#include <AccelStepper.h>

// STEP pin, DIR pin
AccelStepper stepper(AccelStepper::DRIVER, 4, 6);

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
  
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH);

  stepper.moveTo(1);
  stepper.runToPosition();
  delay(500);
  
  digitalWrite(LED_BUILTIN, LOW);
  
  stepper.moveTo(-1);
  stepper.runToPosition();
  delay(500);
}