Updated changelog.

Added links in the project readme to STL, DXF and SVG files.

.gitignore

@@ -11,3 +11,5 @@ options.json
 times.txt
 *_diff.png
 *.echo
+cmd_times.txt
+*.gco

docs/usage.md

@@ -1,8 +1,8 @@
 # NopSCADlib usage
 
 ## Requirements
-1. OpenSCAD 2019.05 or later, download it from here: https://www.openscad.org/downloads.html
-1. Python 2.7+ or 3.6+ from https://www.python.org/downloads/
+1. OpenSCAD 2021.01 or later, download it from here: https://www.openscad.org/downloads.html
+1. Python 3.6+ from https://www.python.org/downloads/
 1. ImageMagick 7 www.imagemagick.org
 
 These are all cross platform tools so NopSCADlib should work on any platform that supports them, although it has currently only been tested on Win7.
@@ -28,7 +28,9 @@ by downloading https://github.com/nophead/NopSCADlib/archive/master.zip and unzi
 
 The `NopSCADlib/scripts` directory needs to be added to the executable search path, `PATH` on Windows and `path` on Linux and Mac.
 
-The installation can be tested by opening `NopSCADlib/libtest.scad` in the OpenSCAD GUI. It should render all the objects in the library in about 1 minute.
+Note that on Linux and OSX the full file name including the `.py` will be needed.
+
+The installation can be tested by opening `NopSCADlib/libtest.scad` in the OpenSCAD GUI. It should render all the objects in the library in about 2 minutes.
 
 Running `tests` from the command line will run all the tests in the `tests` directory and build the `readme.md` catalog for GitHub and render it to `readme.html`
 for local preview.
@@ -172,7 +174,7 @@ This is achieved by having a pair of modules: -
     //! 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
-    assembly("handle") {
+    assembly("handle", ngb = true) {
         translate_z(handle_height())
             stl_colour(pp1_colour) vflip() handle_stl();
 
@@ -201,6 +203,9 @@ When the parent assembly is shown exploded the handle's screws will be exploded
 Note also the `pose([225, 0, 150], [0, 0, 14])` call before the `assembly()` call. This allows the sub-assembly to be posed differently in its build step but doesn't
 affect its orientation in the parent assembly. The pose parameters are the rotation and the translation taken from the GUI.
 
+Setting `ngb = true` in the `assembly()` prevents the handle assembly appearing as a columun in the top level BOM in the build instructions.
+Instead its parts are merged into the parent BOM so the correct quantites are listed.
+
 ### Exploded diagrams
 
 A lot of vitamins explode themselves when `$explode=1`. This is done with module `explode()` that can be passed a Z offset, or a 3D vector that gives the displacement
@@ -267,6 +272,22 @@ 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/EnviroPlus/bom/RPI_assembly.txt

@@ -0,0 +1,5 @@
+RPI_assembly:
+Vitamins:
+  1 Micro SD card
+  1 Raspberry Pi Zero
+  1 Pin header 20 x 2 right_angle

examples/EnviroPlus/bom/RPI_case_assembly.txt

@@ -0,0 +1,7 @@
+RPI_case_assembly:
+Vitamins:
+  2 Screw M2.5 pan x  6.4mm
+
+Assemblies:
+  1 RPI_assembly
+  1 enviro_case_assembly

examples/EnviroPlus/bom/back_assembly.txt

@@ -0,0 +1,8 @@
+back_assembly:
+Vitamins:
+  1 Fan 17mm x 8mm
+  1 PMS5003 particle detector
+
+Printed:
+  1 enviro_plus_case_base.stl
+  1 fan_duct.stl

examples/EnviroPlus/bom/bom.csv

@@ -0,0 +1,21 @@
+'Micro SD card',  1
+'Fan 17mm x 8mm',  1
+'Heatfit insert M2 x 4mm',  4
+'Nut M2.5 x 2.2mm nyloc',  4
+'Enviro+',  1
+'Raspberry Pi Zero',  1
+'Pin header 20 x 2 right_angle',  1
+'PMS5003 particle detector',  1
+'Screw M2 cap x  6mm',  4
+'Screw M2.5 pan x  6.4mm',  2
+'Screw M2.5 pan x  8mm',  4
+'Screw M3 pan x  6mm',  3
+'SMD capacitor 1206 10uF',  1
+'SMD resistor 0805 3K3 0.125W',  1
+'SOT223 package FZT851',  1
+'Veroboard 6 holes x 6 strips',  1
+'Washer  M2 x 5mm x 0.3mm',  4
+'Washer  M2.5 x 5.9mm x 0.5mm',  4
+'Washer  M3 x 7mm x 0.5mm',  3
+'Wire link 0.8mm x 6.5mm',  3
+'Wire link 0.8mm x 0.4"',  1

examples/EnviroPlus/bom/bom.json

@@ -0,0 +1,199 @@
+[
+    {
+        "name": "back_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {},
+        "vitamins": {
+            "pms5003(): PMS5003 particle detector": {
+                "count": 1
+            },
+            "fan(fan17x8): Fan 17mm x 8mm": {
+                "count": 1
+            }
+        },
+        "printed": {
+            "fan_duct.stl": {
+                "count": 1,
+                "colour": "darkorange",
+                "camera": "0,0,0,70,0,315,500"
+            },
+            "enviro_plus_case_base.stl": {
+                "count": 1,
+                "colour": "grey",
+                "camera": "0,0,0,70,0,315,500"
+            }
+        },
+        "routed": {}
+    },
+    {
+        "name": "RPI_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {},
+        "vitamins": {
+            "pcb(RPI0): Raspberry Pi Zero": {
+                "count": 1
+            },
+            ": Micro SD card": {
+                "count": 1
+            },
+            "pin_header(2p54header, 20, 2, right_angle = true): Pin header 20 x 2 right_angle": {
+                "count": 1
+            }
+        },
+        "printed": {},
+        "routed": {}
+    },
+    {
+        "name": "fan_controller_assembly",
+        "big": true,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {},
+        "vitamins": {
+            "veroboard(fan_vb): Veroboard 6 holes x 6 strips": {
+                "count": 1
+            },
+            "wire_link(0.8, 10.16, tail = 2.5): Wire link 0.8mm x 0.4\"": {
+                "count": 1
+            },
+            "wire_link(0.8, 0, h = 4, tail = 2.5): Wire link 0.8mm x 6.5mm": {
+                "count": 3
+            },
+            "smd_resistor(RES0805, 3K3): SMD resistor 0805 3K3 0.125W": {
+                "count": 1
+            },
+            "smd_capacitor(CAP1206, value = \"10uF\"): SMD capacitor 1206 10uF": {
+                "count": 1
+            },
+            "smd_sot(SOT223, \"FZT851\"): SOT223 package FZT851": {
+                "count": 1
+            }
+        },
+        "printed": {},
+        "routed": {}
+    },
+    {
+        "name": "enviro_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {
+            "fan_controller_assembly": 1
+        },
+        "vitamins": {
+            "pcb(EnviroPlus): Enviro+": {
+                "count": 1
+            }
+        },
+        "printed": {},
+        "routed": {}
+    },
+    {
+        "name": "case_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {},
+        "vitamins": {
+            "insert(F1BM2): Heatfit insert M2 x 4mm": {
+                "count": 4
+            },
+            "washer(M3_washer): Washer  M3 x 7mm x 0.5mm": {
+                "count": 3
+            },
+            "screw(M3_pan_screw, 6): Screw M3 pan x  6mm": {
+                "count": 3
+            }
+        },
+        "printed": {
+            "enviro_plus_case.stl": {
+                "count": 1,
+                "colour": "grey",
+                "camera": "0,0,0,70,0,315,500"
+            },
+            "bulkhead.stl": {
+                "count": 1,
+                "colour": "[0.862745, 0.0784314, 0.235294]",
+                "camera": "0,0,0,70,0,315,500"
+            },
+            "foot.stl": {
+                "count": 3,
+                "colour": "darkorange",
+                "camera": "0,0,0,70,0,315,500"
+            }
+        },
+        "routed": {}
+    },
+    {
+        "name": "enviro_case_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {
+            "case_assembly": 1,
+            "enviro_assembly": 1
+        },
+        "vitamins": {
+            "screw(M2p5_pan_screw, 8): Screw M2.5 pan x  8mm": {
+                "count": 4
+            },
+            "washer(M2p5_washer): Washer  M2.5 x 5.9mm x 0.5mm": {
+                "count": 4
+            },
+            "nut(M2p5_nut, nyloc = true): Nut M2.5 x 2.2mm nyloc": {
+                "count": 4
+            }
+        },
+        "printed": {},
+        "routed": {}
+    },
+    {
+        "name": "RPI_case_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {
+            "enviro_case_assembly": 1,
+            "RPI_assembly": 1
+        },
+        "vitamins": {
+            "screw(M2p5_pan_screw, 6.4): Screw M2.5 pan x  6.4mm": {
+                "count": 2
+            }
+        },
+        "printed": {},
+        "routed": {}
+    },
+    {
+        "name": "main_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {
+            "RPI_case_assembly": 1,
+            "back_assembly": 1
+        },
+        "vitamins": {
+            "washer(M2_washer): Washer  M2 x 5mm x 0.3mm": {
+                "count": 4
+            },
+            "screw(M2_cap_screw, 6): Screw M2 cap x  6mm": {
+                "count": 4
+            }
+        },
+        "printed": {},
+        "routed": {}
+    }
+]

