Following a presentation I made on the September 2023 NRail.org ZoomTRAK meeting, I’ve written up a pair of new pages for this blog about my example design of an Arduino-based train speedometer, which is designed to measure and display the scale speed of a passing model train, with configurable scale (1:87, 1:160, …) and measured units (km/hr, mph, …). The pages can be found at these links.
model railroad electronics 