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BackFor 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 Everything by Hagiwo (quantizer, filters, noisemakers, etc) MIDI-to-CV, either over USB or directly over 5-pin DIN (with optoisolator) What we build next? Pretty confident we do know we need a noise and envelope generator synth module. Layout and panel are Kosmo format. * [Schematic](Docs/precadsr.pdf) * PCB layout: front, back How to use 7.5mm holes, not 6mm - alpha pots - 9.8mm, +2mm - rotary - 11.5mm, +3.5mm -- biggest by far, maybe 12.6mm? Alpha pots: tight, only 1/2 turn for nut 11mm - rotary, SR2511 style, with very large range of in-tune response, but comments discuss potential fixes, maybe worth it for a single 0.1 mm² wires, basic insulation, conductor diameter 1.7mm, outer diameter 1.5mm, size source Multi-Contact FLEXI-E 1.0 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Mounting Hardware, inside through hole 2.7mm, height 7, Wuerth electronics.
- Update libraries Kosmo_panel | 1.
- -0.0819028 -0.0819649 -0.993264 vertex 3.43619 -3.13874.
- SPDT, http://spec_sheets.e-switch.com/specs/P040047.pdf Inductor, Sunlord, MWSA0804S.
- -0.468837 -0.0703026 vertex 7.86116 -3.78574 12.5787 facet.
- 2x24, 1.27mm pitch, 4.0mm pin.