How can I use an Arduino on a model railroad?

A small, square, blue circuit board labeled “Arduino Uno”

Q: In your Ask MR question “Is there a way to automatically slow DCC locomotives?” 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’t software — it’s hardware. An Arduino is a tiny computer, […]

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