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Y="3.7"/> <-- CV In main MK_VCO/Panels/fireball_vco_14hp_v1.scad 330 lines width = 24; // [1:1:84] // Four hole threshold (HP cv_in = [h_margin, row_1, 0]; triangle_out = [width_mm-h_margin-working_width/4, row_1, 0]; fm_in = [h_margin+working_width/8, row_2, 0]; } // draw a "vertical" wall to mount 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.

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