using a spreadsheet.
+
+### [v15.15.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.15.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.14.2...v15.15.0 "diff with v15.14.2")
+*   2021-06-03 [`823f3b9`](https://github.com/nophead/NopSCADlib/commit/823f3b936e6c33897445d3f3272b69237f013537 "show commit") [C.P.](# "Chris Palmer") Add the ability to have a target specific top level module in place of `main_assembly()`.
+
+#### [v15.14.2](https://github.com/nophead/NopSCADlib/releases/tag/v15.14.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.14.1...v15.14.2 "diff with v15.14.1")
+*   2021-06-02 [`749a1f0`](https://github.com/nophead/NopSCADlib/commit/749a1f0648196bd0ae47dbe93ac1b5e3a06d78cd "show commit") [C.P.](# "Chris Palmer") Fixed male thread z-fighting bug.
+
+*   2021-06-01 [`5c898df`](https://github.com/nophead/NopSCADlib/commit/5c898df2172a7e202c9e3d8c6641a0aaf95e5d48 "show commit") [C.P.](# "Chris Palmer") More readable code in `rounded_polygon`.
+
+#### [v15.14.1](https://github.com/nophead/NopSCADlib/releases/tag/v15.14.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.14.0...v15.14.1 "diff with v15.14.0")
+*   2021-06-01 [`20d799a`](https://github.com/nophead/NopSCADlib/commit/20d799a3c115d3d32f101c4419d6e9b57c3be8c7 "show commit") [C.P.](# "Chris Palmer") `IEC_320_C14_switched_fused_inlet` now shows the correct object name in the example.
+
+### [v15.14.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.14.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.13.4...v15.14.0 "diff with v15.13.4")
+*   2021-05-31 [`2581098`](https://github.com/nophead/NopSCADlib/commit/258109811b7b7f71895340dc4b86b96d7dbc2037 "show commit") [C.P.](# "Chris Palmer") Added uppercase version of `BLCD_motors.scad`.
+
+*   2021-05-31 [`b39fd53`](https://github.com/nophead/NopSCADlib/commit/b39fd536c2841a95ab50b8a196e21ee8fc5976d1 "show commit") [C.P.](# "Chris Palmer") Removed lower case version of `bldc_motors.scad`.
+
+*   2021-05-31 [`a5a87d2`](https://github.com/nophead/NopSCADlib/commit/a5a87d260dd4bbe40a8727a4099207271918d02b "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2021-05-30 [`00ca412`](https://github.com/nophead/NopSCADlib/commit/00ca412441c85ea1fd7082453c823445fbbdce4e "show commit") [M.B.](# "Martin Budden") Added BLDC3548 motor.
+
+*   2021-05-30 [`1e6d7f5`](https://github.com/nophead/NopSCADlib/commit/1e6d7f5dd68e64181aef019bb8bca186abb2ac68 "show commit") [M.B.](# "Martin Budden") Brushless DC motors.
+
+#### [v15.13.4](https://github.com/nophead/NopSCADlib/releases/tag/v15.13.4 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.13.3...v15.13.4 "diff with v15.13.3")
+*   2021-05-30 [`ec07d95`](https://github.com/nophead/NopSCADlib/commit/ec07d95657d52aab375b3b2acb95c87b369d2194 "show commit") [M.B.](# "Martin Budden") Added assertion to check colour format in module thread.
+
+#### [v15.13.3](https://github.com/nophead/NopSCADlib/releases/tag/v15.13.3 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.13.2...v15.13.3 "diff with v15.13.2")
+*   2021-05-19 [`0dab0dc`](https://github.com/nophead/NopSCADlib/commit/0dab0dca08485d1717ee516a61831fcd6963e335 "show commit") [C.P.](# "Chris Palmer") Added missing includes `core.scad` which generates warnings with latest OpenSCAD snapshots.
+
+ * Note, however, NopSCADlib does not work with the current OpenSCAD snapshot.
+
+#### [v15.13.2](https://github.com/nophead/NopSCADlib/releases/tag/v15.13.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.13.1...v15.13.2 "diff with v15.13.1")
+*   2021-05-15 [`9689683`](https://github.com/nophead/NopSCADlib/commit/9689683b7efbde882c057a903dd7fa018107d029 "show commit") [M.B.](# "Martin Budden") Typo in `global_defs`.
+
+#### [v15.13.1](https://github.com/nophead/NopSCADlib/releases/tag/v15.13.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.13.0...v15.13.1 "diff with v15.13.0")
+*   2021-05-18 [`11ebe22`](https://github.com/nophead/NopSCADlib/commit/11ebe2225db09bdd45089e4ebf5c1037243bf45c "show commit") [C.P.](# "Chris Palmer") Removed spurious convexity in difference from `rounded_polygon()`.
+
+### [v15.13.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.13.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.12.0...v15.13.0 "diff with v15.12.0")
+*   2021-05-02 [`3401919`](https://github.com/nophead/NopSCADlib/commit/34019196cdac6b08e57d773e138a22394b609ea5 "show commit") [C.P.](# "Chris Palmer") Updated readme
+
+*   2021-05-02 [`436fc71`](https://github.com/nophead/NopSCADlib/commit/436fc71cf319c1e71b6cbd240b76d7cad5ecd8ba "show commit") [M.B.](# "Martin Budden") Added `blower_size` function.
+
+### [v15.12.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.12.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.11.1...v15.12.0 "diff with v15.11.1")
+*   2021-04-26 [`e2feceb`](https://github.com/nophead/NopSCADlib/commit/e2feceb608b4491424c0e4c1e7c191f7d8aeceec "show commit") [C.P.](# "Chris Palmer") Updated readme
+
+*   2021-04-25 [`9c1a9bf`](https://github.com/nophead/NopSCADlib/commit/9c1a9bf3572c07a57b5bd1fde1d9a4aba14e5ea8 "show commit") [M.B.](# "Martin Budden") Add facility to orient `core_xy` with left motor being lower or upper motor.
+
+#### [v15.11.1](https://github.com/nophead/NopSCADlib/releases/tag/v15.11.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.11.0...v15.11.1 "diff with v15.11.0")
+*   2021-04-25 [`feec1e7`](https://github.com/nophead/NopSCADlib/commit/feec1e7ae5a5217586e0ab9e7b002e8af8f7c749 "show commit") [C.P.](# "Chris Palmer") Updated readme.
+
+*   2021-04-25 [`be76af2`](https://github.com/nophead/NopSCADlib/commit/be76af2fc490e10e4dd115a56019e33005f87db9 "show commit") [M.B.](# "Martin Budden") Fixed typo in `leadnut.scad`.
+
+### [v15.11.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.11.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.10.1...v15.11.0 "diff with v15.10.1")
+*   2021-04-25 [`49fdfea`](https://github.com/nophead/NopSCADlib/commit/49fdfea7926d677b6e0a9eee2fbd928f2935e1eb "show commit") [C.P.](# "Chris Palmer") Added 35BYGHJ75 geared stepper.
+
+#### [v15.10.1](https://github.com/nophead/NopSCADlib/releases/tag/v15.10.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v15.10.0...v15.10.1 "diff with v15.10.0")
+*   2021-04-25 [`ac0bacf`](https://github.com/nophead/NopSCADlib/commit/ac0bacfeda43af62256e7bd3184df695b3e01d37 "show commit") [C.P.](# "Chris Palmer") Removed echo in rails test.
+
+### [v15.10.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.10.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.9.0...v15.10.0 "diff with v15.9.0")
+*   2021-04-13 [`e379fa8`](https://github.com/nophead/NopSCADlib/commit/e379fa8ada4a4089fc24ce5fc2c140a2531e2e95 "show commit") [C.P.](# "Chris Palmer") Updated readme.
+
+*   2021-04-13 [`5fbff06`](https://github.com/nophead/NopSCADlib/commit/5fbff060b019a983eba93eb8c5b16adfb6a3f7ee "show commit") [M.B.](# "Martin Budden") Added a `pcb_component` function.
+
 ### [v15.9.0](https://github.com/nophead/NopSCADlib/releases/tag/v15.9.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v15.8.0...v15.9.0 "diff with v15.8.0")
 *   2021-04-13 [`edc0b86`](https://github.com/nophead/NopSCADlib/commit/edc0b86bb1cd52e90fe353c4aea9539e95aa5aee "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
 
@@ -85,7 +464,7 @@ Breaking change in `belt_length();` now requires a type argument
 
 ## [v14.0.0](https://github.com/nophead/NopSCADlib/releases/tag/v14.0.0 "show release") Breaking Changes [...](https://github.com/nophead/NopSCADlib/compare/v13.5.0...v14.0.0 "diff with v13.5.0")
 *   2021-03-06 [`298d1f9`](https://github.com/nophead/NopSCADlib/commit/298d1f92841f30e13b437c6770fc113954b94108 "show commit") [C.P.](# "Chris Palmer") Interface is the same but filenames to be included or used changed.
-Changlog upated.
+Changelog updated.
 
 *   2021-03-06 [`491c3b4`](https://github.com/nophead/NopSCADlib/commit/491c3b4ea8d2ef51e55fd389f0dc0b9a6b9bd9a4 "show commit") [C.P.](# "Chris Palmer") Updated readme, `lib.scad` and image.
 
@@ -121,7 +500,7 @@ Changlog upated.
 
 *   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.
 
-*   2021-03-03 [`a7eae4f`](https://github.com/nophead/NopSCADlib/commit/a7eae4f549b51dbe4624a8b67012919cef6cb24a "show commit") [C.P.](# "Chris Palmer") Neater changlog format.
+*   2021-03-03 [`a7eae4f`](https://github.com/nophead/NopSCADlib/commit/a7eae4f549b51dbe4624a8b67012919cef6cb24a "show commit") [C.P.](# "Chris Palmer") Neater changelog format.
 
 *   2021-03-03 [`31ab856`](https://github.com/nophead/NopSCADlib/commit/31ab8562a783464f93812b8c7c45d403587efd0a "show commit") [C.P.](# "Chris Palmer") Updated images
 
@@ -144,7 +523,7 @@ Changlog upated.
 *   2021-02-20 [`03a0c2f`](https://github.com/nophead/NopSCADlib/commit/03a0c2fe981ce12cda51a693f69b4fb19696cb8a "show commit") [C.P.](# "Chris Palmer") Fixed typo.
 
 ### [v13.3.0](https://github.com/nophead/NopSCADlib/releases/tag/v13.3.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v13.2.0...v13.3.0 "diff with v13.2.0")
-*   2021-02-20 [`7c2df8d`](https://github.com/nophead/NopSCADlib/commit/7c2df8d36d214a8bf8ebdcd39da293209bc175ab "show commit") [C.P.](# "Chris Palmer") The pose module can now specify the camera distance supressing viewall and
+*   2021-02-20 [`7c2df8d`](https://github.com/nophead/NopSCADlib/commit/7c2df8d36d214a8bf8ebdcd39da293209bc175ab "show commit") [C.P.](# "Chris Palmer") The pose module can now specify the camera distance suppressing viewall and
 autocentre.
 
 ### [v13.2.0](https://github.com/nophead/NopSCADlib/releases/tag/v13.2.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v13.1.0...v13.2.0 "diff with v13.1.0")
@@ -439,9 +818,9 @@ Updated pics and readme.
 *   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.
 
 ### [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 horizonal rules
+*   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
 made with asterisks.
-If an image is include in the first section the default image is supressed.
+If an image is include in the first section the default image is suppressed.
 
 #### [v10.20.1](https://github.com/nophead/NopSCADlib/releases/tag/v10.20.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v10.20.0...v10.20.1 "diff with v10.20.0")
 *   2020-12-26 [`87c8bbb`](https://github.com/nophead/NopSCADlib/commit/87c8bbb9a549aabb84004426332dc964583472c5 "show commit") [M.B.](# "Martin Budden") Fixed error in `carriage_size` function.
@@ -456,12 +835,12 @@ If an image is include in the first section the default image is supressed.
 
 ### [v10.20.0](https://github.com/nophead/NopSCADlib/releases/tag/v10.20.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v10.19.0...v10.20.0 "diff with v10.19.0")
 *   2020-12-24 [`6f8ff60`](https://github.com/nophead/NopSCADlib/commit/6f8ff606fa5b2ef7d81fb687b77bd6236f6d277f "show commit") [C.P.](# "Chris Palmer") Removed `woven_sheet()` from the readme.
-Removed redundent code.
+Removed redundant code.
 
 *   2020-12-24 [`acd5de0`](https://github.com/nophead/NopSCADlib/commit/acd5de0fbd513b67387478b4c89a5ef4f11b440b "show commit") [C.P.](# "Chris Palmer") Fixed extra BOM entries for woven sheet.
 Added render colour to BOM for 3D sheets.
 
-*   2020-12-23 [`cc1e3ba`](https://github.com/nophead/NopSCADlib/commit/cc1e3baaf6ba7451b3545efc949015af822dc95c "show commit") [C.P.](# "Chris Palmer") Reimplemeted woven sheets with an eye to speed and interface consistancy.
+*   2020-12-23 [`cc1e3ba`](https://github.com/nophead/NopSCADlib/commit/cc1e3baaf6ba7451b3545efc949015af822dc95c "show commit") [C.P.](# "Chris Palmer") Reimplemeted woven sheets with an eye to speed and interface consistency.
 
 *   2020-12-13 [`85cb54e`](https://github.com/nophead/NopSCADlib/commit/85cb54ef318597a4922077785247ddcb08d5e00d "show commit") [M.B.](# "Martin Budden") Added sheet with checkerboard texture to simulate carbon fiber.
 
@@ -926,7 +1305,7 @@ Done to reduced the number of global constants.
 `Panel_meters` can now have inner apertures and buttons.
 
 ### [v7.2.0](https://github.com/nophead/NopSCADlib/releases/tag/v7.2.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v7.1.1...v7.2.0 "diff with v7.1.1")
-*   2020-05-02 [`baa737c`](https://github.com/nophead/NopSCADlib/commit/baa737c4d83be0ab38685122ebe535872fe63e20 "show commit") [C.P.](# "Chris Palmer") Updated example to use Foot contructor.
+*   2020-05-02 [`baa737c`](https://github.com/nophead/NopSCADlib/commit/baa737c4d83be0ab38685122ebe535872fe63e20 "show commit") [C.P.](# "Chris Palmer") Updated example to use Foot constructor.
 
 *   2020-05-02 [`70b13d2`](https://github.com/nophead/NopSCADlib/commit/70b13d2f2723caa18a69afb7a179d88366c82c51 "show commit") [C.P.](# "Chris Palmer") Added functions to create property lists that are created by the client.
 Foot, box, bbox, pbox, `flat_hinge` and `strap_handle`.
@@ -1130,7 +1509,7 @@ The implementation files are still lower case for backwards compatibility.
 
