#include <ESP32Servo.h>
Servo myServo;

void setup() {
  // Attach servo to GPIO 13
  myServo.attach(13);
  
  // Optional: Initialize serial for debugging
  Serial.begin(115200);
  Serial.println("Servo back-and-forth continuous rotation started!");
}

void loop() {
  // Clockwise for ~2 seconds (rough full rotations)
  for (int i = 0; i < 200; i++) {  // Adjust loop for time/speed
    myServo.write(0);
    delay(10);
  }
  
  // Stop briefly
  myServo.write(90);
  delay(500);
  
  // Counter-clockwise for ~2 seconds
  for (int i = 0; i < 200; i++) {
    myServo.write(180);
    delay(10);
  }
  
  // Stop
  myServo.write(90);
  delay(500);
}