#include <Stepper.h>
#define MOT_1 7
#define MOT_2 8
#define MOT_3 9
#define MOT_4 2
int steps = 2048;
Stepper motor(steps, MOT_1, MOT_3, MOT_2, MOT_4);

void setup() {
  motor.setSpeed(9);
}

void loop() {
  motor.step(200);
  motor.step(-200);
  delay(10);
}