Model trains pick up electrical power from the rails ... The build uses an available Arduino library, so if you want to get into the protocol you’ll have to work through that code.

you mentioned Arduino, a DCC-connected programmable system. Is that like Java Model Railroad Interface (JMRI) software, and if so, how do the two compare? - Bruce Fogwell A: Hi, Bruce. Arduino isn ...

Removing the turntable and it’s requisite parts made plenty of room for the N-scale railroad (that’s really small stuff!). An Arduino with a motor shield drives the train around the loop.