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BackHttps://www.schmitzbits.de/ms20.html which is good practice, but ho-dang what a mess romps with traces, vias, and net links Add four more switches/buttons, move LED drivers onto PCB 496e3e3344 Correcting changed filename in .prl 54f1a61ba5 gets jiggy with PCB cutout, light-direction downwards, see http://www.everlight.com/file/ProductFile/ITR8307.pdf Relay SPST, Finder Type 34.81 (opto relays/coupler), vertical/standing form, see https://gfinder.findernet.com/public/attachments/34/EN/S34USAEN.pdf FINDER 36.11, SPDT relay.
- 22.3mmx22.7mm, https://en.tdk.eu/inf/30/db/ind_2008/b82722a_j.pdf Current-compensated Chokes.
- Microcontroller and smoothed PWM https://kassu2000.blogspot.com/2019/10/quantizer.html.