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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 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 0 -> 168419 bytes Images/retrigger.png | Bin 10724 -> 0 bytes From 2bb058d5715f395d3571ea05d3008566787a2bdb Mon Sep 17 00:00:00 2001 .../Panels/FIREBALL VCO.png | Bin 0 -> 30552 bytes From eb8580ef62e5093762f6f99c41c22539aaadf737 Mon Sep 17 00:00:00 2001 .../Panels/MAGIC MOUTH.png | Bin 0 -> 15005 bytes Panels/FireballSpellVertVerySmall.png | Bin 0 -> 16700 bytes .../SPIDER CLIMB.png | Bin 0 -> 11692 bytes .../HOLD.

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