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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 the 16-pin connectors, consider incorporating additional LED indicators for active use of gate and CV routing updates led holes to PCB edge 11.32mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 62-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 14.56mm, distance of mounting holes 47.1mm, distance of mounting holes with circular drills, http://www.alps.com/prod/info/E/HTML/Encoder/Incremental/EC11/EC11E15204A3.html Alps rotary encoder, PEC12R, with switch, vertical shaft, mounting holes 33.3mm, distance of mounting holes to 5mm + unplated, and revises jack footprint 16c50fa0a8 Add pulldown resistors for reset debounce cap; formatting Add pulldown resistors for reset debounce cap; formatting 2c2abd8837 checkpoint before trying to fit in glide controls 53c46eece113c24bce671b9108c3f713b2229189 Final-ish tweaks.

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