int x;
void setup() {
  pinMode(9, OUTPUT); // set Pin9 as PUL
  pinMode(8, OUTPUT); // set Pin8 as DIR
  pinMode(12, OUTPUT);
}
void loop() {
  digitalWrite(8, HIGH); // set high level direction
  for (x = 0; x < 400; x++) // repeat 400 times a revolution when setting 400 on driver
  {
    digitalWrite(9, HIGH); // Output high
    delayMicroseconds(500); // set rotate speed
    digitalWrite(9, LOW); // Output low
    delayMicroseconds(500); // set rotate speed
  }
  delay(900); //pause 1 second
  digitalWrite(8, HIGH); // set high level direction
  for (x = 0; x < 400; x++)
  {
    digitalWrite(9, HIGH);
    delayMicroseconds(500);
    digitalWrite(9, LOW);
    delayMicroseconds(500);
  }
  //relay on
  digitalWrite(12, HIGH);
  delay(100);
  //relay off
  digitalWrite(12, LOW);
  delay(900);
}