Hello, I’m using Ardiono MEGA for an RFID card system with a relay. My connections and program works just fine but after several usage of program Arduino stucks.I’m using a RFID RC522 Card reader for input. Can you Help me ?
Here is the video link below:
SOLVED: I give the + voltage to the relay from outside. External power fixed my problem.
Card Reader.ino (4.06 KB)