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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 main 5a4e89eea6 Add position for resistor between coarse and +12V, value unknown 5a4e89eea63bf71c8fd68e1168f096dfb3459aa4 More cleanup Schematics/Fireball.kicad_sch | 4790 Schematics/Fireball_VCO.pdf | Bin 16369 -> 0 bytes Latest commits for file Schematics/resistor_keyboard.diy 16055f0ae5 Delete 'Panels/futura medium bt.ttf' 4d5fa6d903 Delete 'Panels/futura light bt.ttf' Futura BT font files 4f2a34f676 's take on FIREBALL VCO using AD&D 1e spell names in Filmoscope Quentin/COLOR SPRAY.png Normal file View File Latest commits for file Datasheets/2N3903-Motorola.pdf # Autorouter files (exported from Pcbnew # Exported BOM files All-in-one module with lots of analog drum voices; based heavily on Moritz Klein's schematic, with features added from Skull and Circuit's VCA v1.3. D952ec97f3 Go to file d5bfb6e27b 's notes on repique/caixa, two or three for surdos row_2 = row_1 + v_margin .

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