const int Dir = 26;
const int Step = 27;
const int steps_per_rev = 2000;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(Dir, OUTPUT);
  pinMode(Step, OUTPUT);
}

void loop() {
  digitalWrite(Dir, HIGH); // Clockwise

  for (int i = 0; i < steps_per_rev; i++) {
    digitalWrite(Step, HIGH);
    delayMicroseconds(1000);
    digitalWrite(Step, LOW);
    delayMicroseconds(1000);
  }

  delay(2000);

  digitalWrite(Dir, LOW); // Counter Clockwise

  for (int i = 0; i < steps_per_rev; i++) {
    digitalWrite(Step, HIGH);
    delayMicroseconds(1000);
    digitalWrite(Step, LOW);
    delayMicroseconds(1000);
  }

  delay(2000);
}