 *   2020-03-03 [`bd60b50`](https://github.com/nophead/NopSCADlib/commit/bd60b50b099d76f6588ddfe900be276ed7d0cf98 "show commit") [C.P.](# "Chris Palmer") Removed lower case tests
 
-*   2020-03-03 [`4d51cb7`](https://github.com/nophead/NopSCADlib/commit/4d51cb73f3d2b3a92ac4c12a2002bc4918228969 "show commit") [C.P.](# "Chris Palmer") Table of contents now has three vitamin coloumns
+*   2020-03-03 [`4d51cb7`](https://github.com/nophead/NopSCADlib/commit/4d51cb73f3d2b3a92ac4c12a2002bc4918228969 "show commit") [C.P.](# "Chris Palmer") Table of contents now has three vitamin columns
 
 *   2020-03-02 [`3b77c97`](https://github.com/nophead/NopSCADlib/commit/3b77c975325851caf5e602ae6ceaa8e5d9126425 "show commit") [C.P.](# "Chris Palmer") Example now include `core.scad` instead of `lib.scad`.
 
@@ -1407,7 +1786,7 @@ This means 5mm, 6mm etc comes before 10mm in BOM.
 
 *   2020-01-11 [`d1324a6`](https://github.com/nophead/NopSCADlib/commit/d1324a670eb7ec898e6663dc9394fc1bd19ef664 "show commit") [M.B.](# "Martin Budden") Added JST-XH connector for pcbs.
 
-*   2020-02-22 [`599fbba`](https://github.com/nophead/NopSCADlib/commit/599fbba6c2b036a4a22fa04f2e06f67ef5bb9578 "show commit") [C.P.](# "Chris Palmer") Reduced dependecies in `pcb_mount` test.
+*   2020-02-22 [`599fbba`](https://github.com/nophead/NopSCADlib/commit/599fbba6c2b036a4a22fa04f2e06f67ef5bb9578 "show commit") [C.P.](# "Chris Palmer") Reduced dependencies in `pcb_mount` test.
 
 ### [v2.19.0](https://github.com/nophead/NopSCADlib/releases/tag/v2.19.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v2.16.0...v2.19.0 "diff with v2.16.0")
 *   2020-02-22 [`6097e07`](https://github.com/nophead/NopSCADlib/commit/6097e0709498166c61712094fcc11f083e25959f "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
@@ -1723,7 +2102,7 @@ IEC screw length fixed at 10 if inserts used.
 *   2019-06-14 [`a51e96e`](https://github.com/nophead/NopSCADlib/commit/a51e96ec433c6d347e0d313573585cda9978e7b4 "show commit") [C.P.](# "Chris Palmer") Nuts now show their thickness on the BOM so half nuts have a different description.
 
 ## [v1.0.0](https://github.com/nophead/NopSCADlib/releases/tag/v1.0.0 "show release") Breaking Changes [...](https://github.com/nophead/NopSCADlib/compare/v0.0.1...v1.0.0 "diff with v0.0.1")
-*   2019-06-14 [`b719601`](https://github.com/nophead/NopSCADlib/commit/b719601a645d899f5477c13a34f857d178bcc3a1 "show commit") [C.P.](# "Chris Palmer") Fixed cable strip parameters and BOM desciption
+*   2019-06-14 [`b719601`](https://github.com/nophead/NopSCADlib/commit/b719601a645d899f5477c13a34f857d178bcc3a1 "show commit") [C.P.](# "Chris Palmer") Fixed cable strip parameters and BOM description
 
 #### [v0.0.1](https://github.com/nophead/NopSCADlib/releases/tag/v0.0.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v0.0.0...v0.0.1 "diff with v0.0.0")
 *   2019-06-14 [`5ede2d0`](https://github.com/nophead/NopSCADlib/commit/5ede2d0895a8a813ef2bc47bf94462d668bc440b "show commit") [C.P.](# "Chris Palmer") Smooth pulleys now show their OD on the BOM.

docs/usage.md

@@ -270,6 +270,22 @@ The target config file is selected by generating `target.scad` that includes `co
 The rest of the project includes `target.scad` to use the configuration.
 Additionally all the generated file directories (assemblies, bom, stls, dxfs, etc.) are placed in a sub-directory called `<target_name>`.
 
+The build system will look for a `<target_name>_assembly` module and use it as the top level module instead of `main_assembly` if it it exists.
+That allows the project description to be target specific if the top level modules are in different scad files.
+The top level assembly instructions and assembly contents could also be different if appropriate.
+
+If the top level module is just a shell wrapper that simply includes one other assembly, with no additional parts, then it is removed from the build instructions and
+the assembly it calls becomes the top level. This allows a different project description for each target but only one set of top level instructions without repeating them.
+
+### Costed BOMs
+
+A costed bill of materials can be made by opening the generated file `bom/bom.csv` in a spreadsheet program using a single quote as the string delimiter and comma as the field separator.
+That gets a list of part descriptions and quantities to which prices can be added to get the total cost and perhaps a URL of where to buy each part.
+
+If a Python file called `parts.py` is found then `bom.py` will attempt to call functions for each part to get a price and URL.
+Any functions not found are printed, so you can see the format expected.
+The function are passed the quantity to allow them to calculate volume discounts, etc.
+
 ### Other libraries
 
 The build scripts need to be able to locate the source files where the modules to generate the STL files and assemblies reside. They will search all the scad files

examples/MainsBreakOutBox/bom/bom.csv

@@ -0,0 +1,16 @@
+'Ferrule for 1.5mm^2 wire - not shown',  3
+'Wire blue 30/0.25mm strands, length 150mm - not shown',  2
+'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
+'4mm shielded jack socket blue',  2
+'4mm shielded jack socket brown',  1
+'4mm shielded jack socket green',  2
+'Mains socket 13A',  1
+'Nut M3 x 2.4mm nyloc',  6
+'Screw M3 cs cap x 12mm',  2
+'Screw M3 cs cap x 20mm',  2
+'Screw M3 dome x 10mm',  4
+'Heatshrink sleeving ID 3.2mm x 15mm - not shown',  8
+'Washer  M3 x 7mm x 0.5mm', 10

examples/MainsBreakOutBox/platters/all.scad

@@ -0,0 +1,11 @@
+include <NopSCADlib/core.scad>
+
+*use_stl("socket_box"); // Importing the STL gives a CGAL error although NetFabb finds nothing wrong with it.
+
+use <../scad/bob_main.scad>
+
+render() socket_box_stl();
+
+for(i = [0 : 3])
+    translate([i * 25 - 1.5 * 25, -70])
+        use_stl("foot");

examples/MainsBreakOutBox/scad/bob_main.scad

@@ -31,7 +31,8 @@
 //! while its earth is disconnected. Don't be tempted to float the earth of an oscilloscope this way, use a mains isolation transformer to power the DUT instead.
 //! Earth leakage can be measured Canadian CSA style by disconnected the neutral link from the left socket and linking the central neutral to the live.
 //
-$extrusion_width = 0.5;
+$extrusion_width = 0.4;
+$layer_height = 0.2;
 $pp1_colour = "dimgrey";
 $pp2_colour = [0.9, 0.9, 0.9];
 

examples/MainsBreakOutBox/stls/deps/all.txt

@@ -0,0 +1,5 @@
+socket_box.stl
+foot.stl
+foot.stl
+foot.stl
+foot.stl

gallery/readme.md

@@ -25,6 +25,11 @@ WiFi controllable PSU
 
 ![](IOT_50V_PSU.png)
 
+## IOT LOAD
+WiFi controllable programmable load
+
+![](IOT_LOAD.png)
+
 ## Lab ATX PSU
 Bench power supply built around an ATX PSU.
 
@@ -65,6 +70,16 @@ Mains isolated and variable supply with metering.
 
 
 
+## PSU Cover
+A base and shroud to make PSU safe to sit on a desk
+
+![](PSU_cover.png)
+
+## PotBox
+Potentiometer box with course and fine controls and three 4mm binding posts
+
+![](PotBox.png)
+
 ## SunBot
 A solar tracker to keep a solar panel pointing at the sun.
 

global_defs.scad

@@ -24,22 +24,23 @@
 //  bom defaults to 0
 //  Setting $bom on the command line or in the main file before including lib.scad overrides it everywhere.
 //  Setting $bom after including lib overrides bom in the libs but not in the local file.
-//  Setting $_bom in the local file overrides it in the local file but not in the libs.
 //
 rr_green = [0, 146/255, 0];                                               // RepRap logo colour
+crimson  = [220/255, 20/255, 60/255];
 
-$_bom           = is_undef($bom)             ? 0      : $bom;             // 0 no bom, 1 assemblies and stls, 2 vitamins as well
-$exploded       = is_undef($explode)         ? 0      : $explode;         // 1 for exploded view
-layer_height    = is_undef($layer_height)    ? 0.25   : $layer_height;    // layer heigth when printing
+layer_height    = is_undef($layer_height)    ? 0.25   : $layer_height;    // layer height when printing
 extrusion_width = is_undef($extrusion_width) ? 0.5    : $extrusion_width; // filament width when printing
 nozzle          = is_undef($nozzle)          ? 0.45   : $nozzle;          // 3D printer nozzle
 cnc_bit_r       = is_undef($cnc_bit_r)       ? 1.2    : $cnc_bit_r;       // minimum tool radius when milling 2D objects
-pp1_colour      = is_undef($pp1_colour)      ? rr_green : $pp1_colour;    // printed part colour 1, RepRap logo colour
-pp2_colour      = is_undef($pp2_colour)      ? "Crimson"  : $pp2_colour;  // printed part colour 2
-pp3_colour      = is_undef($pp3_colour)      ? "SteelBlue" : $pp3_colour; // printed part colour 3
-pp4_colour      = is_undef($pp4_colour)      ? "darkorange" : $pp4_colour;// printed part colour 4
 show_rays       = is_undef($show_rays)       ? false  : $show_rays;       // show camera sight lines and light direction
 show_threads    = is_undef($show_threads)    ? false  : $show_threads;    // show screw threads
+show_plugs      = is_undef($show_plugs)      ? false  : $show_plugs;      // plugs on headers
+teardrop_angle  = is_undef($teardrop_angle)  ? 45     : $teardrop_angle;  // teardrop angle
+pp1_colour      = is_undef($pp1_colour)      ? rr_green     : $pp1_colour;// printed part colour 1, RepRap logo colour
+pp2_colour      = is_undef($pp2_colour)      ? crimson      : $pp2_colour;// printed part colour 2
+pp3_colour      = is_undef($pp3_colour)      ? "SteelBlue"  : $pp3_colour;// printed part colour 3
+pp4_colour      = is_undef($pp4_colour)      ? "darkorange" : $pp4_colour;// printed part colour 4
+
 
 // Minimum wall is about two filaments wide but we extrude it closer to get better bonding
 squeezed_wall = $preview ? 2 * extrusion_width - layer_height * (1 - PI / 4)
@@ -50,12 +51,14 @@ eps = 1/128;     // small fudge factor to stop CSG barfing on coincident faces.
 $fa = 6;
 $fs = extrusion_width / 2;
 
-function round_to_layer(z) = ceil(z / layer_height) * layer_height;
+function round_to_layer(z) = ceil(z / layer_height) * layer_height;         //! Round up to a multiple of layer_height.
+
 // Some additional named colours
-function grey(n) = [0.01, 0.01, 0.01] * n;                                          //! Generate a shade of grey to pass to color().
-gold                            = [255/255, 215/255, 0/255];
-brass                           = [255/255, 220/255, 100/255];
-silver                          = [0.75, 0.75, 0.75];
+function grey(n) = [0.01, 0.01, 0.01] * n;                                  //! Generate a shade of grey to pass to color().
+silver           = [0.75, 0.75, 0.75];
+gold             = [255, 215,   0] / 255;
+brass            = [255, 220, 100] / 255;
+copper           = [230, 140,  51] / 255;
 
 /*
  * Enums
@@ -71,11 +74,6 @@ hs_grub   = 4;     // pulley set screw
 hs_cs_cap = 5;
 hs_dome   = 6;
 //
-// Hot end descriptions
-//
-jhead   = 1;
-e3d     = 2;
-//
 // Face enumeration
 //
 f_bottom = 0;

lib.scad

@@ -28,6 +28,7 @@ include <vitamins/pcbs.scad>
 include <vitamins/batteries.scad>
 include <vitamins/bearing_blocks.scad>
 include <vitamins/blowers.scad>
+include <vitamins/bldc_motors.scad>
 include <vitamins/box_sections.scad>
 include <vitamins/bulldogs.scad>
 include <vitamins/buttons.scad>
@@ -54,6 +55,7 @@ include <vitamins/pulleys.scad>
 include <vitamins/ring_terminals.scad>
 include <vitamins/rails.scad>
 include <vitamins/rod.scad>
+include <vitamins/servo_motors.scad>
 include <vitamins/shaft_couplings.scad>
 include <vitamins/sheets.scad>
 include <vitamins/sk_brackets.scad>

libtest.scad

@@ -41,10 +41,12 @@
 //
 include <lib.scad>
 
+use <tests/7_segments.scad>
 use <tests/ball_bearings.scad>
 use <tests/batteries.scad>
 use <tests/bearing_blocks.scad>
 use <tests/belts.scad>
+use <tests/BLDC_motors.scad>
 use <tests/blowers.scad>
 use <tests/box_sections.scad>
 use <tests/bulldogs.scad>
@@ -82,6 +84,7 @@ use <tests/panel_meters.scad>
 use <tests/PCBs.scad>
 use <tests/pillars.scad>
 use <tests/pillow_blocks.scad>
+use <tests/potentiometers.scad>
 use <tests/press_fit.scad>
 use <tests/PSUs.scad>
 use <tests/pulleys.scad>
@@ -91,6 +94,7 @@ use <tests/rockers.scad>
 use <tests/rod.scad>
 use <tests/screws.scad>
 use <tests/sealing_strip.scad>
+use <tests/servo_motors.scad>
 use <tests/shaft_couplings.scad>
 use <tests/sheets.scad>
 use <tests/SK_brackets.scad>
@@ -119,6 +123,7 @@ use <tests/fixing_block.scad>
 use <tests/flat_hinge.scad>
 use <tests/foot.scad>
 use <tests/handle.scad>
+use <tests/knob.scad>
 use <tests/PCB_mount.scad>
 use <tests/pocket_handle.scad>
 use <tests/printed_box.scad>
@@ -169,31 +174,33 @@ translate([x5, cable_grommets_y + 470]) {
         flat_hinges();
 }
 
-translate([x5, cable_grommets_y + 370])
+translate([x5, cable_grommets_y + 380])
     no_explode() socket_boxes();
 
-translate([x5 + 60, cable_grommets_y + 200])
-    strap_handles();
-
 translate([640, cable_grommets_y + 200])
     printed_pulley_test();
 
-translate([x5, cable_grommets_y + 250])
+translate([x5, cable_grommets_y + 200])
+    knobs();
+
+translate([x5 + 60, cable_grommets_y + 250])
+    strap_handles();
+
+translate([x5, cable_grommets_y + 300])
     handle();
 
 translate([950, 600])
     box_test();
 
-translate([830, 770])
+translate([900, 750])
     pocket_handles();
 
-translate([950, 750])
+translate([900, 850])
     printed_boxes();
 
