#include <ESP32Servo.h>
 
Servo myservo;  // create servo object to control a servo
// 16 servo objects can be created on the ESP32
 
int pos = 0;    // variable to store the servo position
// Recommended PWM GPIO pins on the ESP32 include 2,4,12-19,21-23,25-27,32-33 
int servoPin = 13;
 
void setup() {
  // Allow allocation of all timers
  ESP32PWM::allocateTimer(0);
  ESP32PWM::allocateTimer(1);
  ESP32PWM::allocateTimer(2);
  ESP32PWM::allocateTimer(3);
  myservo.setPeriodHertz(50);    // standard 50 hz servo
  myservo.attach(servoPin, 500, 2400); // attaches the servo on pin 18 to the servo object
  // using default min/max of 1000us and 2000us
  // different servos may require different min/max settings
  // for an accurate 0 to 180 sweep
  Serial.begin(115200);
}
 
void loop() {
 
  for (pos = 0; pos <= 180; pos += 1) { // goes from 0 degrees to 180 degrees
    // in steps of 1 degree
    myservo.write(pos);    // tell servo to go to position in variable 'pos'
    Serial.println(pos);
    delay(15);             // waits 15ms for the servo to reach the position
  }
  for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees
    myservo.write(pos);    // tell servo to go to position in variable 'pos'
    Serial.println(pos);
    delay(15);             // waits 15ms for the servo to reach the position
  }
}