#include <Stepper.h>

const int stepsPerRevolution = 200; 

Stepper myStepper(stepsPerRevolution, 8, 9, 10, 11);

void setup() {
  myStepper.setSpeed(30);
  Serial.begin(9600);
}

void loop() {
  Serial.println("Ke Kanan 90");
  myStepper.step(stepsPerRevolution / 4 );
  delay(2000);

  Serial.println("Ke Kanan 90");
  myStepper.step(stepsPerRevolution / 4 );
  delay(2000);

  Serial.println("Ke kiri 180");
  myStepper.step(-stepsPerRevolution / 2);
  delay(2000);

   Serial.println("Ke kiri 180");
  myStepper.step(-stepsPerRevolution / 2);
  delay(2000);

 
}