// Define pin numbers
const int dirPin = 1; // direction
const int stepPin = 2; // step
const int enaPin = 3; // enable

void setup() {
  // Define all pins at output
  pinMode(stepPin, OUTPUT);
  pinMode(dirPin, OUTPUT);
  pinMode(enaPin, OUTPUT);

  // Enable the motor driver
  digitalWrite(enaPin, LOW);
  
  // Set the rotation to one particular direction
  digitalWrite(dirPin, HIGH);
}

void loop() {

  // Perform 1000 steps with few us delay -> fast
  for (int x = 0; x < 1000; x++) {
    // Generate a pulse
    digitalWrite(stepPin, HIGH);
    delayMicroseconds(400);
    digitalWrite(stepPin, LOW);
    delayMicroseconds(400);
  }

  delay(1000); // Wait for a second


  // Perform 1000 steps with intermediate us delay -> medium
  for (int x = 0; x < 1000; x++) {
    // Generate a pulse
    digitalWrite(stepPin, HIGH);
    delayMicroseconds(800);
    digitalWrite(stepPin, LOW);
    delayMicroseconds(800);
  }

  delay(1000); // Wait for a second

  // Perform 1000 steps with many us delay -> slow
  for (int x = 0; x < 1000; x++) {
    // Generate a pulse
    digitalWrite(stepPin, HIGH);
    delayMicroseconds(1200);
    digitalWrite(stepPin, LOW);
    delayMicroseconds(1200);
  }

  delay(1000); // Wait for a second

}