You measure and show me a schematic for the QRE1113 version, I'll do the board design and post it. I'll make it a share on OSHPark so anyone can find it. I figure we'll add the resistor and a trace around it, for LocoSound you add the resistor and cut the trace. It'll be useful for me, I have lots of the QRE1113 sensors, and I won't have to look for tach boards any more.
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