/* Stepper Motor A4988 Driver Example */
pulsedemo(uint16_t time){
  digitalWrite(4, HIGH);
  delay(time);
  digitalWrite(4, LOW);
  delay(time);
}
void setup() {
  pinMode(2, OUTPUT);
  pinMode(4, OUTPUT);
}
void loop() {
  uint8_t count=200;
  digitalWrite(2, HIGH);
  while(count>0)
  {
    pulsedemo(50);
    count--;
  }
  digitalWrite(2, LOW);
  while(count<200)
  {
    pulsedemo(200);
    count++;
  }
}