// LED Fade 
// by BARRAGAN <http://barraganstudio.com>

// Demonstrates the use of PWM pins (analog output) by dimming 
// a light (LED) from off to maximum intensity and back.

// Created 5 February 2004
// Revised 26 January 2008

int value = 0;                            // variable to keep the actual value 
int ledpin = 0;                           // light connected to analog pin 0

void setup()
{
  // nothing for setup 
}

void loop()
{
  for(value = 0 ; value <= 1023; value+=5) // fade in (from min to max)
  {
    analogWrite(ledpin, value);           // sets the value (range from 0 to 1023)
    delay(30);                            // waits for 30 milli seconds to see the dimming effect
  }
  for(value = 1023; value >=0; value-=5)   // fade out (from max to min)
  {
    analogWrite(ledpin, value);
    delay(30);
  }  
}