examples/EnviroPlus/bom/bom.txt

@@ -0,0 +1,53 @@
+Vitamins:
+                   F   
+                   a   
+                   n   
+                E      
+                n  c   
+                v  o   
+    R           i  n   
+    p           r  t   
+    i        E  o  r   
+             n     o   
+    c  B  C  v  c  l  M
+ R  a  a  a  i  a  l  a
+ p  s  c  s  r  s  e  i
+ i  e  k  e  o  e  r  n
+ 1|  |  |  |  |  |  |  |  1 Micro SD card
+  |  | 1|  |  |  |  |  |  1 Fan 17mm x 8mm
+  |  |  | 4|  |  |  |  |  4 Heatfit insert M2 x 4mm
+  |  |  |  |  | 4|  |  |  4 Nut M2.5 x 2.2mm nyloc
+  |  |  |  | 1|  |  |  |  1 Enviro+
+ 1|  |  |  |  |  |  |  |  1 Raspberry Pi Zero
+ 1|  |  |  |  |  |  |  |  1 Pin header 20 x 2 right_angle
+  |  | 1|  |  |  |  |  |  1 PMS5003 particle detector
+  |  |  |  |  |  |  | 4|  4 Screw M2 cap x  6mm
+  | 2|  |  |  |  |  |  |  2 Screw M2.5 pan x  6.4mm
+  |  |  |  |  | 4|  |  |  4 Screw M2.5 pan x  8mm
+  |  |  | 3|  |  |  |  |  3 Screw M3 pan x  6mm
+  |  |  |  |  |  | 1|  |  1 SMD capacitor 1206 10uF
+  |  |  |  |  |  | 1|  |  1 SMD resistor 0805 3K3 0.125W
+  |  |  |  |  |  | 1|  |  1 SOT223 package FZT851
+  |  |  |  |  |  | 1|  |  1 Veroboard 6 holes x 6 strips
+  |  |  |  |  |  |  | 4|  4 Washer  M2 x 5mm x 0.3mm
+  |  |  |  |  | 4|  |  |  4 Washer  M2.5 x 5.9mm x 0.5mm
+  |  |  | 3|  |  |  |  |  3 Washer  M3 x 7mm x 0.5mm
+  |  |  |  |  |  | 3|  |  3 Wire link 0.8mm x 6.5mm
+  |  |  |  |  |  | 1|  |  1 Wire link 0.8mm x 0.4"
+
+Printed:
+  |  |  | 1|  |  |  |  |  1 bulkhead.stl
+  |  |  | 1|  |  |  |  |  1 enviro_plus_case.stl
+  |  | 1|  |  |  |  |  |  1 enviro_plus_case_base.stl
+  |  | 1|  |  |  |  |  |  1 fan_duct.stl
+  |  |  | 3|  |  |  |  |  3 foot.stl
+
+Assemblies:
+  1 RPI_assembly
+  1 RPI_case_assembly
+  1 back_assembly
+  1 case_assembly
+  1 enviro_assembly
+  1 enviro_case_assembly
+  1 fan_controller_assembly
+  1 main_assembly

examples/EnviroPlus/bom/case_assembly.txt

@@ -0,0 +1,10 @@
+case_assembly:
+Vitamins:
+  4 Heatfit insert M2 x 4mm
+  3 Screw M3 pan x  6mm
+  3 Washer  M3 x 7mm x 0.5mm
+
+Printed:
+  1 bulkhead.stl
+  1 enviro_plus_case.stl
+  3 foot.stl

examples/EnviroPlus/bom/enviro_assembly.txt

@@ -0,0 +1,6 @@
+enviro_assembly:
+Vitamins:
+  1 Enviro+
+
+Assemblies:
+  1 fan_controller_assembly

examples/EnviroPlus/bom/enviro_case_assembly.txt

@@ -0,0 +1,9 @@
+enviro_case_assembly:
+Vitamins:
+  4 Nut M2.5 x 2.2mm nyloc
+  4 Screw M2.5 pan x  8mm
+  4 Washer  M2.5 x 5.9mm x 0.5mm
+
+Assemblies:
+  1 case_assembly
+  1 enviro_assembly

examples/EnviroPlus/bom/fan_controller_assembly.txt

@@ -0,0 +1,8 @@
+fan_controller_assembly:
+Vitamins:
+  1 SMD capacitor 1206 10uF
+  1 SMD resistor 0805 3K3 0.125W
+  1 SOT223 package FZT851
+  1 Veroboard 6 holes x 6 strips
+  3 Wire link 0.8mm x 6.5mm
+  1 Wire link 0.8mm x 0.4"

examples/EnviroPlus/bom/main_assembly.txt

@@ -0,0 +1,8 @@
+main_assembly:
+Vitamins:
+  4 Screw M2 cap x  6mm
+  4 Washer  M2 x 5mm x 0.3mm
+
+Assemblies:
+  1 RPI_case_assembly
+  1 back_assembly

