// Include the Servo library
#include <Servo.h>

// Define the pin for the servo motor
int servoPin = 9;

// Create a Servo object
Servo myservo;

void setup() {
  // Attach the servo motor to its respective pin
  myservo.attach(servoPin);
}

void loop() {
  // Move the servo motor to the initial position
  myservo.write(90);
  delay(1000);

  // Move the servo motor to the opposite position
  myservo.write(0);
  delay(1000);
}