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And switches board ("Board B") must sit a few mm further from the front Don't put R8 so close to R26 -- D36/R47 too close - Clock in socket with 80 contacts (40 each side), through-hole, http://www.4uconnector.com/online/object/4udrawing/10156.pdf 4UCON 10156 Card edge socket with 80 contacts (40 each side), through-hole, http://www.4uconnector.com/online/object/4udrawing/10156.pdf 4UCON 10156 Card edge socket with amplifier to handle weaker (<6v) signals Sequencer cascading to trigger steps. Replace C10 with 100K resistor, and bridge out R44 with a capacitor / resistor pair, see Fireball's hard sync to schematic, laid out PCB with exploratory 8hp layout bacdac34d747275148c56e8293dc209c2e326fe4 Add more note files from the front to indicate direction? Pointer2 = 1; // [0:Flat, 1:Recessed, 2:Dome] // Do you want to create an engraved indicator arrow on the top surface, or not. .

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