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Pin header, 2.54 mm, 1x4 Light emitting diode | Tayda | A-559 | | | | | Tayda | A-1157 or A-2425 | | Tayda | A-3588 | | J12 | 1 | SW_Push | Push button switch, normally closed, generic, four pins D Push button switch, normally closed, generic, four pins D Push button switch Off-On CuK sub miniature slide switch, EG series, SPDT, https://www.ckswitches.com/media/1428/os.pdf tactile switch SPST LED OFF-ON lamp D Single Pole Single Throw (SPST) switch, small symbol D Push button switch, generic, separate symbols, four pins D Push button switch, normally closed, generic, four pins D Momentary Switch, dual pole double throw | | Tayda | A-159 | | | | | | | | | | | R2, R5 | 1 | SW_SPDT | Switch, dual pole triple throw, 3 position switch, SP3T K switch dp3t ON-ON-ON D Switch, three position, single pole double throw | | | | | | | R1, R2 | 2 ; DRILL file {KiCad 5.1.10-88a1d61d58~90~ubuntu20.04.1} date Sat Aug 7 10:22:31 2021 e6b834b08c Fix floating pin for op amp in schmidt inverter mode, maybe both 7808 and hex inverter trigger are unnecessary? Alternative: Midi -> CV Alternative: CV from something else VCF MK's Diode Ladder VCF 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 the right to modify this Agreement. ## Exhibit A .

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