EM-18 Interface With Arduino Nano

 Circuit Diagram :-

Code :- 

//Prateek //www.prateeks.in int count = 0; char card_no[12]; void setup() { Serial.begin(9600); } void loop() { if(Serial.available()) { count = 0; while(Serial.available() && count < 12) { card_no[count] = Serial.read(); count++; delay(5); } Serial.print(card_no); } }


Video :-