Arduino Uno with LCD/Buttons shield on a breakout board. the area occupied by "ca1" shows each test combination that is tried and whether there was conductivity (1) or not (0). ca was the last attempt ...

Arduino Transistor Controller Items needed * Transistor: 3 * Transformer(220v to 12v): 1 * Diode ‌bridge(Diode: 4): 1 * Capacitor(i use 16v 3300uF): 1 * Regulator 7812: 1 * Triac: 1 * Arduino(i use ...