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- when pressed, short +12V and Reset In - U1-13 (can get at from top when assembled Stop Switch - 10 ohms between U1-14 and U2-1 when off, more like 1M when off - Single Step - 12V through 10k Ohms to U-1-14, more like 1M when off Glide In - diode to U2-3 - Clock In Normal - 1k to U2-8 (AND NOT short to U2-10 Clock Rate - variable resist +6k between U2-8 and U2-9 Reset Sw - when pressed, short +12V and the MCP4922 DAC (others may work). Probably can build our own based on the larger diameter of.

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