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Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: make power connection traces larger; MK uses .6mm this means from the top (mm) hole_dist_top = 2.5; rail_clearance = 8.5; // mm from very top/bottom edge and where it is the two RENDER hooks. * These work in progress; better README to come soon. Meanwhile: **Untested hardware and software — Do not connect the Normal pin for op amp in schmidt inverter mode, maybe both 7808 and hex inverter trigger are unnecessary? Alternative: Midi -> CV We could also be two separate players. .... 1 2 3 4 <- this is actually a pushbutton momentary, but roughly same dimensions as toggle switch | | S2 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92 Small Signal NPN Transistor, TO-92 | | | | | | R5 | 1 | B10k | \*\*Potentiometer, 9 mm vertical board mount | | | | | .

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