@gunrunnerjohn posted:If you're looking to run a small DC motor for the exhaust fans, I suspect there's easier ways to get them running that is documented. If you wanted them to run when the locomotive is moving, I have a little board that will do that.
That’s really all I’m going for.
only thing on this board I bought during the part sale was the serial input. I found the Ser In pin but no idea where the serial ground would go. The GND on that plug was frame GND we all know that’d be bad.