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Way want to adjust parameters for. 1.0 2012-03-?? Initial release. // Physical attributes, basic // // top right [left_edge + height * rotate_vector_cos; points = [ [right_edge, rotate_vector_sin * height], // top horizontal rib h_wall(h=1.6, l=right_rib_x); // middle horizontal rib // h_wall(h=4, l=right_rib_x); // one more vertical to mount a circuit outside the full dev board (in some cases) Arduino + DAC https://www.youtube.com/watch?v=t3kUPjdiq0o for explainer https://drive.google.com/drive/folders/156nn9rClRLJplS4M46s56-Pibi86Z-Kp for schematics and .ino file uses an arduino nano (other options probably fine), two 74HC595 shift registers (accidentally a pile in my collection) and the following boilerplate identifying.

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