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Right, just pegging the output jacks output_column = width_mm - thickness*2; // draw panel, subtract holes union() { difference(){ color([.1,.1,.1]) panel(width); // waves out wall(h=4, w=width_mm-hole_dist_top-4); // 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 LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on https://www.analog.com/media/en/technical-documentation/data-sheets/199399fc.pdf TO-92 2-pin leads in-line, narrow, oval pads, drill 0.75mm (see NXP sot054_po.pdf TO-92 horizontal, leads in-line, narrow, oval pads, drill 0.75mm (see https://www.diodes.com/assets/Package-Files/TO92L.pdf and http://www.ti.com/lit/an/snoa059/snoa059.pdf TO-92L Inline Wide transistor TO-92Mini package, drill 0.75mm (https://www.diodes.com/assets/Package-Files/TO92S%20(Type%20B).pdf TO-92 leads molded, narrow, drill 0.75mm (https://www.diodes.com/assets/Package-Files/TO92S%20(Type%20B).pdf TO-92 leads molded, narrow, drill 0.75mm (see NXP sot054_po.pdf TO-92 leads molded, wide, drill 0.75mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/209-210.pdf), LowProfile 7x-dip-switch SPST CTS_Series194-7MSTN, Piano, row spacing 7.62 mm (300 mils), see https://www.vishay.com/docs/91361/hexdip.pdf THT DIP DIL PDIP 2.54mm 25.4mm 1000mil SMDSocket SmallPads 22-lead though-hole mounted DIP package, row spacing 8.89 mm (350 mils), body.

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