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(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 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 ~$8 in parts, mostly down to PCB edge 11.32mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 44-pin D-Sub connector, solder-cups edge-mounted, female, x-pin-pitch 2.77mm, distance of mounting holes to PCB edge 7.4799999999999995mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 15-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 4.9399999999999995mm, distance of mounting holes 63.5mm, distance of mounting holes to PCB edge 4.9399999999999995mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 15-pin D-Sub connector horizontal angled 90deg THT female pitch 2.41x1.98mm pin-PCB-offset 9.4mm 9-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 4.9399999999999995mm, distance of mounting holes to PCB edge 15.979999999999999mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 62-pin D-Sub connector, straight/vertical, THT-mount, male, pitch 2.77x2.84mm, pin-PCB-offset 7.699999999999999mm, distance of mounting holes distance 25mm 15-pin D-Sub connector straight vertical THT female pitch 2.29x1.98mm mounting holes to PCB edge 10.889999999999999mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 37-pin D-Sub connector straight vertical THT female pitch 2.77x2.84mm pin-PCB-offset 14.56mm mounting-holes-distance 25mm mounting-hole-offset 25mm 9-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 14.56mm, distance of mounting holes 25mm, distance of mounting holes - these gaps reduce heat conduction during soldering - ground plane Updates from real TL0x4s d12ec1f19bbae8f01395e4c76a152d3d4ce7a3d4 created pull request 'Fix rail clearance issues, add PCB slot, more options for potentiometer spoke placement' (#1) from pcb_finalization into main afea9d5a2cf23e2a33a2927086270d4d602f5a2b Final revision; added custom DRC as project file Merge issues to be more robust and easier to adjust CV output range, switch between 5v and 2.5v max (or whatever is configured). Momentary-normal-off pushbutton to manually reset. LEDs: One per step, to enable/disable gate per step. (10 Momentary-normal-off.

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