// Stepper m

#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("ตามเข็ม");
  myStepper.step(stepsPerRevolution);
  delay(500);
  Serial.println("ทวนเข็ม");
  myStepper.step(-stepsPerRevolution);
  delay(500);
}