gunrunnerjohn posted:...
Perhaps an even better solution is the ngineering.com lighting effects modules. https://www.ngineering.com/lig...amp;%20highways.htm, about halfway down the page.
Link has an extra comma at end.
https://www.ngineering.com/lig...&%20highways.htm
GRJ makes a good suggestion in that module. You could then use a hall-sensor or reed switch to detect motion from a tiny disc magnet fastened to the inside of a wheel.