@rplst8 posted:If it's a center detent pot, I doubt one side is grounded. These pots are usually 20% tolerance, so it would be a crap shoot at knowing the voltage drop through the wiper. Since center is "off" it seems like it would need a better reference of the idle state.
Good point, but I think this is just an off the shelf linear pot by looks, made by Alpha, so it was my guess as to how the designers might have been thinking to do forward reverse and speed. IC looks a PIC or similar micros.
I just threw this in just as information. Really don't want this thread to veer off into the remote technical weeds (bottom line, it works for what it was designed to do at this price point). Lets keep it to postings that concern loco dimensions, mechanical, speed, failures, design oopsies etc
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