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it worked. I guess I got hung up in my thinking about one rail being + and the other -. doh. thanks for getting my head "out of that mode".

ok. will try that. thanks.

ok. This is what I am thinking. Connect Vcc to left rail connector, left rail connecter to collector of transistor. Connect Gnd to emitter of transister, and from there to right rail connector. Connect Diode between left rail connector and right rail connector. sort of like this: (I am not a...

I am currently making a clock that is tied to a Z scale railroad. I hope my explanation is clear: I will be using a Raspberry Pi to run the railroad once per hour on the hour. Normally, the schematic for running a motor (and that is essentially what I will be doing by supplying power to the...