-translate([850, 1330])
+translate([850, 1330 + 85])
     bbox_test();
 
-
 inserts_y = 0;
 nuts_y = inserts_y + 20;
 washers_y = nuts_y + 120;
@@ -205,13 +212,14 @@ sealing_strip_y = springs_y + 20;
 tubings_y = sealing_strip_y + 20;
 pillars_y = tubings_y + 20;
 ball_bearings_y = pillars_y + 40;
-pulleys_y = ball_bearings_y +40;
-hot_ends_y = pulleys_y + 60;
-linear_bearings_y = hot_ends_y + 50;
-sheets_y = linear_bearings_y + 90;
+pulleys_y = ball_bearings_y + 40;
+leadnuts_y = pulleys_y + 60;
+linear_bearings_y = leadnuts_y + 50;
+steppers_y = linear_bearings_y + 110;
+sheets_y = steppers_y + 55;
 pcbs_y = sheets_y + 60;
-displays_y = pcbs_y + 170;
-fans_y = displays_y + 80;
+displays_y = pcbs_y + 140;
+fans_y = displays_y + 110;
 transformers_y = fans_y + 120;
 psus_y = transformers_y + 190;
 
@@ -254,13 +262,16 @@ translate([x0, ball_bearings_y])
 translate([x0, pulleys_y])
     pulleys();
 
+translate([x0, leadnuts_y])
+    leadnuts();
+
 translate([x0, linear_bearings_y]) {
     linear_bearings();
     rods();
 }
 
-translate([x0 + 10, hot_ends_y])
-    hot_ends();
+translate([x0, steppers_y])
+    stepper_motors();
 
 translate([x0, sheets_y])
     sheets();
@@ -278,7 +289,7 @@ translate([x0, fans_y]) {
         fan_guards();
 }
 
-translate([x0, transformers_y])
+translate([760, fans_y])
     variacs();
 
 translate([x0, psus_y]) {
@@ -290,7 +301,6 @@ translate([x0, psus_y]) {
 zipties_y = 0;
 bulldogs_y = zipties_y + 30;
 swiss_clips_y = bulldogs_y + 35;
-leadnuts_y = swiss_clips_y + 50;
 
 translate([x1, zipties_y])
     zipties();
@@ -301,10 +311,6 @@ translate([x1, bulldogs_y])
 translate([x1, swiss_clips_y])
     swiss_clips();
 
-translate([x1, leadnuts_y])
-    leadnuts();
-
-
 leds_y = 0;
 carriers_y = leds_y + 40;
 magnets_y = carriers_y + 40;
@@ -361,18 +367,18 @@ iecs_y = d_connectors_y + 80;
 modules_y = iecs_y + 60;
 ssrs_y = modules_y + 80;
 blowers_y = ssrs_y + 60;
-batteries_y = blowers_y + 100;
-steppers_y = batteries_y + 55;
-panel_meters_y = steppers_y + 70;
+hot_ends_y = blowers_y + 100;
+batteries_y = hot_ends_y + 55;
+panel_meters_y = batteries_y + 70;
 extrusions_y = panel_meters_y + 80;
 
 translate([x3, veroboard_y])
     veroboard_test();
 
-translate([x3 + 70, veroboard_y + 30])
+translate([x3 + 60, veroboard_y + 20])
     geared_steppers();
 
-translate([x3 + 140, veroboard_y + 20])
+translate([x3 + 160, ssrs_y])
     pcb_mounts();
 
 translate([x3 + 170, veroboard_y + 16])
@@ -408,8 +414,8 @@ translate([x3, blowers_y])
 translate([x3, batteries_y])
     batteries();
 
-translate([x2, steppers_y])  // interloper
-    stepper_motors();
+translate([x3 + 10, hot_ends_y])
+    hot_ends();
 
 translate([x2, panel_meters_y])
     panel_meters();
@@ -417,7 +423,7 @@ translate([x2, panel_meters_y])
 translate([x2, extrusions_y])
     extrusions();
 
-translate([x3, transformers_y])
+translate([400, transformers_y])
     transformers();
 
 
@@ -425,16 +431,21 @@ belts_y = 0;
 rails_y = belts_y + 200;
 extrusion_brackets_y = rails_y + 250;
 sk_brackets_y = extrusion_brackets_y + 80;
-kp_pillow_blocks_y = sk_brackets_y + 50;
+kp_pillow_blocks_y = sk_brackets_y + 60;
 scs_bearing_blocks_y = kp_pillow_blocks_y + 60;
-box_sections_y = sheets_y;
+box_sections_y = batteries_y;
+BLDC_y = scs_bearing_blocks_y + 120;
+pot_y = BLDC_y + 40;
+cable_strip_y = pot_y + 50;
+
+translate([0, transformers_y])
+    servo_motors();
 
 translate([x4 + 200, belts_y + 58]) {
     belt_test();
 
     translate([0, 60])
         opengrab_test();
-
 }
 
 translate([x4 + 175, belts_y, -20])
@@ -443,7 +454,7 @@ translate([x4 + 175, belts_y, -20])
 translate([x4, rails_y + 130])
     rails();
 
-translate([770, fans_y + 50])
+translate([x4, cable_strip_y])
     cable_strips();
 
 translate([x4, kp_pillow_blocks_y])
@@ -455,13 +466,19 @@ translate([x4, sk_brackets_y])
 translate([x4, extrusion_brackets_y])
     extrusion_brackets();
 
-translate([x4 + 120, extrusion_brackets_y])
+translate([x1, swiss_clips_y + 50])
     shaft_couplings();
 
 translate([x4, scs_bearing_blocks_y])
     scs_bearing_blocks();
 
-translate([x4, box_sections_y])
+translate([x4, BLDC_y])
+    bldc_motors();
+
+translate([x4, pot_y])
+    potentiometers();
+
+translate([x2, box_sections_y])
     box_sections();
 
 translate([x6, 125])

printed/box.scad

@@ -31,9 +31,11 @@
 //!
 //! Normally the side sheets are the same type but they can be overridden individually as long as the substitute has the same thickness.
 //
-include <../core.scad>
+include <../utils/core/core.scad>
 use <../vitamins/sheet.scad>
 use <../vitamins/insert.scad>
+use <../vitamins/screw.scad>
+use <../vitamins/washer.scad>
 use <../utils/quadrant.scad>
 use <../utils/round.scad>
 
@@ -48,12 +50,13 @@ function box_sheets(type)      = type[3]; //! Sheet type used for the sides
 function box_top_sheet(type)   = type[4]; //! Sheet type for the top
 function box_base_sheet(type)  = type[5]; //! Sheet type for the bottom
 function box_feet(type)        = type[6]; //! True to enable feet on the bottom bezel
-function box_width(type)       = type[7]; //! Internal width
-function box_depth(type)       = type[8]; //! Internal depth
-function box_height(type)      = type[9]; //! Internal height
+function box_name(type)        = type[7]; //! Name for projects with more than one box
+function box_width(type)       = type[8]; //! Internal width
+function box_depth(type)       = type[9]; //! Internal depth
+function box_height(type)      = type[10];//! Internal height
 
-function box(screw, wall, sheets, top_sheet, base_sheet, size, feet = false, shelf_screw = M3_dome_screw) = //! Construct a property list for a box.
- concat([screw, shelf_screw, wall, sheets, top_sheet, base_sheet, feet], size);
+function box(screw, wall, sheets, top_sheet, base_sheet, size, feet = false, shelf_screw = undef, name = "box") = //! Construct a property list for a box.
+ concat([screw, is_undef(shelf_screw) ? screw : shelf_screw, wall, sheets, top_sheet, base_sheet, feet, name], size);
 
 function box_bezel_clearance(type) = bezel_clearance;
 
@@ -64,7 +67,7 @@ function box_washer(type) = screw_washer(box_screw(type));
 function box_insert(type) = screw_insert(box_screw(type));
 function box_shelf_insert(type) = screw_insert(box_shelf_screw(type));
 
-function box_hole_inset(type) = washer_radius(box_washer(type)) + 1;
+function box_hole_inset(type) = washer_radius(box_washer(type)) + 1; //! Screw inset from the corner of the internal dimensions
 function box_insert_r(type) = insert_hole_radius(box_insert(type));
 function box_insert_l(type) = insert_length(box_insert(type));
 function box_boss_r(type) = ceil(corrected_radius(box_insert_r(type)) + box_wall(type));
@@ -89,6 +92,8 @@ function box_bezel_height(type, bottom) = //! Bezel height for top or bottom
     let(t1 = sheet_thickness(box_base_sheet(type)), t2 = sheet_thickness(box_top_sheet(type)))
         box_corner_rad(type) + box_profile_overlap(type) + (bottom ? max(t1, t2) : t2) - sheet_thickness(box_sheets(type));
 
+function box_bc_name(type, suffix) = let(name = box_name(type)) name == "box" ? suffix : str(name, "_", suffix); // Backwards compatibale name
+
 grill_hole = 5;
 grill_gap = 1.9;
 
@@ -141,7 +146,7 @@ module box_corner_profile_2D(type) { //! The 2D shape of the corner profile.
 module box_corner_profile(type) { //! Generates the corner profile STL for 3D printing.
     length = box_height(type) - 2 * box_margin(type);
 
-    stl("box_corner_profile")
+    stl(str(box_name(type), "_corner_profile"))
         difference() {
             linear_extrude(length, center = true, convexity = 5)
                 box_corner_profile_2D(type);
@@ -190,7 +195,7 @@ module box_corner_profile_section(type, section, sections) { //! Generates inter
 }
 
 module box_corner_profile_sections(type, section, sections) { //! Generate four copies of a corner profile section
-    stl("box_corner_profile");
+    stl(str(box_name(type), "_corner_profile"));
     offset = box_boss_r(type) + 1;
     for(i = [0 : 3])
         rotate(i * 90)
@@ -220,7 +225,7 @@ module box_bezel(type, bottom) { //! Generates top and bottom bezel STLs
     height = box_bezel_height(type, bottom);
     foot_extension = foot_height - height;
 
-    stl(bottom ? "bottom_bezel" : "top_bezel")
+    stl(box_bc_name(type, bottom ? "bottom_bezel" : "top_bezel"))
         difference() {
             w = box_width(type);
             d = box_depth(type);
@@ -353,7 +358,6 @@ module box_bezel_section(type, bottom, rows, cols, x, y) { //! Generates interlo
 
                 translate([0, bw2 / 2, dh2 / 2])
                     cube([eps, bw2 - 2 * dowel_wall + 2 * extrusion_width, dh2], center = true);
-
             }
         }
     }
@@ -438,7 +442,7 @@ module box_screw_hole_positions(type) {
 }
 
 module box_base_blank(type) { //! Generates a 2D template for the base sheet
-    dxf("box_base");
+    dxf(str(box_name(type), "_base"));
 
     difference() {
         sheet_2D(box_base_sheet(type), box_width(type), box_depth(type), box_sheet_r(type));
@@ -449,7 +453,7 @@ module box_base_blank(type) { //! Generates a 2D template for the base sheet
 }
 
 module box_top_blank(type) {  //! Generates a 2D template for the top sheet
-    dxf("box_top");
+    dxf(str(box_name(type), "_top"));
 
     difference() {
         sheet_2D(box_top_sheet(type), box_width(type), box_depth(type), box_sheet_r(type));
@@ -464,7 +468,7 @@ function subst_sheet(type, sheet) =
         sheet ? assert(sheet_thickness(sheet) == sheet_thickness(s)) sheet : s;
 
 module box_shelf_blank(type, sheet = false) { //! Generates a 2D template for a shelf sheet
-    dxf("box_shelf");
+    dxf(str(box_name(type), "_shelf"));
 
     difference() {
         sheet_2D(subst_sheet(type, sheet), box_width(type) - bezel_clearance, box_depth(type) - bezel_clearance, 1);
@@ -512,7 +516,7 @@ module box_shelf_bracket(type, screw_positions, wall = undef) { //! Generates a
                         square([lip, eps]);
                 }
 
-    stl("shelf_bracket")
+    stl(box_bc_name(type, "shelf_bracket"))
         difference() {
             union() {
                 linear_extrude(w)
@@ -565,32 +569,49 @@ module box_shelf_bracket_section(type, rows, cols, x, y) { //! Generates section
 }
 
 module box_left_blank(type, sheet = false) { //! Generates a 2D template for the left sheet, `sheet` can be set to override the type
-    dxf("box_left");
+    dxf(str(box_name(type), "_left"));
 
     sheet_2D(subst_sheet(type, sheet), box_depth(type) - sheet_reduction(type), box_height(type) - sheet_reduction(type), 1);
 }
 
 module box_right_blank(type, sheet = false) { //! Generates a 2D template for the right sheet, `sheet` can be set to override the type
-    dxf("box_right");
+    dxf(str(box_name(type), "_right"));
 
     sheet_2D(subst_sheet(type, sheet), box_depth(type) - sheet_reduction(type), box_height(type) - sheet_reduction(type), 1);
 }
 
 module box_front_blank(type, sheet = false) { //! Generates a 2D template for the front sheet, `sheet` can be set to override the type
-    dxf("box_front");
+    dxf(str(box_name(type), "_front"));
 
     sheet_2D(subst_sheet(type, sheet), box_width(type) - sheet_reduction(type), box_height(type) - sheet_reduction(type), 1);
 }
 
 module box_back_blank(type, sheet = false) { //! Generates a 2D template for the back sheet, `sheet` can be set to override the type
-    dxf("box_back");
+    dxf(str(box_name(type), "_back"));
 
     sheet_2D(subst_sheet(type, sheet), box_width(type) - sheet_reduction(type), box_height(type) - sheet_reduction(type), 1);
 }
 
-module box_base(type)  render_2D_sheet(box_base_sheet(type)) box_base_blank(type);  //! Default base, can be overridden to customise
-module box_top(type)   render_2D_sheet(box_top_sheet(type))  box_top_blank(type);   //! Default top, can be overridden to customise
-module box_back(type)  render_2D_sheet(box_sheets(type))     box_back_blank(type);  //! Default back, can be overridden to customise
-module box_front(type) render_2D_sheet(box_sheets(type))     box_front_blank(type); //! Default front, can be overridden to customise
-module box_left(type)  render_2D_sheet(box_sheets(type))     box_left_blank(type);  //! Default left side, can be overridden to customise
-module box_right(type) render_2D_sheet(box_sheets(type))     box_right_blank(type); //! Default right side, can be overridden to customise
+module box_base(type)   //! Default base, can be overridden to customise
+    render_2D_sheet(box_base_sheet(type))
+        box_base_blank(type);
+
+module box_top(type)    //! Default top, can be overridden to customise
+    render_2D_sheet(box_top_sheet(type))
+        box_top_blank(type);
+
+module box_back(type)   //! Default back, can be overridden to customise
+    render_2D_sheet(box_sheets(type))
+        box_back_blank(type);
+
+module box_front(type)  //! Default front, can be overridden to customise
+    render_2D_sheet(box_sheets(type))
+        box_front_blank(type);
+
+module box_left(type)   //! Default left side, can be overridden to customise
+    render_2D_sheet(box_sheets(type))
+        box_left_blank(type);
+
+module box_right(type) //! Default right side, can be overridden to customise
+    render_2D_sheet(box_sheets(type))
+        box_right_blank(type);

printed/box_assembly.scad

@@ -23,12 +23,12 @@
 // parameters to make the assembly views. E.g. module box_assembly() _box_assembly(box);
 //
 module _box_assembly(type, top = true, base = true, left = true, right = true, back = true, front = true, bezels = true, corners = 4)
-assembly("box") {
+assembly(box_name(type)) {
     echo("Box:", box_width(type), box_depth(type), box_height(type));
 
     t = sheet_thickness(box_sheets(type));
 
