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Back2.5mm, no annular m4 Mounting Hole 2.2mm, no annular, M2.5 mounting hole 4.3mm no annular Mounting Hole 4.3mm, no annular, M6, ISO14580 mounting hole position tweaks Messing around with panel title fonts Untested hardware and software — Do not connect the Normal 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.
- Rel="nofollow">d952ec97f3d5e1172c33dcefe438ee5d18f8d87d Start of LM13700 version to see.
- 1x28 1.00mm single row Through hole.