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BackWhat 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 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 -> 23847 bytes Panels/FireballSpell_Large.webp | Bin 70804 -> 71304 bytes viewBox="0 0 8.5 11" d="m 2.1692854,6.5787405 h 0.622047 V 7.200788 H 2.3346394 2.1692854,7.0433077 Z" d="m 3.1141734,8.5472427 h 0.622047 V 9.1692902 H 3.2795274 3.1141734,9.0118099 Z" inkscape:export-filename="/home/rsholmes/Documents/Hobbies/Music/Instruments/Synths/Kassutronics/Precision ADSR/PrecADSRmod/Images/precadsr-panel-holes.png" /> inkscape:export-filename="/home/rsholmes/Documents/Hobbies/Music/Instruments/Synths/Kassutronics/Precision ADSR/PrecADSRmod/Images/precadsr-panel-art.png" /> d="M 0,458 H 166.141 V 0.98 0,0.98 Z" /> d="M 0,458 H 166.141 V 0.98 0,0.98 Z" /> d="M 0,0 H 167 V 458 H 0 Z" /> d="M 0,0 5,-5 -12.5,0 5,5 Z" d="M 0,457.02 H 166 V 0.02 H 0 40 Y N 1 F N DEF SW_MEC_5G_LED SW 0 0 Y N 1 F N DEF SW_DIP_x01 SW 0 40 Y N 1 F N DEF SW_SPDT_MSM SW 0 40 Y N 3 F N DEF SW_E3_SA3216 SW 0 40 Y Y 1 F N DEF SW_Reed_Opener SW 0 40 Y N 1 F N DEF SW_Push_Open_Dual_x2 SW 0 0 Y N 1 F N DEF SW_Push_Dual_x2 SW 0 40 Y N 1 F N DEF SW_Push SW 0 0 Y N 1 F N DEF SW_DIP_x06 SW 0.
- J 0 40 Y N 2.
- 9.964600e-01 8.406740e-02 -2.572556e-04 facet normal 2.129188e-001 -3.650230e-001.
- Normal -3.776370e-001 6.477720e-001 6.616508e-001.