-    for(corner = [0 :  corners - 1]) {
+    for(corner = [0 : 1 : corners - 1]) {
         x = [-1,1,1,-1][corner];
         y = [-1,-1,1,1][corner];
         translate([x * (box_width(type) / 2 + 25 * exploded()), y * (box_depth(type) / 2 + 25 * exploded())])

printed/butt_box.scad

@@ -54,7 +54,7 @@ function bbox(screw, sheets, base_sheet, top_sheet, span, size, name = "bbox", s
  [ screw, sheets, base_sheet, top_sheet, span, size.x, size.y, size.z, name, skip_blocks, star_washers ];
 
 function bbox_volume(type) = bbox_width(type) * bbox_depth(type) * bbox_height(type) / 1000000; //! Internal volume in litres
-function bbox_area(type) = let(w =  bbox_width(type), d = bbox_depth(type), h = bbox_height(type)) //! Internal surdface area in m^2
+function bbox_area(type) = let(w =  bbox_width(type), d = bbox_depth(type), h = bbox_height(type)) //! Internal surface area in m^2
     2 * (w * d + w * h + d * h) / 1000000;
 
 module bbox_shelf_blank(type) { //! 2D template for a shelf
@@ -198,12 +198,29 @@ module bbox_back_blank(type, sheet = false) { //! 2D template for the back
     }
 }
 
-module bbox_base(type)  render_2D_sheet(bbox_base_sheet(type)) bbox_base_blank(type);   //! Default base, can be overridden to customise
-module bbox_top(type)   render_2D_sheet(bbox_top_sheet(type)) bbox_top_blank(type);     //! Default top, can be overridden to customise
-module bbox_back(type)  render_2D_sheet(bbox_sheets(type)) bbox_back_blank(type);       //! Default back, can be overridden to customise
-module bbox_front(type) render_2D_sheet(bbox_sheets(type)) bbox_front_blank(type);      //! Default front, can be overridden to customise
-module bbox_left(type)  render_2D_sheet(bbox_sheets(type)) bbox_left_blank(type);       //! Default left side, can be overridden to customise
-module bbox_right(type) render_2D_sheet(bbox_sheets(type)) bbox_right_blank(type);      //! Default right side, can be overridden to customise
+module bbox_base(type)  //! Default base, can be overridden to customise
+    render_2D_sheet(bbox_base_sheet(type))
+        bbox_base_blank(type);
+
+module bbox_top(type)   //! Default top, can be overridden to customise
+    render_2D_sheet(bbox_top_sheet(type))
+        bbox_top_blank(type);
+
+module bbox_back(type)  //! Default back, can be overridden to customise
+    render_2D_sheet(bbox_sheets(type))
+        bbox_back_blank(type);
+
+module bbox_front(type) //! Default front, can be overridden to customise
+    render_2D_sheet(bbox_sheets(type))
+        bbox_front_blank(type);
+
+module bbox_left(type)  //! Default left side, can be overridden to customise
+    render_2D_sheet(bbox_sheets(type))
+        bbox_left_blank(type);
+
+module bbox_right(type) //! Default right side, can be overridden to customise
+    render_2D_sheet(bbox_sheets(type))
+        bbox_right_blank(type);
 
 module _bbox_assembly(type, top = true, base = true, left = true, right = true, back = true, front = true) { //! The box assembly, wrap with a local copy without parameters
     width = bbox_width(type);

printed/door_hinge.scad

@@ -45,7 +45,7 @@ function door_hinge_stat_screw() = stat_screw;              //! Screw use to fas
 function door_hinge_stat_width() = stat_width;              //! Width of the stationary part
 function door_hinge_stat_length() = stat_length;            //! Length of the stationary part
 
-module door_hinge_hole_positions(dir = 0) {                 //! Position chidren at the door hole positions
+module door_hinge_hole_positions(dir = 0) {                 //! Position children at the door hole positions
     hole_pitch = width - 10;
 
     for(side = [-1, 1])

printed/door_latch.scad

@@ -57,7 +57,7 @@ module door_latch_stl() { //! Generates the STL for the printed part
         }
 }
 
-module door_latch_assembly(sheet_thickness = 3) { //! The assembly for a specified sheet thickess
+module door_latch_assembly(sheet_thickness = 3) { //! The assembly for a specified sheet thickness
     washer = screw_washer(screw);
     nut = screw_nut(screw);
 

printed/drag_chain.scad

@@ -20,7 +20,7 @@
 //
 //! Parametric cable drag chain to limit the bend radius of a cable run.
 //!
-//! Each link has a maximum bend angle of 45°, so the mininium radius is proportional to the link length.
+//! Each link has a maximum bend angle of 45°, so the minimum radius is proportional to the link length.
 //!
 //! The travel property is how far it can move in each direction, i.e. half the maximum travel if the chain is mounted in the middle of the travel.
 //!
@@ -35,18 +35,17 @@ include <../core.scad>
 use <../utils/horiholes.scad>
 use <../utils/maths.scad>
 
-clearance = 0.1;
-
 function drag_chain_name(type)        = type[0]; //! The name to allow more than one in a project
 function drag_chain_size(type)        = type[1]; //! The internal size and link length
 function drag_chain_travel(type)      = type[2]; //! X travel
 function drag_chain_wall(type)        = type[3]; //! Side wall thickness
 function drag_chain_bwall(type)       = type[4]; //! Bottom wall
 function drag_chain_twall(type)       = type[5]; //! Top wall
-function drag_chain_screw(type)       = type[6]; //! Mounting screw for the ends
-function drag_chain_screw_lists(type) = type[7]; //! Two lists of four bools to say which screws positions are used
+function drag_chain_clearance(type)   = type[6]; //! Clearance around joints
+function drag_chain_supports(type)    = type[7]; //! Whether to print version of chain with or without supports
+function drag_chain_screw(type)       = type[8]; //! Mounting screw for the ends
+function drag_chain_screw_lists(type) = type[9]; //! Two lists of four bools to say which screws positions are used
 
-function drag_chain_clearance() = clearance; //! Clearance around joints.
 
 function drag_chain_radius(type) = //! The bend radius at the pivot centres
     let(s = drag_chain_size(type))
@@ -56,12 +55,15 @@ function drag_chain_z(type) = //! Outside dimension of a 180 bend
     let(os = drag_chain_outer_size(type), s = drag_chain_size(type))
         2 * drag_chain_radius(type) + os.z;
 
-function drag_chain(name, size, travel, wall = 1.6, bwall = 1.5, twall = 1.5, screw = M2_cap_screw, screw_lists = [[1,0,0,1],[1,0,0,1]]) = //! Constructor
-    [name, size, travel, wall, bwall, twall, screw, screw_lists];
+function drag_chain(name, size, travel, wall = 1.6, bwall = 1.5, twall = 1.5, clearance = 0.1, supports = true, screw = M2_cap_screw, screw_lists = [[1,0,0,1],[1,0,0,1]]) = //! Constructor
+    [name, size, travel, wall, bwall, twall, clearance, supports, screw, screw_lists];
 
 function drag_chain_outer_size(type) = //! Link outer dimensions
     let(s = drag_chain_size(type), z = s.z + drag_chain_bwall(type) + drag_chain_twall(type))
-        [s.x + z, s.y + 4 * drag_chain_wall(type) + 2 * clearance, z];
+        [s.x + z, s.y + 4 * drag_chain_wall(type) + 2 * drag_chain_clearance(type), z];
+
+function drag_chain_links(type) = //! Number of links in chain
+    ceil(drag_chain_travel(type) / drag_chain_size(type).x) + 4;
 
 function screw_lug_radius(screw) = //! Radius of a screw lug
     corrected_radius(screw_clearance_radius(screw)) + 3.1 * extrusion_width;
@@ -85,6 +87,7 @@ module drag_chain_screw_positions(type, end) { //! Place children at the screw p
     r = screw_lug_radius(drag_chain_screw(type));
     s = drag_chain_size(type);
     os = drag_chain_outer_size(type);
+    clearance = drag_chain_clearance(type);
     R = os.z / 2;
     x0 = end ? R + norm([drag_chain_cam_x(type), R - drag_chain_twall(type)]) + clearance + r : r;
     x1 = end ? os.x - r : os.x - 2 * R - clearance - r;
@@ -99,7 +102,7 @@ function drag_chain_cam_x(type) = // how far the cam sticks out
     let(s = drag_chain_size(type),
         r =  drag_chain_outer_size(type).z / 2,
         wall =  drag_chain_wall(type),
-        cam_r = s.x - 2 * clearance - wall - r,  // inner_x_normal - clearance - r
+        cam_r = s.x - 2 * drag_chain_clearance(type) - wall - r,  // inner_x_normal - clearance - r
         twall = drag_chain_twall(type)
     )   min(sqrt(max(sqr(cam_r) - sqr(r - twall), 0)), r);
 
@@ -111,8 +114,15 @@ module drag_chain_link(type, start = false, end = false, check_kids = true) { //
     bwall = drag_chain_bwall(type);
     twall = drag_chain_twall(type);
     os = drag_chain_outer_size(type);
+    clearance = drag_chain_clearance(type);
+    supports = drag_chain_supports(type);
     r = os.z / 2;
-    pin_r = r / 2;
+    // initial estimates of pin_r and pin_h
+    pin_r0 = r / 2 - 0.2;
+    pin_h0 = min(wall + clearance, 2 * pin_r0 - 1);
+     // for conical pin: ensure minimum radius of top of pin and pin does not overlap cutout
+    pin_r = supports ? r / 2 : min(r / 2 - 0.2, (os.z - 2 * twall - 3 * pin_h0 / 4 - 0.2) / 2);
+    pin_h = min(wall + clearance, 2 * pin_r - 1);
 
     socket_x = r;
     pin_x = socket_x + s.x;
@@ -123,44 +133,51 @@ module drag_chain_link(type, start = false, end = false, check_kids = true) { //
     inner_x = start ? 0 : outer_normal_x - wall; // s.x - clearance - wall
 
     roof_x_normal = 2 * r - twall;
-    roof_x = start ? 0 : roof_x_normal;
-
-    floor_x = start ? 0 : 2 * r;
     cam_x = drag_chain_cam_x(type);
     assert(r + norm([drag_chain_cam_x(type), r - drag_chain_twall(type)]) + clearance <= inner_x || start, "Link must be longer");
 
+    vflip(!supports)
     difference() {
         union() {
             for(side = [-1, 1])
                 rotate([90, 0, 0]) {
                     // Outer cheeks
                     translate_z(side * (os.y / 2 - wall / 2))
-                        linear_extrude(wall, center = true)
-                            difference() {
+                        difference() {
+                            linear_extrude(wall, center = true)
                                 hull() {
                                     if(start)
                                         square([eps, os.z]);
                                     else
                                         translate([socket_x, r])
-                                            rotate(180)
+                                            rotate(supports ? 180 : 0)
                                                 teardrop(r = r, h = 0);
 
                                     translate([outer_end_x - eps, 0])
                                         square([eps, os.z]);
                                 }
                                 if(!start)
-                                    translate([socket_x, r])
-                                        horihole(pin_r, r);
+                                    if(supports)
+                                        translate([socket_x, r, 0])
+                                            horihole(pin_r, r, wall + 2*eps);
+                                    else
+                                        translate([socket_x, r, -side * (wall / 2 + clearance)])
+                                            rotate(180)
+                                                hull() {
+                                                    horihole(r = pin_r + pin_h / 2, z = r, h = eps);
+                                                    translate_z(side * pin_h)
+                                                        horihole(r = pin_r - pin_h / 2, z = r, h = eps);
+                                                }
                             }
                     // Inner cheeks
-                    translate_z(side * (s.y / 2 + wall / 2))
+                    translate_z(side * (s.y / 2 + wall / 2)) {
                         linear_extrude(wall, center = true)
                             difference() {
                                 union() {
                                     hull() {
                                         if(!end) {
                                             translate([pin_x, r])
-                                                rotate(180)
+                                                rotate(supports ? 180 : 0)
                                                     teardrop(r = r, h = 0);
 
                                             translate([pin_x, twall])
@@ -186,31 +203,39 @@ module drag_chain_link(type, start = false, end = false, check_kids = true) { //
                                                     square(os.z);
                                     }
                             }
-                    // Pin
-                    if(!end)
-                        translate([pin_x, r, side * (s.y / 2 + wall + clearance)])
-                            horicylinder(r = pin_r, z = r, h = 2 * wall);
+                        // Pin
+                        if(!end)
+                            if(supports)
+                                translate([pin_x, r, side * (wall / 2 + clearance)])
+                                    horicylinder(r = pin_r, z = r, h = 2 * wall + eps);
+                            else
+                                translate([pin_x, r, side * wall / 2])
+                                    vflip(side == -1)
+                                        cylinder(r1 = pin_r + pin_h / 2, r2 = pin_r - pin_h / 2, h = pin_h + eps);
+                    }
 
                     // Cheek joint
                     translate([inner_x, 0, side * (s.y / 2 + wall) - 0.5])
                         cube([outer_end_x - inner_x, os.z, 1]);
                 }
 
-            // Roof, actually the floor when printed
+            // Roof, actually the floor when printed with supports
+            roof_x = start ? 0 : roof_x_normal;
             roof_end = end ? s.x + 2 * r : s.x + r - twall - clearance;
-            translate([roof_x, -s.y / 2 - 0.5])
-                cube([roof_end - roof_x , s.y + 1, twall]);
+            translate([roof_x, -s.y / 2 - wall, 0]) {
+                cube([roof_end - roof_x, s.y + 2 * wall, twall]);
+                translate([0, -wall, 0])
+                    cube([s.x - roof_x - clearance, s.y + 4 * wall, twall]);
+            }
 
