I burn my arduino nano 😭 Answered
This is my very very very first arduino project. I followed the attached CDI schematic and tested it on breadboard by connecting USB cable to my computer to test LCD, Button Switch, Brake switch (D2 on nano), (except the relay) everything works fine, until i solder it and test it on my bike, after i turn on the ignition key switch +12v , and pulled the brake switch, the smoke come out from the nano (overheat ??? ) , and now got 2 red led light on nano, ( i think i already killed it 😅). Not sure where i done it wrong, can you guys give me some advice so i can correct it?