/*
  This is modified from the code Blink  by Scott Fitzgerald
  It turns a device connected to a specified pin on and off for set durations repeatedly.
 */


// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin 1 as an output.
  pinMode(1, OUTPUT);
  
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(1, HIGH); // activate pin # 1
  delay(random(500,1500)); // duration on - vibrate for a random period between 0.5-1.5 sec
  digitalWrite(1, LOW); // deactivate pin # 1
  delay(random(500,1500)); // duration off - turn off vibration for a random period between 0.5-1.5 sec     
 }