examples/EnviroPlus/readme.md

@@ -0,0 +1,298 @@
+<a name="TOP"></a>
+# EnviroPlus
+Environmental monitor using Enviro+ sensor board and a Raspberry Pi Zero.
+
+![Main Assembly](assemblies/main_assembled.png)
+
+<span></span>
+
+---
+## Table of Contents
+1. [Parts list](#Parts_list)
+1. [Back Assembly](#back_assembly)
+1. [RPI Assembly](#RPI_assembly)
+1. [Fan Controller Assembly](#fan_controller_assembly)
+1. [Enviro Assembly](#enviro_assembly)
+1. [Case Assembly](#case_assembly)
+1. [Enviro Case Assembly](#enviro_case_assembly)
+1. [RPI Case Assembly](#RPI_case_assembly)
+1. [Main Assembly](#main_assembly)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="Parts_list"></a>
+## Parts list
+| <span style="writing-mode: vertical-rl; text-orientation: mixed;">Back</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">RPI</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">Fan&nbsp;Controller</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">Enviro</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">Case</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">Enviro&nbsp;Case</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">RPI&nbsp;Case</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">Main</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">TOTALS</span> |  |
+|---:|---:|---:|---:|---:|---:|---:|---:|---:|:---|
+|  |  |  |  |  |  |  |  | | **Vitamins** |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Enviro+ |
+| &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Fan 17mm x 8mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp; Heatfit insert M2 x 4mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Micro SD card |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp; Nut M2.5 x 2.2mm nyloc |
+| &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; PMS5003 particle detector |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Pin header 20 x 2 right_angle |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Raspberry Pi Zero |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; SMD capacitor 1206 10uF |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; SMD resistor 0805 3K3 0.125W |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; SOT223 package FZT851 |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;4&nbsp; |  &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp; Screw M2 cap x  6mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp; Screw M2.5 pan x  6.4mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp; Screw M2.5 pan x  8mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp; Screw M3 pan x  6mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Veroboard 6 holes x 6 strips |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;4&nbsp; |  &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp; Washer  M2 x 5mm x 0.3mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;4&nbsp; | &nbsp;&nbsp; Washer  M2.5 x 5.9mm x 0.5mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp; Washer  M3 x 7mm x 0.5mm |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp; Wire link 0.8mm x 0.4" |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp; Wire link 0.8mm x 6.5mm |
+| &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;8&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;10&nbsp; | &nbsp;&nbsp;12&nbsp; | &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp;8&nbsp; | &nbsp;&nbsp;46&nbsp; | &nbsp;&nbsp;Total vitamins count |
+|  |  |  |  |  |  |  |  | | **3D printed parts** |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;bulkhead.stl |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;enviro_plus_case.stl |
+| &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;enviro_plus_case_base.stl |
+| &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;fan_duct.stl |
+| &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; |  &nbsp;&nbsp;3&nbsp; | &nbsp;&nbsp;foot.stl |
+| &nbsp;&nbsp;2&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;5&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;.&nbsp; | &nbsp;&nbsp;7&nbsp; | &nbsp;&nbsp;Total 3D printed parts count |
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="back_assembly"></a>
+## Back Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|1| Fan 17mm x 8mm|
+|1| PMS5003 particle detector|
+
+
+### 3D Printed parts
+
+| 1 x [enviro_plus_case_base.stl](stls/enviro_plus_case_base.stl) | 1 x [fan_duct.stl](stls/fan_duct.stl) |
+|---|---|
+| ![enviro_plus_case_base.stl](stls/enviro_plus_case_base.png) | ![fan_duct.stl](stls/fan_duct.png) 
+
+
+
+### Assembly instructions
+![back_assembly](assemblies/back_assembly.png)
+
+1. Print the fan duct in flexible TPE with low infill.
+1. Slide the pms5003 into the printed receptacle with the fan to the outside. Secure with tape if it is loose.
+1. Slide the fan into the fan duct.
+1. Slide the fan duct into the printed recepacle.
+
+![back_assembled](assemblies/back_assembled.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="RPI_assembly"></a>
+## RPI Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|1| Micro SD card|
+|1| Pin header 20 x 2 right_angle|
+|1| Raspberry Pi Zero|
+
+
+### Assembly instructions
+![RPI_assembly](assemblies/RPI_assembly_tn.png)
+
+* Solder a right angle connector to the Raspberry Pi Zero.
+
+![RPI_assembled](assemblies/RPI_assembled_tn.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="fan_controller_assembly"></a>
+## Fan Controller Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|1| SMD capacitor 1206 10uF|
+|1| SMD resistor 0805 3K3 0.125W|
+|1| SOT223 package FZT851|
+|1| Veroboard 6 holes x 6 strips|
+|1| Wire link 0.8mm x 0.4"|
+|3| Wire link 0.8mm x 6.5mm|
+
+
+### Assembly instructions
+![fan_controller_assembly](assemblies/fan_controller_assembly.png)
+
+The fan controller is a single transistor wired as a Miller integrator that effectively multiplies the capacitor value by the gain of the transistor.
+It converts the PWM signal on GPI4 to a stead DC voltage so that the fan doesn't whine, or stutter.
+
+![Schematic](docs/fan_controller.jpg)
+
+***
+* Make two track cuts as shown, one wide and the other narrow.
+
+![TrackCuts](docs/cuts.jpg)
+
+1. Add the SMT compeonents and then the wire links.
+1. Add more solder around the transistor to act as a heatsink.
+
+![SMT](docs/smt.jpg)
+
+
+![fan_controller_assembled](assemblies/fan_controller_assembled.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="enviro_assembly"></a>
+## Enviro Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|1| Enviro+|
+
+
+### Sub-assemblies
+
+| 1 x fan_controller_assembly |
+|---|
+| ![fan_controller_assembled](assemblies/fan_controller_assembled_tn.png) 
+
+
+
+### Assembly instructions
+![enviro_assembly](assemblies/enviro_assembly.png)
+
+* Solder the fan_controller to the Enviro+ expansion connector at the 5V, GND and #4 pins.
+
+![enviro_assembled](assemblies/enviro_assembled.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="case_assembly"></a>
+## Case Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|4| Heatfit insert M2 x 4mm|
+|3| Screw M3 pan x  6mm|
+|3| Washer  M3 x 7mm x 0.5mm|
+
+
+### 3D Printed parts
+
+| 1 x [bulkhead.stl](stls/bulkhead.stl) | 1 x [enviro_plus_case.stl](stls/enviro_plus_case.stl) | 3 x [foot.stl](stls/foot.stl) |
+|---|---|---|
+| ![bulkhead.stl](stls/bulkhead.png) | ![enviro_plus_case.stl](stls/enviro_plus_case.png) | ![foot.stl](stls/foot.png) 
+
+
+
+### Assembly instructions
+![case_assembly](assemblies/case_assembly.png)
+
+1. Solvent weld or glue the bulkhead into the recess in the bottom of the case.
+1. Fit the heatfit inserts with a soldering iron with a conical bit heated to about 200&deg;C.
+1. Tap the three holes for the feet with an M3 tap.
+1. Screw on the three feet with M3 x 6mm pan screws and washers.
+
+![case_assembled](assemblies/case_assembled.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="enviro_case_assembly"></a>
+## Enviro Case Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|4| Nut M2.5 x 2.2mm nyloc|
+|4| Screw M2.5 pan x  8mm|
+|4| Washer  M2.5 x 5.9mm x 0.5mm|
+
+
+### Sub-assemblies
+
+| 1 x case_assembly | 1 x enviro_assembly |
+|---|---|
+| ![case_assembled](assemblies/case_assembled_tn.png) | ![enviro_assembled](assemblies/enviro_assembled_tn.png) 
+
+
+
+### Assembly instructions
+![enviro_case_assembly](assemblies/enviro_case_assembly.png)
+
+* Screw the Enviro+ PCB to the front of the case using M2.5 x 8mm pan screws with washer and nuts on the inside.
+
+![enviro_case_assembled](assemblies/enviro_case_assembled.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="RPI_case_assembly"></a>
+## RPI Case Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|2| Screw M2.5 pan x  6.4mm|
+
+
+### Sub-assemblies
+
+| 1 x RPI_assembly | 1 x enviro_case_assembly |
+|---|---|
+| ![RPI_assembled](assemblies/RPI_assembled_tn.png) | ![enviro_case_assembled](assemblies/enviro_case_assembled_tn.png) 
+
+
+
+### Assembly instructions
+![RPI_case_assembly](assemblies/RPI_case_assembly.png)
+
+* Plug the RPi into the Enviro+ socket and secure with two screws self tapped into the bosses in the case.
+
+![RPI_case_assembled](assemblies/RPI_case_assembled.png)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="main_assembly"></a>
+## Main Assembly
+### Vitamins
+|Qty|Description|
+|---:|:----------|
+|4| Screw M2 cap x  6mm|
+|4| Washer  M2 x 5mm x 0.3mm|
+
+
+### Sub-assemblies
+
+| 1 x RPI_case_assembly | 1 x back_assembly |
+|---|---|
+| ![RPI_case_assembled](assemblies/RPI_case_assembled_tn.png) | ![back_assembled](assemblies/back_assembled_tn.png) 
+
+
+
+### Assembly instructions
+![main_assembly](assemblies/main_assembly.png)
+
+* Solder the fan wires to the veroboard assembly
+
+![FanWires](docs/fan_connection.jpg)
+
+* Slide the back assembly into the case and secure with four M2 x 6mm cap screws and washers.
+
+![main_assembled](assemblies/main_assembled.png)
+
+<span></span>
+[Top](#TOP)

