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BackOther material, in a circuit outside the full dev board (in some cases) Arduino + DAC https://www.youtube.com/watch?v=t3kUPjdiq0o for explainer https://drive.google.com/drive/folders/156nn9rClRLJplS4M46s56-Pibi86Z-Kp for schematics and .ino file uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on either internal or external clock sources cycle between 0v and 5v max // gate out (j4/j10) // clock in (j2/j11 // casc out (j14/j15) // reset/casc in (j1/j13 // gate out (j4/j10) // clock in (j2/j11 // casc out (j14/j15) // reset/casc in (j1/j13 // gate out // CV out - could be other values, ceramic may work, test debouncing. Maybe enlarge footprint if needed. Subject: [PATCH 18/18] Final revision; added custom DRC as project file Fireball/Fireball.kicad_dru.
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