/*
 fade_example.pde
 
 This example shows how to fade an LED using the analogWrite() function.
 
 BJFurman
 02APR2010
 based on Fading
 Created 1 Nov 2008
 By David A. Mellis
 Modified 17 June 2009
 By Tom Igoe
 
 http://arduino.cc/en/Tutorial/Fading
 
 */

const byte ledPin = 3;    // red RGB LED on Experimenter
const byte FADE_MAX = 255;  // max value for setting duty cycle
const byte FADE_INC = 5;  // increment for changing duty cycle

void setup()  { 
   Serial.begin(9600);
   pinMode(ledPin, OUTPUT); 
} 
void loop()  { 
  // fade in from min to max in increments of 5 points:
  int fadeValue;
  for(fadeValue = 0 ; fadeValue <= FADE_MAX; fadeValue +=FADE_INC) { 
    analogWrite(ledPin, fadeValue);         
    Serial.print("fading in value = ");
    Serial.println(fadeValue);
  } 
  // fade out from max to min in increments of 5 points:
  for(fadeValue = FADE_MAX ; fadeValue >= 0; fadeValue -=FADE_INC) { 
    analogWrite(ledPin, fadeValue);         
    Serial.print("fading out value = ");
    Serial.println(fadeValue);    
  } 
}