examples/EnviroPlus/scad/fan_controller.scad

@@ -0,0 +1,43 @@
+//
+//! Environmental monitor using Enviro+ sensor board and a Raspberry Pi Zero.
+//
+// GNU GPL v2
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// Top level model
+//
+include <NopSCADlib/core.scad>
+use <NopSCADlib/vitamins/veroboard.scad>
+include <NopSCADlib/vitamins/smds.scad>
+
+fan_vb = vero("fan_vb", "fan_controller", 6, 6, breaks = [[2, 1], [2 + eps, 5]],
+    components = [
+        [5, 3,    90, "link", inch(0.4), undef, undef, 2.5],
+        [0, 5,     0, "link", 0, 4, undef, 2.5],
+        [0, 1,     0, "link", 0, 4, undef, 2.5],
+        [0, 0,     0, "link", 0, 4, undef, 2.5],
+        [2, 5,     0, "-smd_res", RES0805, "3K3"],
+        [4, 4.5,  90, "-smd_cap", CAP1206, 1.2, "10uF"],
+        [2, 2.5, 180, "-smd_sot", SOT223, "FZT851"],
+    ]
+ );
+
+//! The fan controller is a single transistor wired as a Miller integrator that effectively multiplies the capacitor value by the gain of the transistor.
+//! It converts the PWM signal on GPI4 to a stead DC voltage so that the fan doesn't whine, or stutter.
+//!
+//! ![Schematic](docs/fan_controller.jpg)
+//!
+//! ***
+//! * Make two track cuts as shown, one wide and the other narrow.
+//!
+//! ![TrackCuts](docs/cuts.jpg)
+//!
+//! 1. Add the SMT compeonents and then the wire links.
+//! 1. Add more solder around the transistor to act as a heatsink.
+//!
+//! ![SMT](docs/smt.jpg)
+//!
+module fan_controller_assembly() rotate(90) vflip() veroboard_fastened_assembly(fan_vb, -vero_thickness(fan_vb) - 1.4, 0);
+
+fan_controller_assembly();

