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D Push button switch, normally closed, generic, four pins D Push button switch, generic, two pins | Dailywell | PAS6B3M1CESA3-5 or PAS6B3M1CESA2-5 | Tayda | A-1847 | | | R24, R26, R28 | 3 | 1k | Resistor | | | Tayda | A-1955 | | | | | | | | | | | | Tayda | A-2939 | | C7, C11 | 2 Hardware/lib/Kosmo_panel | 2 pin Molex header 2.54 mm spacing | Tayda | A-159 | | D1, D2 | 2 .../Unseen Servant/Unseen Servant.kicad_prl | 4 | 100 nF | Unpolarized capacitor | | | | | | J3 | 1 | SW_DPDT_x2 | Switch, dual pole double throw | | | C1 | 1 Kosmo_panel | 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 Pause (J19/J18); the schematic is incorrect - the current 12-position rotary switches are actually 2p6t, which means only six different step counts are available until the replacement arrives Wiring SW15 (once/stop) and cascade out is easier done via skywiring; only one tl074 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 a stem to form a mushroom shape. Enable_stem = false; // Radius to use.

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