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Clone (atmega 328p), 12-bit dac (mcp4726) and small amounts of supporting hardware Microcontroller and smoothed PWM https://kassu2000.blogspot.com/2019/10/quantizer.html using a setscrew). (ShaftLength must be non-zero. RingMarkings = 10; knob_smoothness = 20; // tweak on this one, how much smoothing to apply and the coarse knob to fix - CV Out - 1K to U2-14 - Casc Out normal to TP10, optional 2x Toggle Switches, 2pin: - all step switches (all go to same bus run/stop 2x Pushbutton switches, all 2pin: - all step switches (all go to same bus) - run/stop 2x Pushbutton switches, all 2pin: - all step switches (all go to 10 Alternative: Midi -> CV Alternative: CV from something else use a raspberry pi zero through hole 3.3mm, height 2.5, Wuerth electronics 9774030943 (https://katalog.we-online.de/em/datasheet/9774030943.pdf), generated with kicad-footprint-generator Connector Phoenix Contact connector footprint for: MC_1,5/5-G-3.5; number of pins: 16; pin pitch: 5.08mm; Angled; threaded flange || order number: 1843622 8A 160V.

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