arduino/Blink/Blink.pde

   1 /*
   2   Blink
   3
   4  Turns on an LED on for one second, then off for one second, repeatedly.
   5
   6  The circuit:
   7  * LED connected from digital pin 13 to ground.
   8
   9  * Note: On most Arduino boards, there is already an LED on the board
  10  connected to pin 13, so you don't need any extra components for this example.
  11
  12
  13  Created 1 June 2005
  14  By David Cuartielles
  15
  16  http://arduino.cc/en/Tutorial/Blink
  17
  18  based on an orginal by H. Barragan for the Wiring i/o board
  19
  20  */
  21
  22 int ledPin =  13;    // LED connected to digital pin 13
  23
  24 // The setup() method runs once, when the sketch starts
  25
  26 void setup()   {
  27   // initialize the digital pin as an output:
  28   pinMode(ledPin, OUTPUT);
  29 }
  30
  31 // the loop() method runs over and over again,
  32 // as long as the Arduino has power
  33
  34 void loop()
  35 {
  36   digitalWrite(ledPin, HIGH);   // set the LED on
  37   delay(1000);                  // wait for a second
  38   digitalWrite(ledPin, LOW);    // set the LED off
  39   delay(1000);                  // wait for a second
  40 }