Example Code for Arduino-Blinking a LED

Last revision 2026/01/08

Turns on an LED on for one second, then off for one second, repeatedly.

Wiring Diagram

Sample Code

/*
 # Description:
 # Turns on an LED on for one second, then off for one second, repeatedly.
*/
int ledPin = 10;
void setup() {
        pinMode(ledPin, OUTPUT);
}
void loop() {
        digitalWrite(ledPin,HIGH);
        delay(1000);
        digitalWrite(ledPin,LOW);
        delay(1000);
}

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