examples/EnviroPlus/scad/main.scad

@@ -0,0 +1,519 @@
+//
+//! Environmental monitor using Enviro+ sensor board and a Raspberry Pi Zero.
+//
+// GNU GPL v2
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// Top level model
+//
+$explode = 0; // [0, 1]
+assembly = "main"; // [main, back, RPI, case, enviro_case, RPI_case]
+
+/* [Hidden] */
+
+show_box = true;
+show_enviroplus = true;
+$pp1_colour = "grey";
+$extrusion_width = 0.5;
+
+include <NopSCADlib/core.scad>
+include <NopSCADlib/vitamins/pin_headers.scad>
+include <NopSCADlib/vitamins/pcbs.scad>
+include <NopSCADlib/vitamins/fans.scad>
+
+use <NopSCADlib/vitamins/insert.scad>
+use <NopSCADlib/vitamins/veroboard.scad>
+use <NopSCADlib/utils/round.scad>
+use <NopSCADlib/utils/pcb_utils.scad>
+use <NopSCADlib/printed/foot.scad>
+use <NopSCADlib/printed/printed_box.scad>
+use <fan_controller.scad>
+
+rpi = RPI0;
+pcb = EnviroPlus;
+fan = fan17x8;
+foot = Foot(d = 13, h = 5, t = 2, r = 1, screw = M3_pan_screw);
+module foot_stl() foot(foot);
+
+rpi_offset = [0, -pcb_width(pcb) / 2 + 0.5, pcb_width(rpi) / 2 + 8.6];
+rpi_holes = [0, 1];
+wall = 2;
+top_thickness = 2;
+base_thickness = 2;
+case_inner_rad = 8;
+
+width = pcb_length(pcb) + 9 + 10;
+pcb_x = -(width - pcb_length(pcb) - 9) / 2;
+depth = pcb_width(pcb) + 9;
+height = pcb_width(rpi) / 2 + rpi_offset.z + 9;
+bulkhead_outset = 2;
+bulkhead_inset = 0.5;
+bulkhead_t = 2;
+clearance = 0.1;
+pcb_screw = alternate_screw(hs_pan, pcb_screw(pcb));
+
+box = pbox(name = "enviro_plus_case", wall = wall, top_t = top_thickness, base_t = base_thickness, screw = M2_cap_screw, radius = case_inner_rad, ridges = [8, 1],
+    size = [width,  depth, height]);
+
+pms5003 = [50, 38, 21];
+pms5003_wall = 1;
+pms5003_pos = [width / 2 - pms5003.x / 2 - pms5003_wall - pbox_screw_inset(box) - insert_boss_radius(screw_insert(pbox_screw(box)), wall) - 0.5,
+               depth / 2 - pms5003.z / 2 - wall - 1,
+               height + top_thickness - pms5003.y / 2];
+
+
+fan_duct_t = 1.7;
+foam_t = 0;
+fan_pos = [pms5003_pos.x - pms5003.x / 2 - pms5003_wall - fan_width(fan) / 2 - fan_duct_t, 1 + foam_t, 12 + top_thickness + fan_depth(fan) / 2];
+fan_socket = 8;
+
+module fan_shape() {
+    w = fan_width(fan);
+    p = fan_hole_pitch(fan);
+    r = w / 2 - p;
+
+    rounded_square([w, w], r);
+}
+
+module fan_duct_stl() {
+    module frame(z, offset, y = -fan_pos.y)
+        translate([0, y, z])
+            linear_extrude(height = eps)
+                offset(offset)
+                    fan_shape();
+
+    z = height + top_thickness - fan_pos.z + fan_depth(fan) / 2 - fan_socket;
+
+    translate([0, -fan_pos.y, z])
+        linear_extrude(height = fan_socket)
+            difference() {
+                fan_shape();
+
+                round(1)
+                    offset(-fan_duct_t)
+                        fan_shape();
+            }
+
+    stl("fan_duct") union() {
+        difference() {
+            hull() {
+                frame(z, 0);
+
+                frame(fan_depth(fan), fan_duct_t + foam_t, 0);
+            }
+            hull() {
+                frame(z, -fan_duct_t);
+
+                frame(fan_depth(fan), foam_t -extrusion_width / 2, 0);
+            }
+        }
+
+        linear_extrude(height = fan_depth(fan))
+            difference() {
+                offset(fan_duct_t + foam_t)
+                    fan_shape();
+
+                offset(foam_t)
+                    fan_shape();
+            }
+    }
+}
+
+module pms5003() {
+    vitamin("pms5003(): PMS5003 particle detector");
+
+    w = pms5003.x;
+    d = pms5003.y;
+    h = pms5003.z;
+    t = 0.1;
+    color("silver")
+        difference() {
+            linear_extrude(height = h, center = true)
+                difference() {
+                    square([w, d], center = true);
+
+                    for(x = [-1, 1], y = [-1, 1])
+                        translate([x * w / 2, y * d / 2])
+                            square(2, center = true);
+                }
+            cube([w + 2 * eps, d + 2 * eps, t * 2], center = true);
+         }
+
+    color("black")
+        rounded_rectangle([w - 2 * t, d - 2 * t, h - 2 * t], r = 1, center = true);
+}
+
+module pcb_shape(offset)
+    rounded_square([pcb_length(pcb) + 2 * offset, pcb_width(pcb) + 2 * offset], pcb_radius(pcb) + offset);
+
+module gap() {
+    gap = pcb_component_position(pcb, "-chip");
+
+    translate([gap.x, -gap.y])
+        square([17.5, 20], center = true);
+}
+
+module rpi_holes()
+    for(i = rpi_holes) {
+        hole = pcb_coord(rpi, pcb_holes(rpi)[i]);
+        translate([hole.x, rpi_offset.y, -hole.y + rpi_offset.z + top_thickness])
+            rotate([90, 0, 0])
+                children();
+    }
+
+module feet_positions() {
+    clearance = 2;
+    foot_r = foot_diameter(foot) / 2;
+    x_inset = case_inner_rad + foot_r - pbox_ridges(box).y;
+    z_inset = foot_r + clearance;
+    h = height + base_thickness;
+
+    for(p = [[-1, -1], [1, -1], [0, 1]])
+        translate([p.x * (width / 2 - x_inset), depth / 2 + wall + pbox_ridges(box).y, top_thickness + h / 2 + p.y * (h / 2 - z_inset)])
+            rotate([90, 0, 0])
+                children();
+}
+
+module slots(h = 10, expand = 0) {
+    for(comp = [["uSD", 2, 11, 0.7], ["flat_flex", 1, 12, 0.5]]) {
+        p = pcb_component_position(rpi, comp[0]);
+        translate([sign(p.x) * (width / 2 + wall / 2 + pbox_ridges(box).y / 2), rpi_offset.y + pcb_thickness(rpi) + comp[3], top_thickness + rpi_offset.z - p.y])
+            rotate([90, 0, 90])
+                hull() {
+                    vertical_tearslot(r = comp[1] + expand, l = comp[2], h = h);
+
+                    if(expand)
+                         vertical_tearslot(r = comp[1] + expand + h / 2, l = comp[2], h = eps);
+                }
+     }
+}
+
+module box_internal_additions() {
+    translate([pcb_x, 0]) {
+        linear_extrude(height = top_thickness + bulkhead_t)
+            difference() {
+                pcb_shape(bulkhead_outset + wall + pbox_ridges(box).y + eps);
+
+                gap();
+
+                pcb_shape(bulkhead_outset + clearance);
+            }
+
+        rpi_holes()
+            hull() {
+                wall = 1.8;
+                r =  screw_radius(pcb_screw) + wall;
+                z = depth / 2 + rpi_offset.y + pbox_ridges(box).y + eps;
+                offset = max(r, z);
+                cylinder(r =r, h = z);
+
+                translate([0, -offset - r, z])
+                    cube(eps);
+            }
+    }
+    d = washer_diameter(screw_washer(foot_screw(foot))) + 1;
+    h = pbox_ridges(box).y;
+    feet_positions()
+        translate_z(wall - eps)
+            cylinder(d2 = d, d1 = d + 2 * h, h = h);
+
+    slots(wall + pbox_ridges(box).y + eps, 1);
+}
+
+module box_external_additions() {
+    amp = pbox_ridges(box).y + eps;
+    d = foot_diameter(foot) + 1;
+    feet_positions()
+        cylinder(d1 = d, d2 = d + 2 * amp, h = amp);
+
+    slots(wall + pbox_ridges(box).y + eps, 1);
+}
+
+
+module box_holes() {
+    translate([pcb_x, 0]) {
+        linear_extrude(height = top_thickness + eps)
+            pcb_shape(clearance);
+
+        rpi_holes()
+            teardrop_plus(r = screw_pilot_hole(pcb_screw), h = 7 - 1.6, center = false);
+    }
+    feet_positions()
+        teardrop(r = screw_pilot_hole(foot_screw(foot)), h = 10, center = true);
+
+    grills = 7;
+    bar = 1.6;
+    x = pcb_x + pcb_length(pcb) / 2 + 2 * wall +  pbox_ridges(box).y + 2 * eps;
+    w = width / 2 - x;
+    d = depth - case_inner_rad;
+    pitch = d / (grills - 1);
+    for(i = [0 : grills -1])
+        let(w = i == 0 || i == grills -1 ? w - 1 : w)
+            translate([x + w / 2, -d / 2 + i * pitch])
+                rounded_rectangle([w, pitch - bar, 10], 1);
+
+    slots();
+}
+
+module bulkhead_stl() {
+    holes = pcb_holes(pcb);
+    pitch = max([for(h = holes) pcb_coord(pcb, h).x]) - min([for(h = holes)  pcb_coord(pcb, h).x]);
+    boss_r = (pitch - 51.4) / 2;
+
+    stl("bulkhead")
+        linear_extrude(height = bulkhead_t)
+            difference() {
+                pcb_shape(bulkhead_outset);
+
+                gap();
+
+                difference() {
+                    pcb_shape(-bulkhead_inset);
+
+                    pcb_screw_positions(pcb)
+                        rotate($i * 90)
+                            hull() {
+                                circle(boss_r);
+
+                                translate([boss_r - eps, -boss_r])
+                                    square([eps, boss_r]);
+
+                                translate([-boss_r, boss_r - eps])
+                                    square([boss_r, eps]);
+
+                                translate([-boss_r, -boss_r])
+                                    square(eps);
+                            }
+                }
+
+                pcb_screw_positions(pcb)
+                    poly_circle(screw_clearance_radius(pcb_screw));
+            }
+}
+
+module enviro_plus_case_stl() {
+     pbox(box) {
+        box_internal_additions();
+        box_holes();
+        box_external_additions();
+     }
+}
+
+module base_additions() {
+    w = pms5003.x + clearance;
+    d = pms5003.z + clearance;
+    wall = pms5003_wall;
+
+    translate([pms5003_pos.x, -pms5003_pos.y])
+        linear_extrude(height = base_thickness + pms5003.y)
+            difference() {
+                square([w + 2 * wall, d + 2 * wall], center = true);
+                square([w, d], center = true);
+            }
+
+    translate([fan_pos.x, 0])
+        linear_extrude(height = top_thickness + fan_socket)
+            difference() {
+                offset(wall)
+                    fan_shape();
+
+                fan_shape();
+            }
+}
+
+module base_holes() {
+    for(i = [0 : 1]) {
+        p = pcb_component_position(rpi, "usb_uA", i);
+        translate([p.x + pcb_x, -rpi_offset.y - pcb_thickness(rpi) - 1.3])
+            rounded_rectangle([11,7, 100], 0.5, true);
+    }
+
+    translate([pms5003_pos.x, -pms5003_pos.y])
+        rounded_rectangle([pms5003.x - 2 ,pms5003.z - 2, 100], 2, true);
+
+    translate([fan_pos.x, 0])
+        linear_extrude(height = 2 * base_thickness + eps, center = true)
+            round(1)
+                offset(-fan_duct_t)
+                    fan_shape();
+}
+
+module enviro_plus_case_base_stl()
+    pbox_base(box) {
+        base_additions();
+        base_holes();
+    }
+
+//! * Solder a right angle connector to the Raspberry Pi Zero.
+module RPI_assembly()
+assembly("RPI") {
+    pcb(rpi);
+
+    pcb_grid(rpi, 9.5, 0.5, -0.6)
+        rotate(180)
+            explode(20)
+                pin_header(2p54header, 20, 2, right_angle = true);
+}
+
+//! 1. Solvent weld or glue the bulkhead into the recess in the bottom of the case.
+//! 1. Fit the heatfit inserts with a soldering iron with a conical bit heated to about 200&deg;C.
+//! 1. Tap the three holes for the feet with an M3 tap.
+//! 1. Screw on the three feet with M3 x 6mm pan screws and washers.
+module case_assembly() pose([ 29.60, 0.00, 158.00 ], exploded = true) pose([ 198.00, 0.00, 352.80 ], exploded = false)
+assembly("case") {
+    if(show_box)
+        stl_colour(pp1_colour) render() enviro_plus_case_stl();
+    else
+        render() difference() {
+            enviro_plus_case_stl();
+
+            translate_z(height / 2)
+                cube([100, 100, height - 20], center = true);
+        }
+
+    pbox_inserts(box);
+
+    translate([pcb_x, 0, top_thickness])
+        explode(20)
+            stl_colour(pp2_colour) render() bulkhead_stl();
+
+    feet_positions() {
+        foot_assembly(0, foot);
+
+        vflip()
+            explode(20, explode_children = true)
+                translate_z(foot_thickness(foot))
+                    screw_and_washer(foot_screw(foot), 6);
+    }
+
+}
+
+//! * Solder the fan_controller to the Enviro+ expansion connector at the 5V, GND and #4 pins.
+module enviro_assembly() hflip(exploded())
+assembly("enviro") {
+    if(show_enviroplus)
+        pcb(pcb);
+
+    pcb_grid(pcb, 5.5, 2.5, -pcb_thickness(pcb)) {
+        hflip()
+            explode(15)
+                fan_controller_assembly();
+    }
+    if(!exploded())
+        for(x = [8, 7, 3])
+            pcb_grid(pcb, x, 0, 0.05)
+                solder_meniscus(0.39, 1);
+}
+
+//! * Screw the Enviro+ PCB to the front of the case using M2.5 x 8mm pan screws with washer and nuts on the inside.
+module enviro_case_assembly() pose([ 231.40, 0.00, 1.20 ])
+assembly("enviro_case") {
+    case_assembly();
+
+    translate([pcb_x, 0, top_thickness])
+        vflip() explode(20, explode_children = true) {
+            t = pcb_thickness(pcb);
+            nut = screw_nut(pcb_screw);
+            washer = screw_washer(pcb_screw);
+
+            no_explode() enviro_assembly();
+
+            pcb_screw_positions(pcb) {
+                translate_z(t)
+                    screw(pcb_screw, screw_longer_than(t + bulkhead_t + nut_thickness(nut, true) + washer_thickness(washer)));
+
+                translate_z(-bulkhead_t)
+                    vflip()
+                        explode(20, explode_children = true)
+                            nut_and_washer(nut, true);
+            }
+        }
+}
+
+//! * Plug the RPi into the Enviro+ socket and secure with two screws self tapped into the bosses in the case.
+module RPI_case_assembly() pose([ 20.50, 0.00, 153.30 ])
+assembly("RPI_case") {
+    enviro_case_assembly();
+
+    translate([pcb_x, 0]) {
+        translate_z(top_thickness) {
+
+            translate(rpi_offset)
+                rotate([-90, 0, 0])
+                    RPI_assembly();
+        }
+        rpi_holes()
+            vflip()
+                translate_z(pcb_thickness(rpi))
+                    screw(pcb_screw, 6.4);
+    }
+}
+
+//! 1. Print the fan duct in flexible TPE with low infill.
+//! 1. Slide the pms5003 into the printed receptacle with the fan to the outside. Secure with tape if it is loose.
+//! 1. Slide the fan into the fan duct.
+//! 1. Slide the fan duct into the printed recepacle.
+module back_assembly() pose([ 228.60, 0.00, 24.30 ])
+assembly("back") {
+    translate(pms5003_pos)
+        explode(-50)
+            rotate([90, 0, 0])
+                pms5003();
+
+    explode(-20, explode_children = true)
+        translate(fan_pos) {
+            explode(-20)
+                fan(fan);
+
+            translate_z(-fan_depth(fan) / 2)
+                stl_colour(pp4_colour)
+                    render()
+                        fan_duct_stl();
+        }
+
+    translate_z(height + top_thickness + base_thickness + eps) vflip()
+        stl_colour(show_box ? pp1_colour : pp2_colour) render() enviro_plus_case_base_stl();
+}
+
+//! * Solder the fan wires to the veroboard assembly
+//!
+//! ![FanWires](docs/fan_connection.jpg)
+//!
+//! * Slide the back assembly into the case and secure with four M2 x 6mm cap screws and washers.
+module main_assembly() pose([170, 335, 0], exploded = false) pose([ 42.20, 0.00, 159.60 ], exploded = true)
+assembly("main") {
+    RPI_case_assembly();
+
+    explode(20, explode_children = true) {
+        pbox_base_screws(box);
+
+        back_assembly();
+    }
+}
+
+if($preview) {
+    if(assembly == "main")
+        main_assembly();
+    else if(assembly == "case")
+        case_assembly();
+    else if(assembly == "back")
+        back_assembly();
+    else if(assembly == "RPI")
+        RPI_assembly();
+    else if(assembly == "RPI_case")
+        RPI_case_assembly();
+    else if(assembly == "enviro_case")
+        enviro_case_assembly();
+}
+else {
+    gap = 5;
+
+    enviro_plus_case_stl();
+
+    translate([0, -depth - gap])
+        enviro_plus_case_base_stl();
+
+    translate([0, -2 * (depth + gap)])
+        bulkhead_stl();
+}

