Blinking LED - Arduino

Running Arduino's First Program (Blinking LED)

Tutorial Video

Practical Video

See Also: Arduino Development Platform

Arduino Sketch

/* Program of BLINKING in-built LED in Arduino

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

  Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO

  it is attached to digital pin 13

*/

void setup() {

  // initialize digital pin LED_BUILTIN as an output.

  pinMode(LED_BUILTIN, OUTPUT);

}

// the loop function runs over and over again forever

void loop() {

  digitalWrite(LED_BUILTIN, HIGH);  // turn the LED on (HIGH is the voltage level)

  delay(1000);                      // wait for a second

  digitalWrite(LED_BUILTIN, LOW);   // turn the LED off by making the voltage LOW

  delay(1000);                      // wait for a second

}

See Also: Arduino Development Platform