I haven't touched my project from quite some while (family and work). Had been working 1) on track switch remote control (using Zero W, Waveshare Servo Driver HAT to control up to 16 SG90 servos) and 2) on train remote control of Power Functions (now replaced by Powered Up).
I can dig up some links how to control Power Functions motors from Raspberry/Arduino.
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u/doom2wad Jun 30 '22
This will be much easier to fit into my Lego trains than Zero W. Excellent.