| 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 | } |