YouTube content creator AlmightyArjen had a problem: how could he stop his LEGO model trains smashing into each other at level crossings? The answer, of course, is to mod in an Arduino to automate ...

An Arduino with a motor shield drives the train around the loop. A reed sensor below a section of track provides feedback on where the locomotive is in the circuit.

Posted in Arduino Hacks, classic hacks Tagged arduino, model trains, reed switch, semaphore ← Hackaday Links: Leap Day, 2012 Wardriving For Zigbee → ...