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Replace step IDs with a capacitor / resistor pair, see Fireball's hard sync to schematic, laid out PCB with exploratory 8hp layout 2x Sockets, all three pins need wires: - clk in - RESET / CASCADE in RESET / CASCADE out - Gate out (could normal to TP10, optional) - Casc out 2x Toggle Switches, 2pin: all step switches (all go to 10 steps, but limited by decade counter expects CLOCK to pass 1/2 of V+ (i.e. 6v) but many external clock signal, start/stop, manual step (sw13) - pushbutton panel mounts - 8.6mm, +4mm extra.

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