examples/Gridfinity/bom/bom.json

@@ -0,0 +1,49 @@
+[
+    {
+        "name": "main_assembly",
+        "big": null,
+        "ngb": false,
+        "zoomed": 0,
+        "count": 1,
+        "assemblies": {},
+        "vitamins": {},
+        "printed": {
+            "lathe_tool_stand.stl": {
+                "count": 1,
+                "colour": "[0, 0.572549, 0]",
+                "camera": "0,0,0,70,0,315,500"
+            },
+            "MT2_stand.stl": {
+                "count": 1,
+                "colour": "[0, 0.572549, 0]",
+                "camera": "0,0,0,70,0,315,500"
+            },
+            "chuck_stand.stl": {
+                "count": 1,
+                "colour": "[0, 0.572549, 0]",
+                "camera": "0,0,0,70,0,315,500"
+            },
+            "chuck_jaw_bin.stl": {
+                "count": 1,
+                "colour": "[0, 0.572549, 0]",
+                "camera": "0,0,0,70,0,315,500"
+            },
+            "1x1_bin.stl": {
+                "count": 1,
+                "colour": "[0, 0.572549, 0]",
+                "camera": "0,0,0,70,0,315,500"
+            },
+            "123_block_stand.stl": {
+                "count": 1,
+                "colour": "[0, 0.572549, 0]",
+                "camera": "0,0,0,70,0,315,500"
+            },
+            "faceplate_stand.stl": {
+                "count": 1,
+                "colour": "[0, 0.572549, 0]",
+                "camera": "0,0,0,70,0,315,500"
+            }
+        },
+        "routed": {}
+    }
+]

examples/Gridfinity/bom/bom.txt

@@ -0,0 +1,15 @@
+ M
+ a
+ i
+ n
+Printed:
+ 1|  1 123_block_stand.stl
+ 1|  1 1x1_bin.stl
+ 1|  1 MT2_stand.stl
+ 1|  1 chuck_jaw_bin.stl
+ 1|  1 chuck_stand.stl
+ 1|  1 faceplate_stand.stl
+ 1|  1 lathe_tool_stand.stl
+
+Assemblies:
+  1 main_assembly

examples/Gridfinity/bom/main_assembly.txt

@@ -0,0 +1,9 @@
+main_assembly:
+Printed:
+  1 123_block_stand.stl
+  1 1x1_bin.stl
+  1 MT2_stand.stl
+  1 chuck_jaw_bin.stl
+  1 chuck_stand.stl
+  1 faceplate_stand.stl
+  1 lathe_tool_stand.stl

