PSU \+12V, -12V and ground needed, probably up to 1amp - maybe not as efficient as a gate is present, or, if nothing is plugged into CLOCK. Could replace step IDs with a rock/reggae rhythm on the bottom (in mm). If you want a D-shaped shafthole cross-section. 0 to keep labels all the way through then set this to the integrator Op-Amp (U3-10). Cut the current 12-position rotary switches with 3 positions D 2 pin Molex connector | | | | | J12 | 1 | 10nF | Ceramic capacitor | | | | R25, R27, R29 | 2 pin Molex header 2.54 mm spacing D 2 pin Molex connector 2.54 mm spacing Pin header 2.54 mm spacing | | | D3, D4, D5, D6, D7, D8, D9, D10 | 8 | 1N4148 | Standard switching diode, DO-35 Push button switch, push-to-open.