//sketch.ino
#include <Servo.h>

Servo myservo;  // Create a servo object to control a servo motor

void setup() {
  Serial.begin(9600);
  myservo.attach(9);  // Attach the servo to pin 9
}

void loop() {
  Serial.println("90");
  myservo.write(90);  // Set the servo to 90 degrees
  delay(1000);
  Serial.println("0");        // Wait for 1 second
  myservo.write(0);   // Set the servo to 0 degrees
  delay(1000);        // Wait for 1 second
}