-            translate([roof_x, -os.y / 2 + 0.5])
-                cube([s.x - clearance - roof_x, os.y - 1, twall]);
-
-            // Floor, actually the roof when printed
+            // Floor, actually the roof when printed with supports
+            floor_x = start ? 0 : 2 * r;
             floor_end = end ? s.x + 2 * r : s.x + r;
-            translate([floor_x, -s.y / 2 - wall, os.z - bwall])
+            translate([floor_x, -s.y / 2 - wall, os.z - bwall]) {
                 cube([floor_end - floor_x, s.y + 2 * wall, bwall]);
-
-            translate([floor_x, -os.y / 2 + 0.5,  os.z - bwall])
-                cube([s.x - floor_x - clearance, os.y -1, bwall]);
+                translate([0, -wall, 0])
+                    cube([s.x - floor_x - clearance, s.y + 4 * wall, bwall]);
+            }
 
             if(start || end) {
                 drag_chain_screw_positions(type, end)
@@ -223,16 +248,16 @@ module drag_chain_link(type, start = false, end = false, check_kids = true) { //
                 }
                 children();
             }
-        }
+        } // end union
+
         if(start || end)
             translate_z(-eps)
                 drag_chain_screw_positions(type, end)
                     rotate($a)
                         poly_cylinder(r = screw_clearance_radius(drag_chain_screw(type)), h = os.z + 2 * eps, center = false);
+    } // end difference
 
-    }
-
-    if(show_supports() && !end) {
+    if(supports && show_supports() && !end) {
         for(side = [-1, 1]) {
             w = 2.1 * extrusion_width;
             translate([s.x + r + cam_x - w / 2, side * (s.y / 2 + wall / 2), twall / 2])
@@ -255,16 +280,15 @@ module _drag_chain_assembly(type, pos = 0, render = false) {
     s = drag_chain_size(type);
     x = (1 + exploded()) * s.x;
     r = drag_chain_radius(type) * x / s.x;
-    travel = drag_chain_travel(type);
-    links = ceil(travel / s.x);
-    actual_travel = links * s.x;
+    links = drag_chain_links(type);
+    actual_travel = (links - 4) * s.x;
     z = drag_chain_outer_size(type).z;
 
     zb = z / 2;                                     // z of bottom track
     c = [actual_travel / 2 + pos / 2, 0, r + zb];   // centre of bend
 
     points = [                                      // Calculate list of hinge points
-        for(i = 0, p = [0, 0, z / 2 + 2 * r]; i < links + 5;
+        for(i = 0, p = [0, 0, z / 2 + 2 * r]; i < links + 1;
             i = i + 1,
             dx = p.z > c.z ? x : -x,
             p = max(p.x + dx, p.x) <= c.x ? p + [dx, 0, 0]      // Straight sections
@@ -277,11 +301,12 @@ module _drag_chain_assembly(type, pos = 0, render = false) {
 
     module link(n)                                  // Position and colour link with origin at the hinge hole
         translate([-z / 2, 0, -z / 2]) {
-            stl_colour(n < 0 || n == npoints - 1 ? pp3_colour : n % 2 ? pp1_colour : pp2_colour)
-                render_if(render)
-                    drag_chain_link(type, start = n == -1, end = n == npoints - 1, check_kids = false)
-                        let($fasteners = 0)
-                            children();
+            vflip(!drag_chain_supports(type))
+                stl_colour(n < 0 || n == npoints - 1 ? pp3_colour : n % 2 ? pp1_colour : pp2_colour)
+                    render_if(render)
+                        drag_chain_link(type, start = n == -1, end = n == npoints - 1, check_kids = false)
+                            let($fasteners = 0)
+                                children();
 
             let($fasteners = 1) children();
         }

printed/fan_guard.scad

@@ -17,7 +17,7 @@
 // If not, see <https://www.gnu.org/licenses/>.
 
 //
-//! Pintable fan finger guard to match the specified fan. To be `include`d, not `use`d.
+//! Printable fan finger guard to match the specified fan. To be `include`d, not `use`d.
 //!
 //! The ring spacing as well as the number of spokes can be specified, if zero a gasket is generated instead of a guard.
 //
@@ -29,7 +29,7 @@ function fan_guard_wall() = extrusion_width - layer_height / 2 + nozzle / 2 + ex
 function fan_guard_corner_r(type) = washer_diameter(screw_washer(fan_screw(type))) / 2 + 0.5; //! Corner radius of the guard
 function fan_guard_width(type) = max(2 * (fan_hole_pitch(type) + fan_guard_corner_r(type)), fan_bore(type) + 4 * fan_guard_wall()); //! Width of the guard
 
-module fan_guard(type, name = false, thickness = fan_guard_thickness(), spokes = 4, finger_width = 7, grill = false) { //! Generate the STL
+module fan_guard(type, name = false, thickness = fan_guard_thickness(), spokes = 4, finger_width = 7, grill = false, screws = true) { //! Generate the STL
     if(thickness)
         stl(name ? name : str("fan_guard_", fan_width(type)));
     hole_pitch = fan_hole_pitch(type);
@@ -54,7 +54,7 @@ module fan_guard(type, name = false, thickness = fan_guard_thickness(), spokes =
                 difference() {
                     rounded_square([width, width], r = width / 2 - hole_pitch);
 
-                    fan_holes(type, !grill, !grill, h = 0);
+                    fan_holes(type, !grill, !grill && screws, h = 0);
                 }
                 if(spokes) {
                     intersection() {

printed/fixing_block.scad

@@ -105,7 +105,8 @@ module fixing_block(screw = def_screw) { //! Generate the STL
         }
 }
 
-module fixing_block_assembly(screw = def_screw) pose([55, 180, 25], [0, 4.8, 4.8]) //! Printed part with the inserts inserted
+module fixing_block_assembly(screw = def_screw) //! Printed part with the inserts inserted
+pose([55, 180, 25], [0, 4.8, 4.8])
 assembly(str("fixing_block_M", 20 * screw_radius(screw)), ngb = true) {
     translate_z(fixing_block_height(screw))
         rotate([0, 180, 0])

printed/flat_hinge.scad

@@ -40,7 +40,7 @@ function hinge_knuckles(type)    = type[6]; //! How many knuckles
 function hinge_screw(type)       = type[7]; //! Screw type to mount it
 function hinge_screws(type)      = type[8]; //! How many screws
 function hinge_clearance(type)   = type[9]; //! Clearance between knuckles
-function hinge_margin(type)      = type[10]; //! How far to keep the screws from the knuckes
+function hinge_margin(type)      = type[10]; //! How far to keep the screws from the knuckles
 
 function flat_hinge(name, size, pin_d, knuckle_d, knuckles, screw, screws, clearance, margin) = //! Construct the property list for a flat hinge.
  [name, size.x, size.y, size.z, pin_d, knuckle_d, knuckles, screw, screws, clearance, margin];
@@ -73,7 +73,7 @@ module hinge_male(type, female = false) {       //! The half with the stationary
     assert(kr > pr, "knuckle diameter must be bigger than the pin diameter");
 
     n = hinge_knuckles(type);
-    assert(n >= 3, "must be at least three knuckes");
+    assert(n >= 3, "must be at least three knuckles");
     mn = ceil(n / 2);                           // Male knuckles
     fn = floor(n / 2);                          // Female knuckles
     gap = hinge_clearance(type);

printed/foot.scad

@@ -67,18 +67,19 @@ module foot(type = foot) { //! Generate STL
         }
 }
 
-module foot_assembly(t = 0, type = foot, flip = false) { //! Assembly with fasteners in place for specified sheet thickness
+module foot_assembly(t = 0, type = foot, flip = false, no_washer = false) { //! Assembly with fasteners in place for specified sheet thickness
     screw = foot_screw(type);
     nut = screw_nut(screw);
     squeeze = 0.5;
-    screw_length = screw_length(screw, foot_thickness(type) + t - squeeze, 2, nyloc = true);
+    screw_length = screw_length(screw, foot_thickness(type) + t - squeeze, no_washer ? 1 : 2, nyloc = true);
 
     vflip() explode(15, true) {
-        stl_colour(pp4_colour) foot(type);
+        translate_z(-squeeze)
+            stl_colour(pp4_colour) foot(type);
 
         if(t)
             explode(15, true)
-                translate_z(foot_thickness(type))
+                translate_z(foot_thickness(type) - squeeze)
                     if(flip)
                         nut_and_washer(nut, true);
                     else
@@ -87,9 +88,15 @@ module foot_assembly(t = 0, type = foot, flip = false) { //! Assembly with faste
     if(t)
         translate_z(t)
             if(flip)
-                screw_and_washer(screw, screw_length);
+                if(no_washer)
+                    screw(screw, screw_length);
+                else
+                    screw_and_washer(screw, screw_length);
             else
-                nut_and_washer(nut, true);
+                if(no_washer)
+                    nut(nut, true);
+                else
+                    nut_and_washer(nut, true);
 }
 
 module insert_foot(type = insert_foot) { //! Generate STL for foot with insert

printed/handle.scad

@@ -79,7 +79,8 @@ module handle_stl() { //! generate the STL
 //
 //! Place inserts in the bottom of the posts and push them home with a soldering iron with a conical bit heated to 200°C.
 //
-module handle_assembly() pose([225, 0, 150], [0, 0, 14]) //! Printed part with inserts in place
+module handle_assembly() //! Printed part with inserts in place
+pose([225, 0, 150], [0, 0, 14])
 assembly("handle", ngb = true) {
     translate_z(handle_height())
         stl_colour(pp1_colour) vflip() handle_stl();

printed/knob.scad

@@ -0,0 +1,171 @@
+//
+// NopSCADlib Copyright Chris Palmer 221
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// This file is part of NopSCADlib.
+//
+// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
+// GNU General Public License as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+// See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with NopSCADlib.
+// If not, see <https://www.gnu.org/licenses/>.
+//
+
+//
+//! Parametric knobs for potentiometers and encoders.
+//!
+//! A knob can be constructed by specififying all the parameters or the potentiometer can be specified to customise it for its shaft with a recess to clear the nut, washer and thread.
+//! An optional skirt and / or a pointer can be specified.
+//!
+//! The STL includes a support membrane that needs to be cut out and a thread needs to be tapped for the grub screw.
+//
+
+include <../core.scad>
+use <../utils/hanging_hole.scad>
+use <../utils/rounded_polygon.scad>
+use <../vitamins/potentiometer.scad>
+
+clearance = 0.2;
+
+function knob_name(type)     = type[0]; //! Name for the stl maker
+function knob_top_d(type)    = type[1]; //! Diameter at the top
+function knob_bot_d(type)    = type[2]; //! Diameter at the bottom
+function knob_height(type)   = type[3]; //! Height
+function knob_corner_r(type) = type[4]; //! Rounded top corner
+function knob_shaft_d(type)  = type[5]; //! Shaft diameter
+function knob_shaft_len(type)= type[6]; //! Shaft length
+function knob_flat_d(type)   = type[7]; //! The shaft diameter at the flat
+function knob_flat_h(type)   = type[8]; //! The length of the flat
+function knob_screw(type)    = type[9]; //! The grub screw type
+function knob_skirt(type)    = type[10]; //! Skirt diameter and thickness
+function knob_recess(type)   = type[11]; //! Recess diameter and thickness to clear nut and thread, diameter, nut height, thread height
+function knob_pointer(type)  = type[12]; //! Pointer outside radius, [point width, back width] and height height
+
+function knob(name = "knob", top_d = 12, bot_d = 15, height = 18, shaft_length, skirt = [20, 2], pointer = false, corner_r = 2, screw = M3_grub_screw, shaft_d, flat_d, flat_h, recess) = //! Constructor
+[
+    name, top_d, bot_d, height, corner_r, shaft_d, shaft_length, flat_d, flat_h, screw, skirt, recess, pointer
+];
+
+function knob_for_pot(pot, thickness, z = 1, washer = true, top_d = 12, bot_d = 15, height = 0, shaft_length = undef, skirt = [20, 2], pointer = false, corner_r = 2, screw = M3_grub_screw) =  //! Construct a knob to fit specified pot
+    let(s = pot_shaft(pot),
+        washer = washer && pot_washer(pot) ? pot_washer(pot) : [0, 0],
+        nut = pot_nut(pot) ? pot_nut(pot) : [pot_thread_d(pot) * cos(30), pot_thread_h(pot) - thickness],
+        shaft_length = is_undef(shaft_length) ? s.z : min(shaft_length, s.z),
+        h = round_to_layer(shaft_length + pot_thread_h(pot) - thickness - z),
+        height = max(height, h + 1),
+        recess = [(z > washer.y ? nut.x / cos(30) : washer.x) + 0.4, round_to_layer(nut.y + washer.y - z + layer_height), round_to_layer(pot_thread_h(pot) - z - thickness + 2 * layer_height)],
+        flat_d = s.y + 0.06,
+        flat_h = min(s[3], shaft_length)
+    )
+    knob(name = str(pot[0], "_knob"),
+         top_d = top_d,
+         bot_d = bot_d,
+         height = height,
+         corner_r = corner_r,
+         screw = screw,
+         skirt = skirt,
+         pointer = pointer,
+         shaft_d = s.x,
+         shaft_length = h,
+         flat_d = flat_d,
+         flat_h = flat_h,
+         recess = recess);
+
+function knob_screw_z(type) = knob_shaft_len(type) - knob_flat_h(type) / 2;
+
+module knob(type, supports = true) { //! Generate the STL for a knob
+    r_top = knob_top_d(type) / 2;
+    r_bot = knob_bot_d(type) / 2;
+    h = knob_height(type);
+    r = knob_corner_r(type);
+    screw = knob_screw(type);
+    sr = knob_shaft_d(type) / 2 + (screw ? clearance : 0);
+    top_wall = h - knob_shaft_len(type);
+    fr = knob_flat_d(type) - sr + 2 * clearance;
+    fh = knob_flat_h(type);
+    skirt = knob_skirt(type);
+    recess = knob_recess(type);
+    pointer = knob_pointer(type);
+
+    stl(knob_name(type))
+    {
+        difference() {
+            union() {
+                rotate_extrude() {
+                    rounded_polygon([
+                        [0, h, 0],
+                        [r_top - r, h - r, r],
+                        [r_bot, 0, 0],
+                        [0, 0, 0],
+                    ]);
+
+                    if(skirt)
+                        square([skirt.x / 2, skirt.y]);
+                }
+                if(pointer)
+                    linear_extrude(pointer.z)
+                        rotate(-90)
+                            hull() {
+                                translate([pointer.x, 0])
+                                    square([eps, pointer.y[0]], center = true);
+
+                                translate([r_bot, 0])
+                                    square([eps, pointer.y[1]], center = true);
+                            }
+            }
+            shaft_z = recess ? recess.z + (supports ? layer_height : -eps) : -eps;
+            translate_z(shaft_z) {
+                h = h - top_wall - shaft_z;
+                linear_extrude(h)
+                    difference() {
+                        poly_circle(sr);
+
+                        if(fr > 0)
+                            translate([-sr, fr])
+                                square([2 * sr, sr]);
+                    }
+
+                if(h > fh)
+                    poly_cylinder(sr, round_to_layer(h - fh), center = false);
+            }
+
+            if(recess)
+                translate_z(-eps)
+                    hull() {
+                        poly_cylinder(r = recess.x / 2, h = recess.y + eps, center = false);
+
+                        linear_extrude(recess.z + eps)
+                            offset(min(-(recess.z - recess.y), 0))
+                                poly_circle(recess.x / 2);
+                    }
+
+            if(screw)
+                translate_z(knob_screw_z(type))
+                    rotate([90, 0, 180])
+                        teardrop_plus(r = screw_pilot_hole(screw), h = max(r_top, r_bot) + eps, center = false);
+        }
+    }
+}
+
+//! Knob with grub screw in place
+module knob_assembly(type) explode(40, explode_children = true) { //! Assembly with the grub screw in place
+    sr = knob_shaft_d(type) / 2;
+    fr = knob_flat_d(type) < sr ? knob_flat_d(type) - sr : sr;
+    r_top = knob_top_d(type) / 2;
+    r_bot = knob_bot_d(type) / 2;
+    screw_length = screw_shorter_than(min(r_top, r_bot) - fr);
+    screw = knob_screw(type);
+
+    stl_colour(pp1_colour) render() knob(type, supports = false);
+
+    if(screw)
+        translate([0, (fr + screw_length), knob_screw_z(type)])
+            rotate([90, 0, 180])
+                screw(screw, screw_length);
+}

printed/press_fit.scad

@@ -22,7 +22,7 @@
 //!
 //! Add solvent or glue to make a permanent fixture.
 //
-include <../core.scad>
+include <../utils/core/core.scad>
 
 interference = 0.0;
 

printed/printed_box.scad

@@ -26,7 +26,9 @@
 //!
 //! It can also have printed feet on the base with the screws doubling up to hold the base on.
 //
-include <../core.scad>
+include <../utils/core/core.scad>
+use <../vitamins/screw.scad>
+use <../vitamins/washer.scad>
 use <../vitamins/insert.scad>
 use <foot.scad>
 

printed/printed_pulleys.scad

@@ -21,8 +21,8 @@
 //! Creative Commons - Attribution - Share Alike license (see <https://creativecommons.org/licenses/by-sa/3.0/>)
 //
 
