#include <Arduino.h>

#define STEP_PIN 19
#define DIR_PIN 18
#define EN_PIN 23

void setup() {
  pinMode(STEP_PIN, OUTPUT);
  pinMode(DIR_PIN, OUTPUT);
  pinMode(EN_PIN, OUTPUT);

  digitalWrite(DIR_PIN, HIGH);  // set initial direction
  digitalWrite(EN_PIN, LOW);   // ENable driver
}

void loop() {

  // Rotate 200 steps (1 full revolution for most steppers)
  for (int i = 0; i < 200; i++) {
    digitalWrite(STEP_PIN, HIGH);
    delayMicroseconds(2000);
    digitalWrite(STEP_PIN, LOW);
    delayMicroseconds(2000);
  }

  delay(1000); // wait 1 second

  // Reverse direction (optional)
  digitalWrite(DIR_PIN, !digitalRead(DIR_PIN));
}