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Using Arduino (nano or uno) + MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another fairly simple one, using Arduino (nano or uno) + MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another version Alternative: CV from something else VCF MK's Diode Ladder VCF Kassutronic's KS-20 VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some supporting components. ~$6 in parts, depending mainly on whether 8+6 pins + hardware fits on shaek board or similar size perf. MiniADSR derived from the centerline of the set screw hole. ≥30 means "round, using current quality setting". /* [Top Rounding (optional)] */ // Four hole threshold (HP // margins from edges v_margin = hole_dist_top*2; width_mm = hp_mm(h); } else { cube([12.25, 19.25, thickness]); } module mounting_hole_m3(h=thickness, flange=8, style="nut"){ cube([flange, flange, h], center=true); if (style == "nut"){ From 76dd29636a4f24671e78194743554d11ed4d24e9 Mon.

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