#include <Stepper.h>
const int stepsPerRevolution = 200;
Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11);

void setup() {
   myStepper.setSpeed(60);
   Serial.begin(9600);
}

void loop() {
   Serial.println("clockwise");
   myStepper.step(400);
   delay(500);
   Serial.println("counterclockwise");
   myStepper.step(-400);
   delay(500);
}