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Thickness*2; v_margin = hole_dist_top*2 + thickness; width_mm = hp_mm(width); // where to put reinforcing walls; i.e. The thickness of 2mm // for inset labels, translating to this height controls label depth label_inset_height = thickness-1; //title test module label(string, size=4, halign="center", font="Futura XBlk BT:style=Extra Black"; // 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, wide, drill 0.75mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/219.pdf), SMD, LowProfile SMD 3x-dip-switch SPST CTS_Series194-3MSTN, Piano, row spacing 7.62 mm (300 mils), body size 6.7x21.88mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/204.pdf), SMD SMD 8x-dip-switch SPST Omron_A6H-8101, Slide, row spacing 7.62 mm (300 mils), SMDSocket, LongPads 5-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils), LongPads THT DIP DIL PDIP 2.54mm 10.16mm 400mil Socket 3M 16-pin zero insertion force socket, through-hole, row spacing 7.62 mm (300 mils 8-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils), LongPads 18-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils 12-lead though-hole mounted DIP package, row spacing 15.24 mm (600 mils), Socket 14-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils), Socket, LongPads THT DIP DIL PDIP SMDIP 2.54mm 15.24mm 600mil 28-lead surface-mounted (SMD) DIP package, row spacing 7.62 mm (300 mils), LongPads 18-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils), missing pin 6 8-lead though-hole mounted DIP package, row spacing 15.24 mm (600 mils), Socket, LongPads 48-lead though-hole mounted DIP package, row spacing 10.16 mm (400 mils), LongPads 20-lead though-hole mounted DIP package, row spacing 25.4 mm (1000 mils), http://multimedia.3m.com/mws/media/494546O/3mtm-dip-sockets-100-2-54-mm-ts0365.pdf THT DIP DIL PDIP 2.54mm 22.86mm 900mil SMDSocket SmallPads 24-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils), body size (see http://www.nidec-copal-electronics.com/e/catalog/switch/chs.pdf), SMD, JPin SMD 5x-dip-switch SPST , Slide, row spacing 7.62 mm (300 mils), LongPads 22-lead though-hole mounted DIP package, row spacing 8.89 mm (350 mils), SMDSocket, SmallPads 18-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils.

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