-include <../core.scad>
-include <../vitamins/pulleys.scad>
+include <../utils/core/core.scad>
+use <../vitamins/pulley.scad>
 
 printed_pulley_GT2_profile = [[0.747183,-0.5],[0.747183,0],[0.647876,0.037218],[0.598311,0.130528],[0.578556,0.238423],[0.547158,0.343077],[0.504649,0.443762],[0.451556,0.53975],[0.358229,0.636924],[0.2484,0.707276],[0.127259,0.750044],[0,0.76447],[-0.127259,0.750044],[-0.2484,0.707276],[-0.358229,0.636924],[-0.451556,0.53975],[-0.504797,0.443762],[-0.547291,0.343077],[-0.578605,0.238423],[-0.598311,0.130528],[-0.648009,0.037218],[-0.747183,0],[-0.747183,-0.5]];
 

printed/psu_shroud.scad

@@ -41,6 +41,7 @@ overlap = 6;
 cable_tie_inset = wall + 4;
 
 function psu_shroud_extent(type) = 15 + wall;                                   //! How far it extends beyond the PSU to clear the connections
+function psu_shroud_wall(type) = wall;                                          //! The wall thickness
 function psu_shroud_depth(type) =                                               //! Outside depth of the shroud
     psu_left_bay(type) + overlap + psu_shroud_extent(type);
 
@@ -154,7 +155,7 @@ assembly(str("PSU_shroud_", name), ngb = true) {
             insert(insert);
 }
 
-module psu_shroud_fastened_assembly(type, cable_d, thickness, name, cables = 1) //! Assembly with screws in place
+module psu_shroud_fastened_assembly(type, cable_d, thickness, name, cables = 1, screw = screw) //! Assembly with screws in place
 {
     screw_length = screw_length(screw,thickness + counter_bore, 2, true);
 

printed/ribbon_clamp.scad

@@ -81,8 +81,9 @@ module ribbon_clamp(ways, screw = screw) { //! Generate STL for given number of
         }
 }
 
-module ribbon_clamp_assembly(ways, screw = screw) pose([55, 180, 25])  //! Printed part with inserts in place
-    assembly(let(screw_d = screw_radius(screw) * 2)str("ribbon_clamp_", ways, screw_d != 3 ? str("_", screw_d) : ""), ngb = true) {
+module ribbon_clamp_assembly(ways, screw = screw)  //! Printed part with inserts in place
+pose([55, 180, 25])
+assembly(let(screw_d = screw_radius(screw) * 2)str("ribbon_clamp_", ways, screw_d != 3 ? str("_", screw_d) : ""), ngb = true) {
     h = ribbon_clamp_height(screw);
     insert = screw_insert(screw);
 

scripts/blurb.py

@@ -81,7 +81,7 @@ def scrape_code(scad_file):
             match = re.match(r'^function (.*?\(.*?\)).*?(?://! ?(.*))$', line)
             if match:
                 functions[match.group(1)] = match.group(2)
-        match = re.match(r'^module (.*?\(.*?\)).*?(?://! ?(.*))$', line)
+        match = re.match(r'^module (.*?\(.*\)).*?(?://! ?(.*))$', line)
         if match:
             modules[match.group(1)] = match.group(2)
 

scripts/bom.py

@@ -31,6 +31,12 @@ from set_config import *
 import json
 import re
 
+try:
+    import parts
+    got_parts_py = True
+except:
+    got_parts_py = False
+
 def find_scad_file(mname):
     for filename in os.listdir(source_dir):
         if filename[-5:] == ".scad":
@@ -46,6 +52,18 @@ def find_scad_file(mname):
                             return filename
     return None
 
+def main_assembly(target):
+    file = None
+    if target:
+        assembly = target + "_assembly"
+        file = find_scad_file(assembly)
+    if not file:
+        assembly = "main_assembly"
+        file = find_scad_file(assembly)
+    if not file:
+        raise Exception("can't find source for " + assembly)
+    return assembly, file
+
 class Part:
     def __init__(self, args):
         self.count = 1
@@ -117,6 +135,33 @@ class BOM:
             return ass
         return ass.replace("assembly", "assemblies")
 
+    def print_CSV(self,  file = None):
+        i = 0
+        for part in sorted(self.vitamins):
+            i += 1
+            if ': ' in part:
+                part_no, description = part.split(': ')
+            else:
+                part_no, description = "", part
+            qty = self.vitamins[part].count
+            if got_parts_py:
+                match = re.match(r'^.*\((.*?)[,\)].*$', part_no)
+                if match and not match.group(1).startswith('"'):
+                    part_no = part_no.replace('(' + match.group(1), '_' + match.group(1) + '(').replace('(, ', '(')
+                func = 'parts.' + part_no.replace('(', '(%d, ' % qty).replace(', )', ')')
+                func = func.replace('true',  'True').replace('false', 'False').replace('undef', 'None')
+                try:
+                    price, url = eval(func)
+                    print("'%s',%3d,%.2f,'=B%d*C%d',%s" % (description, qty, price, i, i, url), file=file)
+                except:
+                    if part_no:
+                        print("%s not found in parts.py" % func)
+                    print("'%s',%3d" % (description, qty), file=file)
+            else:
+                print("'%s',%3d" % (description, qty), file=file)
+        if got_parts_py:
+            print(",'=SUM(B1:B%d)',,'=SUM(D1:D%d)'" %(i, i), file=file)
+
     def print_bom(self, breakdown, file = None):
         if self.vitamins:
             print("Vitamins:", file=file)
@@ -221,28 +266,20 @@ def parse_bom(file = "openscad.log", name = None):
     return main
 
 def usage():
-    print("\nusage:\n\tbom [target_config] [<accessory_name>_assembly] - Generate BOMs for a project or an accessory to a project.")
+    print("\nusage:\n\tbom [target_config] - Generate BOMs for a project.")
     sys.exit(1)
 
-def boms(target = None, assembly = None):
+def boms(target = None):
     try:
         bom_dir = set_config(target, usage) + "bom"
-        if assembly:
-            bom_dir += "/accessories"
-            if not os.path.isdir(bom_dir):
-                os.makedirs(bom_dir)
-        else:
-            assembly = "main_assembly"
-            if os.path.isdir(bom_dir):
-                shutil.rmtree(bom_dir)
-                sleep(0.1)
-            os.makedirs(bom_dir)
+        if os.path.isdir(bom_dir):
+            shutil.rmtree(bom_dir)
+            sleep(0.1)
+        os.makedirs(bom_dir)
         #
-        # Find the scad file that makes the module
+        # Find the scad file that makes the main assembly
         #
-        scad_file = find_scad_file(assembly)
-        if not scad_file:
-            raise Exception("can't find source for " + assembly)
+        assembly, scad_file = main_assembly(target)
         #
         # make a file to use the module
         #
@@ -259,8 +296,9 @@ def boms(target = None, assembly = None):
 
         main = parse_bom("openscad.echo", assembly)
 
-        if assembly == "main_assembly":
-            main.print_bom(True, open(bom_dir + "/bom.txt","wt"))
+        main.print_bom(True, open(bom_dir + "/bom.txt","wt"))
+
+        main.print_CSV(open(bom_dir + "/bom.csv","wt"))
 
         for ass in main.assemblies:
             with open(bom_dir + "/" + ass + ".txt", "wt") as f:
@@ -278,20 +316,8 @@ def boms(target = None, assembly = None):
         sys.exit(1)
 
 if __name__ == '__main__':
-    if len(sys.argv) > 3: usage()
+    if len(sys.argv) > 2: usage()
 
-    if len(sys.argv) == 3:
-        target, assembly = sys.argv[1], sys.argv[2]
-    else:
-        if len(sys.argv) == 2:
-            if sys.argv[1][-9:] == "_assembly":
-                target, assembly = None, sys.argv[1]
-            else:
-                target, assembly = sys.argv[1], None
-        else:
-            target, assembly = None, None
+    target = sys.argv[1] if len(sys.argv) == 2 else None
 
-    if assembly:
-        if assembly[-9:] != "_assembly": usage()
-
-    boms(target, assembly)
+    boms(target)

scripts/changelog.py

@@ -24,6 +24,7 @@ from __future__ import print_function
 import sys
 import subprocess
 import re
+from tests import do_cmd
 
 filename = 'CHANGELOG.md'
 
@@ -81,6 +82,7 @@ def codify(word, url):
 
 
 def fixup_comment(comment, url):
+    comment = comment.replace('cnc_bit+_r', 'cnc_bit_r')
     """ markup code words and fix new paragraphs """
     result = ''
     word = ''
@@ -160,5 +162,6 @@ if __name__ == '__main__':
 
             # Print commits excluding merges
 
-            if not c.comment.startswith('Merge branch') and not c.comment.startswith('Merge pull') and not re.match(r'U..ated changelog.*', c.comment):
+            if not c.comment.startswith('Merge branch') and not c.comment.startswith('Merge pull') and not re.match(r'U..ated chang.*log.*', c.comment):
                 print('* %s [`%s`](%s "show commit") %s %s\n' % (c.date, c.hash[:7], url + '/commit/' + c.hash, initials(c.author), fixup_comment(c.comment, url)), file = file)
+    do_cmd(('codespell -w -L od ' + filename).split())

scripts/exports.py

@@ -139,6 +139,7 @@ def make_parts(target, part_type, parts = None):
                                             #
                                             part_maker_name = tmp_dir + '/' + part_type + ".scad"
                                             with open(part_maker_name, "w") as f:
+                                                f.write("include <NopSCADlib/global_defs.scad>\n")
                                                 f.write("use <%s/%s>\n" % (reltmp(dir, target), filename))
                                                 f.write("%s();\n" % module);
                                             t = time.time()

scripts/options.py

@@ -17,7 +17,7 @@
 # If not, see <https://www.gnu.org/licenses/>.
 #
 
-# Set command line options from enviroment variables and check if they have changed
+# Set command line options from environment variables and check if they have changed
 
 import json, os, deps
 from colorama import Fore, init

scripts/render.py

@@ -94,11 +94,13 @@ def render(target, type):
             cam = "--camera=0,0,0,70,0,315,500" if type == 'stl' else "--camera=0,0,0,0,0,0,500"
             render = "--preview" if type == 'stl' or colour != pp1 else "--render"
             tmp_name = tmp_dir + '/' + part[:-4] + '.png'
-            openscad.run("-o", tmp_name, png_maker_name, colour_scheme, "--projection=p", "--imgsize=4096,4096", cam, render, "--autocenter", "--viewall");
+            dummy_deps_name = tmp_dir + '/tmp.deps' # work around for OpenSCAD issue #3879
+            openscad.run("-o", tmp_name, png_maker_name, colour_scheme, "--projection=p", "--imgsize=4096,4096", cam, render, "--autocenter", "--viewall", "-d", dummy_deps_name)
             do_cmd(("magick "+ tmp_name + " -trim -resize 280x280 -background %s -gravity Center -extent 280x280 -bordercolor %s -border 10 %s"
                     % (background, background, tmp_name)).split())
             update_image(tmp_name, png_name)
             os.remove(png_maker_name)
+            os.remove(dummy_deps_name)
     #
     # Remove tmp dir
     #

scripts/tests.py

@@ -72,6 +72,8 @@ def update_image(tmp_name, png_name):
     if pixels < 0 or pixels > threshold:
         shutil.copyfile(tmp_name, png_name)
         print(Fore.YELLOW + png_name + " updated" + Fore.WHITE, pixels if pixels > 0 else '')
+        if png_name.endswith('_tn.png') and os.path.isfile(diff_name):
+            os.remove(diff_name)
     else:
         os.utime(png_name, None)
         os.remove(diff_name)

scripts/tmpdir.py

@@ -25,6 +25,7 @@ import time
 def mktmpdir(top_dir):
     tmp_dir = top_dir + 'tmp'
     if not os.path.isdir(tmp_dir):
+        time.sleep(0.1)
         os.makedirs(tmp_dir)
     else:
         for file in os.listdir(tmp_dir):

scripts/views.py

@@ -77,12 +77,12 @@ def bom_to_assemblies(bom_dir, bounds_map):
     #
     if flat_bom:
         ass = flat_bom[-1]
-        if len(ass["assemblies"]) < 2 and not ass["vitamins"] and not ass["printed"] and not ass["routed"]:
+        if len(ass["assemblies"]) == 1 and not ass["vitamins"] and not ass["printed"] and not ass["routed"]:
             flat_bom = flat_bom[:-1]
     return [assembly["name"] for  assembly in flat_bom]
 
