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// 13 SPDT switches: // 1 hp from side to center of hole, with a hair of margin 76dd29636a Checkpoint in case of crashes Fix getting a bunch of wires backwards Fix getting a bunch of wires backwards Fix getting a bunch of diodes and support Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** 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.

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