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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 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** 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 gate. If nothing is plugged into it. - Manual one-step-forward via momentary push button. CV out, with probably +12v gates. Variable step count, 1-10 steps possible (with 2-3 extra switch positions to re-use for frequently-swapped positions). External reset via socket. - External reset via momentary push button. - CV in controls the clock oscillilator an external CV-to-pulse-rate module? Is this even useful? Seven-segment display. Can be done, but requires a trigger-sized pulse on input. Portamento (aka slew rate controller aka glide). Knob version fairly simple. - CV Range - Once/Cont When in Cont mode shorts Casc Out - 1K to U3-7 Glide section not working right, just pegging the output jacks working_height = height - v_margin*2 - title_font_size; Experimenting with more panel layout ideas left_rib_x = hole_dist_side + thickness; right_rib_x = width_mm - thickness; // column from edge plus hole radius //calculated x value of exact middle of slider panel (between steps 5 and 6); middle of slider panel (between steps 5 and 6 // manual step (sw13) // 1 for run/stop (sw14 h_wall(h=4, l=slider_spacing*10-1, th=1); v_wall(h=4, l=height-rail_clearance*2-thickness, th=thickness*1.25); v_wall(h=4, l=height-rail_clearance*2, th=right_rib_thickness); //outline of whole PCB cube([137.5, 97, 1], center=true); echo("Putting a hole with radius: ", hole_r , " at ", hole_dist_side, height - v_margin; working_increment .

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