Flicker Sketch

This sketch uses an array of numbers to set the brightness of an LED with the analogWrite command. This sketch also introduces the random command to generate a random delay between each brightness level.

NOTE: This only works on those pins marked PWM (11, 10, 9, 6, 5, 3).

/*  Flicker Sketch

    Uses an array and a random delay

    to create a flicker effect.

*/

int ledPin = 9;

int randNumber;

byte flicker[] = {180, 30, 255, 200, 10, 90, 40, 150, 20, 60};

void setup()

{

  pinMode(ledPin, OUTPUT);

  randomSeed(millis());              // sets millis() as seed

}

void loop()

{

  for(int i=0; i<10; i++)            // loop equal to number

  {                                  // of values in array

    analogWrite(ledPin, flicker[i]); // write value of array

    randNumber = random(50, 250);    // random number from 50-250

    delay(randNumber);               // random delay

  }

}