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Write a program to Blink default Light Emitting Diode(LED) on Arduino board with the delay of 2 sec.

Last Updated : 16 Jul 2025

Solution: 

void setup(){
     pinMode(13,OUTPUT); // LED = pin 13
}

void loop(){
   digitalWrite(13,HIGH); // Turn on the LED
   delay(2000);          // Wait for 2 seconds
   digitalWrite(13,LOW);  // Turn off the LED
   delay(2000);          // Wait for 2 seconds
}
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