====== X10 Interfacing ====== ===== X10 Mini Timer power supply ===== The LCD display seems to die after a few years (on three units I've used) so I figured out the pinout. 4N35's are used internally for opto-isolation, The power is from a transformer internally, with a rectifier and a capacitor. {{ :projects:electronics:x10:rj9_x10_timer_diagram.png?nolink|}}