examples/Gridfinity/readme.md

@@ -0,0 +1,64 @@
+<a name="TOP"></a>
+# Gridfinity
+Gridfinity examples
+
+![Main Assembly](assemblies/main_assembled.png)
+
+<span></span>
+
+---
+## Table of Contents
+1. [Parts list](#Parts_list)
+1. [Main Assembly](#main_assembly)
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="Parts_list"></a>
+## Parts list
+| <span style="writing-mode: vertical-rl; text-orientation: mixed;">Main</span> | <span style="writing-mode: vertical-rl; text-orientation: mixed;">TOTALS</span> |  |
+|---:|---:|:---|
+|  | | **3D printed parts** |
+| &nbsp;&nbsp;1&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;123_block_stand.stl |
+| &nbsp;&nbsp;1&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;1x1_bin.stl |
+| &nbsp;&nbsp;1&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;MT2_stand.stl |
+| &nbsp;&nbsp;1&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;chuck_jaw_bin.stl |
+| &nbsp;&nbsp;1&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;chuck_stand.stl |
+| &nbsp;&nbsp;1&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;faceplate_stand.stl |
+| &nbsp;&nbsp;1&nbsp; |  &nbsp;&nbsp;1&nbsp; | &nbsp;&nbsp;lathe_tool_stand.stl |
+| &nbsp;&nbsp;7&nbsp; | &nbsp;&nbsp;7&nbsp; | &nbsp;&nbsp;Total 3D printed parts count |
+
+<span></span>
+[Top](#TOP)
+
+---
+<a name="main_assembly"></a>
+## Main Assembly
+### 3D Printed parts
+
+| 1 x [123_block_stand.stl](stls/123_block_stand.stl) | 1 x [1x1_bin.stl](stls/1x1_bin.stl) | 1 x [MT2_stand.stl](stls/MT2_stand.stl) |
+|---|---|---|
+| ![123_block_stand.stl](stls/123_block_stand.png) | ![1x1_bin.stl](stls/1x1_bin.png) | ![MT2_stand.stl](stls/MT2_stand.png) 
+
+
+| 1 x [chuck_jaw_bin.stl](stls/chuck_jaw_bin.stl) | 1 x [chuck_stand.stl](stls/chuck_stand.stl) | 1 x [faceplate_stand.stl](stls/faceplate_stand.stl) |
+|---|---|---|
+| ![chuck_jaw_bin.stl](stls/chuck_jaw_bin.png) | ![chuck_stand.stl](stls/chuck_stand.png) | ![faceplate_stand.stl](stls/faceplate_stand.png) 
+
+
+| 1 x [lathe_tool_stand.stl](stls/lathe_tool_stand.stl) |
+|---|
+| ![lathe_tool_stand.stl](stls/lathe_tool_stand.png) 
+
+
+
+### Assembly instructions
+![main_assembly](assemblies/main_assembly.png)
+
+Show all the Gridfinity parts
+
+![main_assembled](assemblies/main_assembled.png)
+
+<span></span>
+[Top](#TOP)

examples/Gridfinity/scad/123_block_stand.scad

@@ -0,0 +1,58 @@
+include <NopSCADlib/core.scad>
+
+use <NopSCADlib/printed/gridfinity.scad>
+use <NopSCADlib/utils/maths.scad>
+use <NopSCADlib/utils/chamfer.scad>
+
+tool_size = 8;
+
+box = gridfinity_bin("123_block_stand", 2, 2, 5);
+
+123_block = inch([3, 1, 2]);
+
+102040_block = [20, 10, 40];
+
+blocks = [123_block, 123_block, 102040_block];
+
+box_mm = gridfinity_bin_size_mm(box);
+wall = 1.75;
+bwall = 1;
+clearance = 0.5;
+
+gap = (box_mm.y - sumv([for(b = blocks) b.y])) / (len(blocks) + 1);
+
+module holes() {
+    let($b = blocks[0])
+        translate([0, box_mm.y / 2 - gap - $b.y / 2])
+            children();
+
+    let($b = blocks[1])
+        translate([0, box_mm.y / 2 - gap - blocks[0].y - gap - $b.y / 2])
+            children();
+
+    for(side = [-1, 1])
+        let($b = blocks[2])
+            translate([side * (blocks[2].x + 2 * gap) / 2,
+                       box_mm.y / 2 - gap - blocks[0].y - gap - blocks[1].y - gap - blocks[2].y / 2 ])
+                children();
+}
+
+module 123_block_stand_stl()
+    gridfinity_bin(box) union() {
+        holes() {
+            translate_z(gridfinity_base_z() + bwall + $b.z / 2 + eps)
+                cube([$b.x + clearance, $b.y + clearance, $b.z + 2 * eps], true);
+
+            chamfer = 1;
+            translate_z(box_mm.z)
+                chamfer_hole(chamfer)
+                    square([$b.x + clearance, $b.y + clearance], true);
+        }
+        translate_z(gridfinity_base_z() + bwall)
+            difference() {
+                rounded_rectangle([box_mm.x - 2 * wall, box_mm.y - 2 * wall, box_mm.z - gridfinity_base_z() - bwall - wall], gridfinity_corner_r() - wall);
+
+                holes()
+                    rounded_rectangle([$b.x + clearance + 2 * wall, $b.y + clearance + 2 * wall, 100], wall, center = true);
+            }
+    }

examples/Gridfinity/scad/1x1_bin.scad

@@ -0,0 +1,9 @@
+include <NopSCADlib/core.scad>
+
+use <NopSCADlib/printed/gridfinity.scad>
+
+box = gridfinity_bin("1x1_bin", 1, 1, 5);
+
+module 1x1_bin_stl()
+    gridfinity_bin(box)
+        gridfinity_partition(box, 1, 1);

examples/Gridfinity/scad/MT2_stand.scad

@@ -0,0 +1,80 @@
+//
+// Stand for MT2 taper lathe tools
+//
+include <NopSCADlib/core.scad>
+use <NopSCADlib/utils/maths.scad>
+use <NopSCADlib/utils/chamfer.scad>
+
+use <NopSCADlib/printed/gridfinity.scad>
+
+box = gridfinity_bin("MT2_stand", 4, 2, 8);
+
+box_mm = gridfinity_bin_size_mm(box);
+wall = 1.75;
+bwall = 1;
+
+
+diameters1 = [43, 47, 64];
+d2 = 20;
+
+clearance = 1;
+clearance2 = 4;
+
+MT2_base = 5; // smaller diameters
+MT2_D1 = 15; // diameter at the bottom of the taper at base height
+MT2_half_angle = 1.4302777777777778;
+
+hole_depth = box_mm.z - gridfinity_base_z() - bwall;
+MT2_r1 = MT2_D1 / 2;
+MT2_r2 = MT2_r1 + (hole_depth - MT2_base) * tan(MT2_half_angle);
+
+gap = (box_mm.x - sumv(diameters1) - 2 * clearance) / (len(diameters1) - 1);
+gap2 = 18;
+
+module MT2_socket() {
+    clearance = 0.3;
+
+    translate_z(-hole_depth) {
+        poly_cylinder(MT2_r1 + clearance / 2, MT2_base + eps);
+
+        translate_z(MT2_base)
+            hull() {
+                poly_cylinder(MT2_r1 + clearance / 2, eps);
+
+                translate_z(hole_depth - MT2_base)
+                    poly_cylinder(MT2_r2 + clearance / 2, eps);
+            }
+    }
+    chamfer_hole(1)
+        poly_circle(MT2_r2 + clearance / 2);
+}
+
+function pos(i)  = [clearance + sumv(slice(diameters1, 0, i)) + i * gap + diameters1[i] / 2 - box_mm.x / 2, box_mm.y / 2 - clearance - diameters1[i] / 2, box_mm.z];
+function pos2(i) = [clearance2 + i * gap2 + (i + 0.5) * d2 - box_mm.x / 2, -box_mm.y / 2 + clearance2 + d2 / 2, box_mm.z];
+
+module holes()
+    for(i = [0 : len(diameters1) - 1]) {
+        translate(pos(i))
+            children();
+
+        translate(pos2(i))
+            children();
+    }
+
+module MT2_stand_stl()
+    gridfinity_bin(box) union() {
+        holes()
+            MT2_socket();
+
+        translate_z(gridfinity_base_z() + bwall)
+            difference() {
+                rounded_rectangle([box_mm.x - 2 * wall, box_mm.y - 2 * wall, box_mm.z - gridfinity_base_z() - bwall - wall], gridfinity_corner_r() - wall);
+
+                holes()
+                    cylinder(r =  MT2_r2 + wall, h = 200, center = true);
+
+                for(x = [-box_mm.x / 2 : 20 :  box_mm.x /2])
+                    translate([x, 0])
+                        cube([squeezed_wall, 200, 200], center = true);
+            }
+    }

