#include <Stepper.h>

const int SpeedPerRev = 200;
Stepper myStepper(SpeedPerRev, 8, 9, 10, 11);

void setup() {
  // put your setup code here, to run once:
  myStepper.setSpeed(60);
}

void loop() {
  // put your main code here, to run repeatedly:
  myStepper.step(200);
  delay(1000);
  myStepper.step(-200);
  delay(1000);
}