 def eop(doc_file, last = False, first = False):
-    print('<span></span>', file = doc_file)     # An invisable marker for page breaks because markdown takes much longer if the document contains a div
+    print('<span></span>', file = doc_file)     # An invisible marker for page breaks because markdown takes much longer if the document contains a div
     if not first:
         print('[Top](#TOP)', file = doc_file)
     if not last:
@@ -161,6 +161,7 @@ def views(target, do_assemblies = None):
     # Find all the scad files
     #
     main_blurb = None
+    main_assembly, main_file = bom.main_assembly(target)
     pngs = []
     for dir in source_dirs(bom_dir):
         if os.path.isdir(dir):
@@ -215,6 +216,7 @@ def views(target, do_assemblies = None):
                                                 #
                                                 png_maker_name = tmp_dir + '/png.scad'
                                                 with open(png_maker_name, "w") as f:
+                                                    f.write("include <NopSCADlib/global_defs.scad>\n")
                                                     f.write("use <%s/%s>\n" % (reltmp(dir, target), filename))
                                                     f.write("%s();\n" % module);
                                                 t = time.time()
@@ -232,7 +234,7 @@ def views(target, do_assemblies = None):
                                                 update_image(tmp_name, tn_name)
                                     done_assemblies.append(real_name)
                                 else:
-                                    if module == 'main_assembly':
+                                    if module == main_assembly:
                                         main_blurb = blurb.scrape_module_blurb(lines[:line_no])
                         line_no += 1
     #
@@ -246,9 +248,6 @@ def views(target, do_assemblies = None):
         project = ' '.join(word[0].upper() + word[1:] for word in os.path.basename(os.getcwd()).split('_'))
         print('<a name="TOP"></a>', file = doc_file)
         print('# %s' % project, file = doc_file)
-        main_file = bom.find_scad_file('main_assembly')
-        if not main_file:
-            raise Exception("can't find source for main_assembly")
         text = blurb.scrape_blurb(source_dir + '/' + main_file)
         blurbs = blurb.split_blurb(text)
         if len(text):

tests/7_segments.scad

@@ -0,0 +1,31 @@
+//
+// NopSCADlib Copyright Chris Palmer 2021
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// This file is part of NopSCADlib.
+//
+// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
+// GNU General Public License as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+// See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with NopSCADlib.
+// If not, see <https://www.gnu.org/licenses/>.
+//
+include <../utils/core/core.scad>
+use <../utils/layout.scad>
+
+include <../vitamins/7_segments.scad>
+
+function digits(s) = 7_segment_digits(s) < 2 ? 2 : 1;
+
+module 7_segments()
+    layout([for(s = 7_segments) 7_segment_size(s).x * digits(s)], 3) let(s = 7_segments[$i])
+        7_segment_digits(s, digits(s));
+
+if($preview)
+    7_segments();

tests/BLDC_motors.scad

@@ -0,0 +1,31 @@
+//
+// NopSCADlib Copyright Chris Palmer 2021
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// This file is part of NopSCADlib.
+//
+// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
+// GNU General Public License as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+// See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with NopSCADlib.
+// If not, see <https://www.gnu.org/licenses/>.
+//
+include <../core.scad>
+use <../utils/layout.scad>
+
+include <../vitamins/bldc_motors.scad>
+
+module bldc_motors()
+    layout([for(b = bldc_motors) BLDC_diameter(b)])
+        rotate(-90)
+            BLDC(bldc_motors[$i]);
+
+if($preview)
+    let($show_threads = 1)
+        bldc_motors();

tests/BOM.scad

@@ -20,10 +20,10 @@
 //
 //! BOM and assembly demonstration
 //
+$explode = 1; // Normally set on the command line when generating assembly views with views.py
 include <../core.scad>
 include <../vitamins/sheets.scad>
 use <../vitamins/insert.scad>
-$explode = 1; // Normally set on the command line when generating assembly views with views.py
 
 screw = M3_cap_screw;
 sheet = PMMA3;

tests/DIP.scad

@@ -16,7 +16,7 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
-include <../core.scad>
+include <../utils/core/core.scad>
 use <../vitamins/dip.scad>
 
 dips = [[6, "OPTO"], [8, "NE555"], [14, "74HC00"], [16, "ULN2003"], [18, "ULN2803"], [20, "74HC245"], [28, "ATMEGA328"]];

tests/LDRs.scad

@@ -16,6 +16,7 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
+include <../utils/core/core.scad>
 include <../vitamins/ldrs.scad>
 
 use <../utils/layout.scad>

tests/PCB.scad

@@ -22,6 +22,8 @@ include <../vitamins/d_connectors.scad>
 include <../vitamins/leds.scad>
 include <../vitamins/axials.scad>
 include <../vitamins/smds.scad>
+include <../vitamins/7_segments.scad>
+include <../vitamins/potentiometers.scad>
 
 use <../vitamins/pcb.scad>
 
@@ -46,7 +48,7 @@ TMC2130 = ["TMC2130", "TMC2130",
     []
 ];
 
-test_pcb = ["TestPCB", "Test PCB",
+test_pcb = ["test_pcb", "Test PCB",
     100, 250, 1.6, // length, width, thickness
     3,      // Corner radius
     2.75,   // Mounting hole diameter
@@ -64,21 +66,25 @@ test_pcb = ["TestPCB", "Test PCB",
         [ 16,  2,   90, "smd_res", RES1206, "1K"],
         [ 19,  2,   90, "smd_res", RES0805, "1K"],
         [ 22,  2,   90, "smd_res", RES0603, "1K"],
+        [ 25,  2,   90, "smd_cap", CAP1206, 1.5],
+        [ 28,  2,   90, "smd_cap", CAP0805, 1.0],
+        [ 31,  2,   90, "smd_cap", CAP0603, 0.7],
+
         [ 10,  10,   0, "2p54header", 4, 1],
         [ 25,  10,   0, "2p54header", 5, 1, false, "blue" ],
         [ 10,  20,   0, "2p54boxhdr", 4, 2],
         [ 10,  30,   0, "2p54socket", 6, 1],
         [ 25,  30,   0, "2p54socket", 4, 1, false, 0, false, "red" ],
-        [ 10,  40,   0, "chip", 10, 5, 1, grey(20)],
-        [  5,  50,   0, "led", LED3mm, "red"],
-        [ 12,  50,   0, "led", LED5mm, "orange"],
-        [ 25,  50,   0, "led", LED10mm, "yellow"],
-        [ 10,  65, 180, "rj45"],
-        [  8,  85, 180, "usb_A"],
+        [ 65,  50,   0, "led", LED3mm, "red"],
+        [ 75,  50,   0, "led", LED5mm, "orange"],
+        [ 90,  50,   0, "led", LED10mm, "yellow"],
+        [ 10,  45, 180, "rj45"],
+        [  8,  65, 180, "usb_A"],
         [  8, 105, 180, "usb_Ax2"],
+        [  7,  85, 180, "molex_usb_Ax1"],
+        [ 8.5,125, 180, "molex_usb_Ax2"],
         [  3, 140, 180, "usb_uA"],
         [  8, 155, 180, "usb_B"],
-        [  8.5, 125, 180, "molex_usb_Ax2"],
         [ 25, 200,   0, "buzzer", 4.5, 8.5],
         [ 25, 218,   0, "buzzer"],
         [  8, 190, 180, "jack"],
@@ -91,6 +97,8 @@ test_pcb = ["TestPCB", "Test PCB",
         [ 65,  12,   0, "ax_res", res1_8, 1000],
         [ 65,  17,   0, "ax_res", res1_4, 10000],
         [ 65,  22,   0, "ax_res", res1_2, 100000],
+        [ 55,  22,   0, "vero_pin"],
+        [ 55,  17,   0, "vero_pin", true],
 
         [ 80,   9,   0, "link", inch(0.2), inch(0.4)],
         [ 80,  12,   0, "ax_res", res1_8, 1000000, 1, inch(0.1)],
@@ -127,11 +135,14 @@ test_pcb = ["TestPCB", "Test PCB",
         [ 52, 200,   0, "pcb", 11, TMC2130 ],
         [ 80, 200,   0, "pdip", 24, "27C32", true, inch(0.6) ],
         [ 80, 170,   0, "pdip", 8, "NE555" ],
+        [ 80, 150,   0, "chip", 10, 5, 1, grey(20)],
+
         [ 52, 206,   0, "2p54socket", 8, 1 ],
         [ 52, 194,   0, "2p54socket", 8, 1, false, 0, false, "red" ],
         [ 50, 220,   0, "standoff",  5, 4.5, 12.5, 2.54],
         [ 50, 240,   0, "potentiometer"],
-        [ 75, 240,   0, "potentiometer", 7, 8],
+        [ 75, 240,   0, "potentiometer", KY_040_encoder, 8],
+        [ 30,  85,   -90, "7seg", WT5011BSR, 2],
     ],
     // accessories
     []

tests/PCBs.scad

@@ -21,7 +21,7 @@ include <../vitamins/pcbs.scad>
 
 use <../utils/layout.scad>
 
-function spacing(p) = let(w = pcb_width(p)) w < 22 ? w + 3 : w + 10;
+function spacing(p) = let(w = pcb_width(p)) w < 22 ? w + 3 : w + 7;
 
 module pcbs() {
     layout([for(p = pcbs) spacing(p)], 0)
@@ -29,7 +29,12 @@ module pcbs() {
             rotate(90)
                 pcb_assembly(pcbs[$i], 5 + $i, 3);
 
-    translate([0, 110])
+    translate([0, 65])
+        layout([for(p = tiny_pcbs) pcb_length(p)], 3)
+            translate([0, -pcb_width(tiny_pcbs[$i]) / 2])
+                 pcb_assembly(tiny_pcbs[$i], 5 + $i, 3);
+
+    translate([0, 120])
         layout([for(p = perfboards) pcb_length(p)], 10)
             translate([0, -pcb_width(perfboards[$i]) / 2])
                 pcb_assembly(perfboards[$i], 5 + $i, 3);

tests/PSUs.scad

@@ -16,20 +16,32 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
+show_cutout = false;
+
 include <../core.scad>
 include <../vitamins/psus.scad>
 
 use <../utils/layout.scad>
 
+
+
 module psus()
-    layout([for(p = psus) psu_width(p)], 10) let(p = psus[$i])
+    layout([for(p = psus) atx_psu(p) ? psu_length(p) : psu_width(p)], 10) let(p = psus[$i])
     rotate(atx_psu(p) ? 0 : 90) {
         psu(p);
 
         psu_screw_positions(p)
             translate_z(3)
                 screw_and_washer(psu_screw(p), 8);
+
+        if(show_cutout && atx_psu(p))
+            #atx_psu_cutout(p);
     }
 
-if($preview)
+if($preview) {
     psus();
+
+    for(p = psus_not_shown)
+        hidden()
+            psu(p);
+}

tests/SK_brackets.scad

@@ -22,18 +22,20 @@ include <../vitamins/extrusions.scad>
 
 use <../utils/layout.scad>
 
-module sk_brackets() {
+module sk_brackets(examples = false) {
     screws = [M4_dome_screw, M4_cap_screw, M5_cap_screw, M5_cap_screw];
     nuts = [M4_hammer_nut, M4_sliding_t_nut, M5_sliding_t_nut, undef];
     // channel depth = 6 for 2020 extrusion, 9 for 3030 extrusion
     depths = [6, 6, 9, 0];
     layout([for(s = sk_brackets) 1.5 * sk_size(s)[1]]) {
         sk_bracket_assembly(sk_brackets[$i], screw_type = screws[$i], nut_type = nuts[$i], max_screw_depth = depths[$i]);
-        translate([0, -sk_hole_offset(sk_brackets[$i]) - extrusion_width($i < 2 ? E2020 : E3030) / 2, 0])
-            rotate([0, 90, 0])
-                extrusion($i < 2 ? E2020 : E3030, 20, false);
+
+        if(examples)
+            translate([0, -sk_hole_offset(sk_brackets[$i]) - extrusion_width($i < 2 ? E2020 : E3030) / 2, 0])
+                rotate([0, 90, 0])
+                    extrusion($i < 2 ? E2020 : E3030, 20, false);
     }
 }
 
 if($preview)
-    sk_brackets();
+    sk_brackets(true);

tests/SMDs.scad

@@ -28,6 +28,11 @@ module smds() {
     translate([0, 3])
         layout([for(l = smd_leds) smd_led_size(l).x], 1)
             smd_led(smd_leds[$i], ["green", "blue", "red"][$i % 3]);
+
+    translate([0, 6])
+        layout([for(c = smd_capacitors) smd_cap_size(c).x], 1)
+            let(c = smd_capacitors[$i])
+                smd_capacitor(c, smd_cap_size(c).y * 0.8);
 }
 
 if($preview)

tests/SSR_shroud.scad

@@ -16,7 +16,7 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
-include <../core.scad>
+include <../utils/core/core.scad>
 include <../vitamins/ssrs.scad>
 
 use <../utils/layout.scad>

tests/ball_bearings.scad

@@ -16,7 +16,7 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
-
+include <../utils/core/core.scad>
 use <../utils/layout.scad>
 
 include <../vitamins/ball_bearings.scad>

tests/camera_housing.scad

@@ -16,7 +16,7 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
-include <../core.scad>
+include <../utils/core/core.scad>
 use <../utils/layout.scad>
 
 use <../printed/camera_housing.scad>

tests/components.scad

@@ -42,6 +42,9 @@ module components() {
         TO220("Generic TO220 package");
 
     translate([40, 50])
+        TO247("Generic TO247 package");
+
+    translate([40, 80])
         panel_USBA();
 
     translate([80, 50])

tests/core_xy.scad

@@ -19,7 +19,6 @@
 
 include <../core.scad>
 include <../vitamins/pulleys.scad>
-include <../vitamins/screws.scad>
 include <../vitamins/stepper_motors.scad>
 include <../vitamins/washers.scad>
 
@@ -31,22 +30,25 @@ module coreXY_belts_test() {
     plain_idler = coreXY_plain_idler(coreXY_type);
     toothed_idler = coreXY_toothed_idler(coreXY_type);
 
+    pos = [100, 50];
     coreXYPosBL = [0, 0, 0];
     coreXYPosTR = [200, 150, 0];
     separation = [0, coreXY_coincident_separation(coreXY_type).y, pulley_height(plain_idler) + washer_thickness(M3_washer)];
-    pos = [100, 50];
+    x_gap = 10;
 
-    upper_drive_pulley_offset = [40, 10];
+    plain_idler_offset = [10, 5];
+    upper_drive_pulley_offset = [40, 0];
     lower_drive_pulley_offset = [0, 0];
 
     coreXY_belts(coreXY_type,
-        carriagePosition = pos,
-        coreXYPosBL = coreXYPosBL,
-        coreXYPosTR = coreXYPosTR,
-        separation = separation,
-        x_gap = 10,
-        upper_drive_pulley_offset = upper_drive_pulley_offset,
-        lower_drive_pulley_offset = lower_drive_pulley_offset,
+        pos,
+        coreXYPosBL,
+        coreXYPosTR,
+        separation,
+        x_gap,
+        plain_idler_offset,
+        upper_drive_pulley_offset,
+        lower_drive_pulley_offset,
         show_pulleys = true);
 
