#include <Servo.h>

Servo myServo;  // Create servo object

void setup() {
  myServo.attach(9);  // Connect servo to PWM pin 9
}

void loop() {
  // Move to 0°, 90°, and 180° with 1-second delays
  myServo.write(0);
  delay(1000);

  myServo.write(90);
  delay(1000);

  myServo.write(180);
  delay(1000);

  // Sweep from 0° to 180°
  for (int angle = 0; angle <= 180; angle++) {
    myServo.write(angle);
    delay(10);  // Smooth motion
  }

  // Sweep back from 180° to 0°
  for (int angle = 180; angle >= 0; angle--) {
    myServo.write(angle);
    delay(10);
  }
}