/*
Blink

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

The circuit:
* LED connected from digital pin 13 to ground.

* Note: On most Arduino boards, there is already an LED on the board
connected to pin 13, so you don't need any extra components for this example.

Created 1 June 2005
By David Cuartielles

http://arduino.cc/en/Tutorial/Blink

based on an orginal by H. Barragan for the Wiring i/o board

*/

int ledPin =  13;    // LED connected to digital pin 13

// The setup() method runs once, when the sketch starts

void setup()   {               
// initialize the digital pin as an output:
pinMode(ledPin, OUTPUT);    
}

// the loop() method runs over and over again,
// as long as the Arduino has power

void loop()                    
{
digitalWrite(ledPin, HIGH);   // set the LED on
delay(500);                  // wait for a second
digitalWrite(ledPin, LOW);    // set the LED off
delay(300);                  // wait for a second
}