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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 the front panel candidates v1 and v2

Added schmancy pcb for v2 front panel to integer pseudo-origin, remove testing text, decrease title label font size to 9mm and align it precisely for repeatability Align panel to integer pseudo-origin, remove testing text, decrease title label font size to 9mm and align it precisely for repeatability b11a8d3187 Change transistor footprint to inline_wide, fix DRC ground plane Updates from real TL0x4s Merge pull request synth_mages/MK_VCO#5 Add.

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