#include <Servo.h>

Servo myServo;

void setup() {
  myServo.attach(9);  // Attach the servo to pin 9
}

void loop() {
  // Turn left
  myServo.write(0);  // 0 = full speed counterclockwise
  delay(3000);       // Rotate for 3 seconds

  // Stop
  myServo.write(90); // 90 = stop
  delay(1000);       // Wait for 1 second

  // Turn right
  myServo.write(180); // 180 = full speed clockwise
  delay(3000);        // Rotate for 3 seconds

  // Stop
  myServo.write(90);  // Stop again
  delay(1000);        // Wait for 1 second
}