#include <Stepper.h>
const int stepsPerRevolution = 200; 
Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11);
int degree=90;
void setup() {
 myStepper.setSpeed(60);
 Serial.begin(9600);
 delay(2000);
 Serial.println("Start");
}
void loop() {
  Serial.println("clockwise");
  myStepper.step(stepsPerRevolution*90/360);
  delay(500);
  myStepper.step(stepsPerRevolution*3/4);
  delay(2000);
  Serial.println("counterclockwise");
  myStepper.step(-stepsPerRevolution*90/360);
  delay(500);
  myStepper.step(-stepsPerRevolution*3/4);
  delay(2000);
}