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Https://www.schmitzbits.de/ms20.html which is what MK uses a CA3080 OTA, an expensive and rare chip these days ($3/ea on amazon, maybe fakes) VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules 811ef45c764021f623b8bb59234df1314fce4e91 12V, -12V and ground needed, probably up to 1amp https://www.youtube.com/watch?v=pQKN30Mzi2g - maybe not as efficient as a vendor? 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 Deleting the wiki page "Printing Knobs And Widgets' Latest commits for file Fireball/Fireball.kicad_sch Added input resistor for sync; placed everything on PCB with on-board components hard_sync traces added but maybe won't keep From 52a9fa26f6a6a8c4f7e3fc085f8b6ccdd7541277 Mon Sep 17 00:00:00 2001 Subject: [PATCH] Notes from MK's PCB livestream Notes from debugging Latest commits for file Examples/EG_MANUAL.pdf schematic start, and some example modules f80e4975fb checkpoint before getting really weird with WireIt dd8c61c34f A couple more minor clearance tweaks 68726f9fe0 Delete '3D Printing/AD&D 1e spell names in Filmoscope Quentin/Panels/MIRROR IMAGE.png.

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