 
@@ -57,18 +59,18 @@ module coreXY_belts_test() {
 
         // add the screws for the upper drive offset idler pulleys if required
         if (upper_drive_pulley_offset.x > 0) {
-            translate(coreXY_drive_plain_idler_offset(coreXY_type))
-                translate_z(-pulley_offset(plain_idler))
+            translate(coreXY_drive_plain_idler_offset(coreXY_type) + plain_idler_offset)
+                translate([0, -upper_drive_pulley_offset.y, -pulley_offset(plain_idler)])
                     screw(M3_cap_screw, 20);
             translate(coreXY_drive_toothed_idler_offset(coreXY_type))
-                translate_z(-pulley_offset(toothed_idler))
+                translate([0, -upper_drive_pulley_offset.y, -pulley_offset(toothed_idler)])
                     screw(M3_cap_screw, 20);
          } else if (upper_drive_pulley_offset.x < 0) {
-            translate([-pulley_od(plain_idler), coreXY_drive_plain_idler_offset(coreXY_type).y])
-                translate_z(-pulley_offset(plain_idler))
+            translate([-pulley_od(plain_idler), coreXY_drive_plain_idler_offset(coreXY_type).y + plain_idler_offset.y])
+                translate([0, -upper_drive_pulley_offset.y, -pulley_offset(plain_idler)])
                     screw(M3_cap_screw, 20);
-            translate([2*coreXY_drive_pulley_x_alignment(coreXY_type), coreXY_drive_toothed_idler_offset(coreXY_type).y])
-                translate_z(-pulley_offset(toothed_idler))
+            translate([2*coreXY_drive_pulley_x_alignment(coreXY_type) + plain_idler_offset.x, coreXY_drive_toothed_idler_offset(coreXY_type).y])
+                translate([0, -upper_drive_pulley_offset.y, -pulley_offset(toothed_idler)])
                     screw(M3_cap_screw, 20);
         }
     }
@@ -80,18 +82,18 @@ module coreXY_belts_test() {
 
         // add the screws for the lower drive offset idler pulleys if required
         if (lower_drive_pulley_offset.x < 0) {
-            translate([-coreXY_drive_plain_idler_offset(coreXY_type).x, coreXY_drive_plain_idler_offset(coreXY_type).y])
-                translate_z(-pulley_offset(plain_idler))
+            translate([-coreXY_drive_plain_idler_offset(coreXY_type).x - plain_idler_offset.x, coreXY_drive_plain_idler_offset(coreXY_type).y + plain_idler_offset.y])
+                translate([0, -lower_drive_pulley_offset.y, -pulley_offset(plain_idler)])
                     screw(M3_cap_screw, 20);
             translate(coreXY_drive_toothed_idler_offset(coreXY_type))
-                translate_z(-pulley_offset(toothed_idler))
+                translate([0, -lower_drive_pulley_offset.y, -pulley_offset(toothed_idler)])
                     screw(M3_cap_screw, 20);
         } else if (lower_drive_pulley_offset.x > 0) {
-            translate([pulley_od(plain_idler), coreXY_drive_plain_idler_offset(coreXY_type).y])
-                translate_z(-pulley_offset(plain_idler))
+            translate([pulley_od(plain_idler), coreXY_drive_plain_idler_offset(coreXY_type).y + plain_idler_offset.y])
+                translate([0, -lower_drive_pulley_offset.y, -pulley_offset(plain_idler)])
                     screw(M3_cap_screw, 20);
-            translate([-2*coreXY_drive_pulley_x_alignment(coreXY_type), coreXY_drive_toothed_idler_offset(coreXY_type).y])
-                translate_z(-pulley_offset(toothed_idler))
+            translate([-2*coreXY_drive_pulley_x_alignment(coreXY_type) - plain_idler_offset.x, coreXY_drive_toothed_idler_offset(coreXY_type).y])
+                translate([0, -lower_drive_pulley_offset.y, -pulley_offset(toothed_idler)])
                     screw(M3_cap_screw, 20);
         }
     }
@@ -119,13 +121,13 @@ module coreXY_belts_test() {
         translate([coreXYPosBL.x, coreXY_toothed_idler_offset(coreXY_type).y, 0])
             screw(M3_cap_screw, 20);
         // add the screw for the left Y carriage plain idler
-        translate([coreXYPosBL.x + separation.x + coreXY_plain_idler_offset(coreXY_type).x, separation.y + coreXY_plain_idler_offset(coreXY_type).y, separation.z])
+        translate([coreXYPosBL.x + separation.x + coreXY_plain_idler_offset(coreXY_type).x + (upper_drive_pulley_offset.x == 0 ? 0 : plain_idler_offset.x), separation.y + coreXY_plain_idler_offset(coreXY_type).y, separation.z])
             screw(M3_cap_screw, 20);
         // add the screw for the right Y carriage toothed idler
         translate([coreXYPosTR.x + separation.x, coreXY_toothed_idler_offset(coreXY_type).y, separation.z])
             screw(M3_cap_screw, 20);
         // add the screw for the right Y carriage plain idler
-        translate([coreXYPosTR.x - coreXY_plain_idler_offset(coreXY_type).x, separation.y + coreXY_plain_idler_offset(coreXY_type).y, 0])
+        translate([coreXYPosTR.x - coreXY_plain_idler_offset(coreXY_type).x - (lower_drive_pulley_offset.x == 0 ? 0 : plain_idler_offset.x), separation.y + coreXY_plain_idler_offset(coreXY_type).y, 0])
             screw(M3_cap_screw, 20);
     }
 }

tests/displays.scad

@@ -16,6 +16,7 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
+include <../core.scad>
 use <../utils/layout.scad>
 
 include <../vitamins/displays.scad>
@@ -23,7 +24,10 @@ use <../vitamins/pcb.scad>
 
 module displays()
     layout([for(d = displays) pcb_length(display_pcb(d))], 10)
-        display(displays[$i]);
+        translate([0, pcb_width(displays[$i]) / 2])
+            vflip()
+                display(displays[$i]);
 
 if($preview)
-    displays();
+    let($show_threads = true)
+        displays();

tests/extrusion_brackets.scad

@@ -16,13 +16,51 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
-include <../utils/core/core.scad>
+include <../core.scad>
 
-include <../vitamins/extrusion_brackets.scad>
 include <../vitamins/extrusions.scad>
+include <../vitamins/extrusion_brackets.scad>
 include <../vitamins/washers.scad>
 include <../vitamins/nuts.scad>
 
+module inner_bracket_test(bracket, backwards = false)
+    rotate([90, 0, 180]) {
+        extrusion = extrusion_inner_corner_bracket_extrusion(bracket);
+        eWidth = extrusion_width(extrusion);
+        size = extrusion_inner_corner_bracket_size(bracket);
+        tnut = extrusion_inner_corner_bracket_tnut(bracket);
+
+        translate([backwards ? -eWidth : 0, 0])
+            extrusion_inner_corner_bracket(bracket, backwards = backwards);
+
+        translate([-eWidth / 2, 0])
+            rotate([-90, 0, 0])
+                extrusion(extrusion, size.x - nut_thickness(tnut) - extrusion_tab_thickness(extrusion), false, cornerHole = eWidth > 20);
+
+        translate([-eWidth, -eWidth / 2])
+            rotate([0, 90, 0])
+                extrusion(extrusion, eWidth + size.y - nut_thickness(tnut) - extrusion_tab_thickness(extrusion), false, cornerHole = eWidth > 20);
+    }
+
+
+module bracket_test(bracket)
+    rotate([90, 0, 180]) {
+        extrusion = extrusion_corner_bracket_extrusion(bracket);
+        eWidth = extrusion_width(extrusion);
+        size = extrusion_corner_bracket_size(bracket);
+
+        extrusion_corner_bracket_assembly(bracket);
+
+        translate([-eWidth / 2, 0])
+            rotate([-90, 0, 0])
+                extrusion(extrusion, size.y, false, cornerHole = eWidth > 20);
+
+        translate([-eWidth, -eWidth / 2])
+            rotate([0, 90, 0])
+                extrusion(extrusion, eWidth + size.x, false, cornerHole = eWidth > 20);
+    }
+
+
 module extrusion_brackets(examples = false) {
     extrusion_inner_corner_bracket(E20_inner_corner_bracket);
 
@@ -32,34 +70,30 @@ module extrusion_brackets(examples = false) {
     translate([60, 0])
         extrusion_corner_bracket_assembly(E20_corner_bracket);
 
-    eWidth = extrusion_width(E2020);
+    translate([110, 0])
+         extrusion_inner_corner_bracket(E40_inner_corner_bracket);
+
+    translate([140, 0])
+        extrusion_corner_bracket_assembly(E40_corner_bracket);
 
     if(examples) {
-        translate([20, 60, 10]) rotate([90, 0, 180]) {
-            extrusion_inner_corner_bracket(E20_inner_corner_bracket);
+        translate([20, 50, 10])
+            inner_bracket_test(E20_inner_corner_bracket, true);
 
-            translate([-eWidth / 2, 0, 0])
-                rotate([-90, 0, 0])
-                    extrusion(E2020, 20, false);
+        translate([20, 80, 10])
+            inner_bracket_test(E20_inner_corner_bracket);
 
-            translate([-eWidth, -eWidth / 2, 0])
-                rotate([0, 90, 0])
-                    extrusion(E2020, 40, false);
-        }
+        translate([20, 120, 10])
+            bracket_test(E20_corner_bracket);
 
-        translate([100, 60, 10]) rotate([90, 0, 180]) {
-            extrusion_corner_bracket_assembly(E20_corner_bracket);
+        translate([100, 70, 10])
+            inner_bracket_test(E40_inner_corner_bracket);
 
-            translate([-eWidth / 2, 0, 0])
-                rotate([-90, 0, 0])
-                    extrusion(E2020, 30, false);
-
-            translate([-eWidth, -eWidth / 2, 0])
-                rotate([0, 90, 0])
-                    extrusion(E2020, 50, false);
-        }
+        translate([100, 130, 10])
+            bracket_test(E40_corner_bracket);
     }
 }
 
 if($preview)
-    extrusion_brackets(true);
+    let($show_threads = true)
+        extrusion_brackets(true);

tests/extrusions.scad

@@ -21,9 +21,24 @@ use <../utils/layout.scad>
 
 include <../vitamins/extrusions.scad>
 
+gap = 10;
+
 module extrusions()
-    layout([for(e = extrusions) extrusion_width(e)], 10)
-        extrusion(extrusions[$i], 80, cornerHole = extrusion_width(extrusions[$i]) > 20);
+    layout([for(e = extrusions) is_list(e[0]) ? extrusion_width(e[0]) : extrusion_width(e)], gap)
+        let(e = extrusions[$i])
+            if(is_list(e[0])) {
+                list = e;
+                heights = [for(e = list) extrusion_height(e)];
+                l = len(heights) - 1;
+                offset = (heights * [for(i = [0 : l]) 1] + l * gap) / 2;
+                translate([0, -offset])
+                    rotate(90)
+                        layout(heights, gap)
+                            rotate(-90)
+                                extrusion(list[$i], 80, cornerHole = extrusion_width(list[$i]) > 20);
+            }
+            else
+                extrusion(e, 80, cornerHole = extrusion_width(e) > 20);
 
 if ($preview)
     extrusions();

tests/geared_steppers.scad

@@ -16,12 +16,13 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
+include <../core.scad>
 include <../vitamins/geared_steppers.scad>
 
 use <../utils/layout.scad>
 
 module geared_steppers()
-    layout([for(g = geared_steppers) gs_diameter(g)], 5)
+    layout([for(g = geared_steppers) max(gs_diameter(g), gs_pitch(g) + gs_lug_w(g) / 2)], 5)
         geared_stepper(geared_steppers[$i]);
 
 geared_steppers();

tests/green_terminals.scad

@@ -16,6 +16,7 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
+include <../core.scad>
 use <../utils/layout.scad>
 
 include <../vitamins/green_terminals.scad>

tests/hygrometer.scad

@@ -16,6 +16,7 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
+include <../core.scad>
 use <../vitamins/hygrometer.scad>
 
 if($preview)

tests/jack.scad

@@ -22,12 +22,15 @@ use <../vitamins/jack.scad>
 
 module jacks() {
     translate([0, 0])
-        jack_4mm("blue",3, "royalblue");
+        jack_4mm_plastic("black",3, grey(20));
 
     translate([20, 0])
-        jack_4mm_shielded("brown", 3, "sienna");
+        jack_4mm("blue",3, "royalblue");
 
     translate([40, 0])
+        jack_4mm_shielded("brown", 3, "sienna");
+
+    translate([60, 0])
         post_4mm("red",3);
 }
 

tests/knob.scad

@@ -0,0 +1,58 @@
+//
+// NopSCADlib Copyright Chris Palmer 2021
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// This file is part of NopSCADlib.
+//
+// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
+// GNU General Public License as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+// See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with NopSCADlib.
+// If not, see <https://www.gnu.org/licenses/>.
+//
+z = 1; // [0: 5]
+thickness = 3; // [0: 5]
+shaft_length = 10;
+
+include <../core.scad>
+use <../printed/knob.scad>
+use <../utils/layout.scad>
+
+include <../vitamins/potentiometers.scad>
+
+knobs = [for(i = [0 : len(potentiometers) - 1]) let(p = potentiometers[i])
+     knob_for_pot(p, thickness, z, shaft_length = pot_shaft(p).z > 20 ? shaft_length : undef,
+                  top_d   = [10,    12,      20,    16,        16       ][i],
+                  bot_d   = [10,    15,      20,    20,        20       ][i],
+                  skirt   = [false, [20, 2], false,      [27, 1.5], [27, 1.5]][i],
+                  pointer = [false, false,   [14, [1, 5], 2], [13.5, [1, 1], 3], [13.5, [1, 3], 3]][i],
+                  screw = let(s = pot_shaft(p)) s.y > s.x / 2 ? M3_grub_screw : false
+                 )];
+
+
+module knobs(show_pot = false)
+    layout([for(p = potentiometers) pot_size(p).x], 5) let(p = potentiometers[$i])
+        if($preview) {
+            translate_z(z)
+                knob_assembly(knobs[$i]);
+
+            if(show_pot)
+                translate_z(-thickness)
+                    vflip() {
+                        potentiometer(p, shaft_length = shaft_length);
+
+                        translate_z(-thickness)
+                            pot_nut(p);
+                    }
+        }
+        else
+            knob(knobs[$i]);
+
+
+knobs(true);

tests/microview.scad

@@ -16,6 +16,7 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
+include <../utils/core/core.scad>
 use <../vitamins/microview.scad>
 
 microview(!$preview);

tests/nuts.scad

@@ -52,6 +52,12 @@ module nuts() {
 
             if(n == M5_nut)
                 sliding_t_nut(M5_sliding_t_nut);
+
+            if(n == M6_nut)
+                sliding_t_nut(M6_sliding_t_nut);
+
+            if(n == M8_nut)
+                sliding_t_nut(M8_sliding_ball_t_nut);
         }
 
         translate([0, 80]) {

tests/o_ring.scad

@@ -16,6 +16,7 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
+include <../core.scad>
 use <../vitamins/o_ring.scad>
 
 module o_rings()

tests/pin_headers.scad

@@ -64,8 +64,9 @@ module pin_headers() {
             pin_socket(pin_headers[$i], 3, 3, right_angle = true);
     }
 
-    for(i = [0, 1], p = [5, 2][i], j = [0 , 1]) {
-        h = [jst_ph_header, jst_xh_header][j];
+    headers = [jst_zh_header, jst_ph_header, jst_xh_header];
+    for(i = [0, 1], p = [5, 2][i], j = [0 : len(headers) - 1]) {
+        h = headers[j];
         translate([-20 * (i + 1), 0 + j * 40])
             jst_xh_header(h, p);