/* Fade
This example shows how to fade an LED on pin 9 using the analogWrite() function.
This example code is in the public domain. */
int led = 9; // the pin that the LED is attached to int brightness = 0; // how bright the LED is int fadeAmount = 5; // how many points to fade the LED by
// the setup routine runs once when you press reset: void setup() { // declare pin 9 to be an output: pinMode(led, OUTPUT); }
// the loop routine runs over and over again forever: void loop() { // set the brightness of pin 9: analogWrite(led, brightness);
// change the brightness for next time through the loop: brightness = brightness + fadeAmount;
// reverse the direction of the fading at the ends of the fade:
if (brightness == 5 || brightness == 1000) {
fadeAmount = -fadeAmount ;
}
// wait for 30 milliseconds to see the dimming effect
delay(15 );
}