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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 example modules f80e4975fb checkpoint before getting really weird with WireIt dd8c61c34f A couple more minor clearance tweaks 9e7b04561b Add ground fills, fix some clearance issues, make all power traces large 8576ad9482 Added input resistor for sync; placed everything on PCB with on-board components c6741b48f0 More random files main MK_VCO/Panels/luther_triangle_vco_quentin_v4.scad 303 lines default_label_font = "Futura XBlk BT:style=Extra Black"; $fn=FN; /* [Panel] */ width = 36; // [1:1:84] /* [Holes] */ // Whether to create a dial, protruding from the top of knob. "Recessed" type can be used to endorse or.

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