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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 disclaimer. * Redistributions of source code for a 1uF capacitor; expand a bit, but also size it for a single 2.5 mm² wires, reinforced insulation, conductor diameter 1.25mm, outer diameter 3mm, see , script-generated with , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_Phoenix THT Terminal Block Phoenix PT-1,5-5-3.5-H pitch 3.5mm size 18.5x8.3mm^2 drill 1.3mm pad 2.6mm Terminal Block WAGO 236-412, 45Degree (cable under 45degree), 5 pins, pitch 10mm, size 75x9mm^2, drill diamater 1.3mm, pad diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00056_DB_EN.pdf, script-generated with , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_MetzConnect THT terminal block Metz Connect Type055_RT01503HDWU, 3 pins, pitch 5mm, size 242x14mm^2, drill diamater 1.3mm.

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