First prototype

.gitignore

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+# For PCBs designed using KiCad: http://www.kicad-pcb.org/
+# Format documentation: http://kicad-pcb.org/help/file-formats/
+
+# Temporary files
+*.000
+*.bak
+*.bck
+*.kicad_pcb-bak
+*.kicad_sch-bak
+*.kicad_prl
+*.sch-bak
+*~
+_autosave-*
+*.tmp
+*-save.pro
+*-save.kicad_pcb
+fp-info-cache
+
+# Netlist files (exported from Eeschema)
+*.net
+
+# Autorouter files (exported from Pcbnew)
+*.dsn
+*.ses
+
+# Exported BOM files
+*.xml
+*.csv
+
+__pycache__/
+
+# Generated CAD files
+*.dxf
+*.scad
+
+*.gbr
+*.drl

.style.yapf

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+[style]
+based_on_style = facebook

Makefile

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+%.dxf: %.scad
+	openscad $< -o $@
+
+%.scad: %.py cad.py layout.py
+	python $< > $@
+
+.PHONY: clean
+clean:
+	rm -rf *.scad *.dxf left/ right/ left.zip right.zip
+
+.PHONY: case_panels
+case_panels: lower_panel.dxf upper_panel.dxf
+
+.PHONY: pcb_layout
+pcb_layout: pcb_outline.dxf
+	python pcb_layout.py ./hardware/aya.kicad_pcb
+
+left/left.kicad_pcb: hardware/aya.kicad_pcb
+	mkdir -p "$(shell dirname $@)"
+	kikit panelize extractboard -s -220 -25 200 140 $< $@
+
+right/right.kicad_pcb: hardware/aya.kicad_pcb
+	mkdir -p "$(shell dirname $@)"
+	kikit panelize extractboard -s   20 -25 200 140 $< $@
+
+.PHONY: pcb_split
+pcb_split: left/left.kicad_pcb right/right.kicad_pcb
+
+left.zip: left/left.kicad_pcb
+	zip $@ left/*.gbr left/*.drl
+
+right.zip: right/right.kicad_pcb
+	zip $@ right/*.gbr right/*.drl
+
+.PHONY: pcb_gerbers
+pcb_gerbers: left.zip right.zip

cad.py

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+import numpy as np
+import solid as sp
+
+import layout, utils
+
+
+def place_switch(position, orientation):
+    return sp.translate(position)(
+        sp.rotate((0, 0, orientation))(sp.square([14, 14], center=True))
+    )
+
+
+def switch_cutouts(positions, orientations):
+    for a in range(0, layout.num_switches):
+        col, row = divmod(a, layout.matrix_rows)
+        yield place_switch(positions[col, row], orientations[col, row])
+
+
+def mcu_header_cutouts(mcu_position):
+    return sp.translate(mcu_position)(
+        [
+            sp.translate([x, -1.2])(sp.square([4.5, 33], center=True))
+            for x in [-7.6, 7.6]
+        ],
+    )
+
+
+def case_outline(outline):
+    return sp.minkowski()(
+        sp.polygon(points=outline),
+        sp.circle(r=15.),
+    )
+
+
+def case_panel(outline, mounting_holes):
+    return sp.difference()(
+        case_outline(outline),
+        [
+            sp.translate(p)(
+                sp.circle(d=layout.mounting_hole_diameter, segments=32)
+            ) for p in mounting_holes
+        ],
+    )