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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 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; // If you want a large timer-knob style pointer? TimerKnob=0; // [0:No, 1:Yes] // 0 if indicator faces notch, 180 if it can fit; losing the bodge area. Don't put R8 so close to R26 - D36/R47 too close Testing before powering up: Clock In Normal - 1k to U2-8 (AND NOT short to U2-10 - Clock POT is too small; need more than 100k to get 1:1 between schematic and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc3fahr2 A Series, 3 pole XLR female receptacle with 6.35mm (1/4in) stereo jack, switched, half threaded nose, https://www.neutrik.com/en/product/nrj6hh Slim Jacks, 6.35mm (1/4in) switching stereo jack and switching ground contact, vertical PCB mount, retention spring, https://www.neutrik.com/en/product/ncj5fi-v Combo A series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3fbh1-da B Series, 5 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, retention spring, https://www.neutrik.com/en/product/ncj10fi-h Combo I series, 3 pole female XLR receptacle, grounding: mating connector shell and front panel, vertical PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc3faah2-0 AA Series, 3 pole XLR female receptacle with 6.35mm (1/4in) stereo jack, metal nose, gold plated contacts, fully threaded nose, sleeve contact/front panel connection, https://www.neutrik.com/en/product/nrj6hf-1 Slim Jacks, 6.35mm (1/4in) mono jack without switching contact, horizontal PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3fah2-da A Series, 3 pole male XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, steel retention lug, horizontal PCB mount, https://www.neutrik.com/en/product/nc3mbh B Series, 3 pole XLR female receptacle with 6.35mm (1/4in) stereo jack, vertical PCB mount, https://www.neutrik.com/en/product/nc3mav B Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell to pin1 and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc4fbv A Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, vertical PCB mount, retention spring, https://www.neutrik.com/en/product/ncj6fa-v-0 Combo A series, 3 pole XLR female.

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