#include <Servo.h>

int servoPin = 3;

// Create a servo object
Servo servo1;

void setup() {
  servo1.attach(servoPin);
}

void loop() {
  // Make serov go to 0 degress
  servo1.write(0);
  delay(500);
  // Make servo go to 90 degress
  servo1.write(90);
  delay(500);
  // servo1.write(170);
  // delay(500);
}