So now that I had assembled the hardware, it was firmware time. I wanted to send an address:direction:speed string (eg “A001:F:S3”) over the serial connection to the Arduino, and have the Arduino ...

An Arduino based DCC controller built to communicate with the base station over serial. - Releases · shane-powell/Arduino-DCC-Controller ...

There are actually quite a few basic Arduino videos on the channel, although most of them are aimed at beginners. However, the DCC — Digital Command and Control — might be new to you if you ...

So that needed to go as well. In its place is a homebrew speed controller made with three parallel MOSFETs and an Arduino to read the analog value from the throttle and convert that into a PWM signal.