Simpler programs

/* Blinking LED
* 

* turns on and off a light emitting diode(LED) connected to a digital
* pin, in intervals of 2 seconds. Ideally we use pin 13 on the Arduino
* board because it has a resistor attached to it, needing only an LED

* Created 1 June 2005
* copyleft 2005 DojoDave <http://www.0j0.org>
* http://arduino.berlios.de

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

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

void setup()

pinMode(ledPin, OUTPUT);      // sets the digital pin as output

void loop()

digitalWrite(ledPin, HIGH);   // sets the LED on
delay(1000);                  // waits for a second
digitalWrite(ledPin, LOW);    // sets the LED off
delay(1000);                  // waits for a second