const int stepA = 5; // stepper A
const int dirA = 4;  // stepper A

void setup() {
  pinMode(stepA, OUTPUT);
  pinMode(dirA, OUTPUT);
  Serial.begin(9600);
}

void loop() {

  Serial.println("Forward");
  digitalWrite(dirA, HIGH);
  for (int i = 0; i < 200; i++) 
    {
       digitalWrite(stepA, HIGH);
       delayMicroseconds(2000);
       digitalWrite(stepA, LOW);
      delayMicroseconds(2000);
    }
}