examples/Gridfinity/scad/chuck_jaw_bin.scad

@@ -0,0 +1,36 @@
+include <NopSCADlib/core.scad>
+use <NopSCADlib/utils/chamfer.scad>
+
+use <NopSCADlib/printed/gridfinity.scad>
+
+box = gridfinity_bin("chuck_jaw_bin", 1, 1, 5);
+
+box_mm = gridfinity_bin_size_mm(box);
+
+bwall = 1;
+
+length = 37;
+width = 34;
+
+
+z_bot = gridfinity_base_z() + bwall;
+
+depth = box_mm.z - z_bot;
+
+module chuck_jaw_bin_stl()
+    gridfinity_bin(box)
+        translate_z(box_mm.z) {
+            cube([length, width, depth * 2], true);
+
+            chamfer = 1;
+
+            chamfer_hole(chamfer)
+                square([length, width], true);
+
+            *hull() {
+                rounded_rectangle([length + 2 * chamfer, width + 2 * chamfer, eps], chamfer);
+
+                translate_z(-chamfer + eps / 2)
+                    cube([length, width, eps], true);
+            }
+        }

examples/Gridfinity/scad/chuck_stand.scad

@@ -0,0 +1,52 @@
+include <NopSCADlib/core.scad>
+
+use <NopSCADlib/printed/gridfinity.scad>
+use <NopSCADlib/utils/chamfer.scad>
+
+box = gridfinity_bin("chuck_stand", 2, 2, 5);
+
+box_mm = gridfinity_bin_size_mm(box);
+
+bwall = 1;
+
+chuck_d = 80;
+ring_od = 50;
+ring_id = 40;
+ring_h = 4;
+
+hole_pitch = (60 + 72.5) / 2;
+hole_d = (72.5 - 60) / 2;
+hole_depth = 15;
+clearance = 0.5;
+chamfer = 1;
+
+z_bot = gridfinity_base_z() + bwall;
+
+module chuck_stand_stl()
+    gridfinity_bin(box) union() {
+        translate_z(z_bot) {
+            for(a = [0 : 30 : 330])
+                rotate(a)
+                    translate([0, hole_pitch / 2]) {
+                        poly_cylinder(hole_d / 2 + clearance / 2, h = 100);
+
+                        translate_z(hole_depth)
+                            chamfer_hole(chamfer)
+                                poly_circle(hole_d / 2 + clearance / 2);
+                    }
+
+            translate_z(hole_depth) {
+                poly_cylinder(r = chuck_d / 2 + clearance / 2, h = 100);
+
+                poly_tube(or = ring_od / 2 + clearance, ir = ring_id / 2 - clearance, h = 2 * ring_h, center = true);
+
+                chamfer_hole(chamfer)
+                    poly_circle(ring_od / 2 + clearance);
+            }
+
+
+        }
+        translate_z(box_mm.z)
+            chamfer_hole(chamfer)
+                poly_circle(r = chuck_d / 2 + clearance / 2);
+    }

examples/Gridfinity/scad/faceplate_stand.scad

@@ -0,0 +1,56 @@
+include <NopSCADlib/core.scad>
+
+use <NopSCADlib/printed/gridfinity.scad>
+use <NopSCADlib/utils/maths.scad>
+use <NopSCADlib/utils/chamfer.scad>
+
+tool_size = 8;
+
+box = gridfinity_bin("faceplate_stand", 3, 1, 5);
+
+faceplate = [112, 16, 17];
+sanding_disc = [69, 6.7, 14.5];
+
+discs = [faceplate, sanding_disc];
+
+box_mm = gridfinity_bin_size_mm(box);
+wall = 1.8;
+bwall = 1;
+clearance = 0.5;
+
+gap = (box_mm.y - sumv([for(b = discs) b.z])) / (len(discs) + 1);
+
+module holes() {
+    for(i = [0 : len(discs) - 1]) let($d = discs[i])
+        translate([0, box_mm.y / 2 - gap - (i ? discs[0].z + gap : 0) - $d.z / 2])
+            children();
+}
+
+module faceplate_stand_stl()
+    gridfinity_bin(box) union() {
+        holes() {
+            $fa = 1;
+            r = $d.x / 2 + clearance / 2;
+            z = gridfinity_base_z() + bwall + r;
+            translate_z(z)
+                rotate([90, 0, 0])
+                    teardrop_plus(r = r, h = $d.y + clearance, center = true);
+
+            chamfer = 1;
+            h = z - box_mm.z + wall;
+            translate_z(box_mm.z)
+                chamfer_hole(chamfer)
+                    square([2 * sqrt(sqr(r) - sqr(h)), $d.y + clearance], true);
+        }
+        difference() {
+            translate_z(gridfinity_base_z() + bwall)
+                rounded_rectangle([box_mm.x - 2 * wall, box_mm.y - 2 * wall, box_mm.z - gridfinity_base_z() - bwall - wall], gridfinity_corner_r() - wall);
+
+            holes() {
+                r = $d.x / 2 + clearance / 2;
+                translate_z(gridfinity_base_z() + bwall + r)
+                    rotate([90, 0, 0])
+                        teardrop_plus(r = r + wall, h = $d.y + clearance + 2 * wall);
+            }
+        }
+    }

examples/Gridfinity/scad/lathe_tool_stand.scad

@@ -0,0 +1,45 @@
+include <NopSCADlib/core.scad>
+
+use <NopSCADlib/printed/gridfinity.scad>
+use <NopSCADlib/utils/chamfer.scad>
+
+tool_size = 8;
+
+rows = 2;
+cols = 5;
+spacing = 8;
+
+hole = tool_size + 0.2;
+
+tool_pitch = hole + spacing;
+
+box = gridfinity_bin("lathe_tool_stand", 2, 1, 5);
+
+module holes()
+    for(x = [0 : cols - 1], y = [0 : rows - 1])
+        translate([x - (cols -1) / 2, y - (rows - 1) / 2] * tool_pitch)
+            children();
+
+box_mm = gridfinity_bin_size_mm(box);
+wall = 1.75;
+bwall = 1;
+
+module lathe_tool_stand_stl()
+    gridfinity_bin(box) union() {
+        translate_z(box_mm.z)
+            holes() {
+                cube([hole, hole, 2 * (box_mm.z - gridfinity_base_z() - bwall)], true);
+
+                chamfer = 1;
+                chamfer_hole(chamfer)
+                    square([hole, hole], true);
+            }
+
+        translate_z(gridfinity_base_z() + bwall)
+            difference() {
+                rounded_rectangle([box_mm.x - 2 * wall, box_mm.y - 2 * wall, box_mm.z - gridfinity_base_z() - bwall - wall], gridfinity_corner_r() - wall);
+
+                holes()
+                    rounded_rectangle([hole + 2 * wall, hole + 2 * wall, 100], wall, center = true);
+            }
+    }

examples/Gridfinity/scad/main.scad

@@ -0,0 +1,42 @@
+//
+//! Gridfinity examples
+//
+include <NopSCADlib/core.scad>
+
+use <lathe_tool_stand.scad>
+use <MT2_stand.scad>
+use <chuck_stand.scad>
+use <chuck_jaw_bin.scad>
+use <1x1_bin.scad>
+use <123_block_stand.scad>
+use <faceplate_stand.scad>
+
+
+//! Show all the Gridfinity parts
+module main_assembly()
+    assembly("main") {
+        $manifold = true;
+
+        lathe_tool_stand_stl();
+
+        translate([42, 63])
+            MT2_stand_stl();
+
+        translate([42 * 2, -42 / 2])
+            chuck_stand_stl();
+
+        translate([-21, -42])
+            chuck_jaw_bin_stl();
+
+        translate([21, -42])
+            1x1_bin_stl();
+
+        translate([42 * 4, -42 / 2])
+            123_block_stand_stl();
+
+         translate([42 * 6.5, 0])
+            faceplate_stand_stl();
+    }
+
+
+main_assembly();