#define DIR_PIN 2
#define STEP_PIN 3
void setup() {

  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(DIR_PIN, OUTPUT);
  pinMode(STEP_PIN, OUTPUT);
  digitalWrite(STEP_PIN, LOW);
}

void loop() {

  digitalWrite(LED_BUILTIN, HIGH);
  delay(100);
  digitalWrite(LED_BUILTIN, LOW); 
  delay(100);
  
  digitalWrite(DIR_PIN, HIGH);
  for(int i = 0; i < 200; i++){
    digitalWrite(STEP_PIN, HIGH);
    delayMicroseconds(1000);
    digitalWrite(STEP_PIN, LOW);
    delayMicroseconds(1000);
  }
  delay(1000);

  digitalWrite(DIR_PIN, LOW);
  for(int i = 0; i < 200; i++){
    digitalWrite(STEP_PIN, HIGH);
    delayMicroseconds(1000);
    digitalWrite(STEP_PIN, LOW);
    delayMicroseconds(1000);
  }
  delay(1000);

}