#include <ESP32Servo.h>

Servo myservo;
int pos = 0;    
int servoPin = 33; // PWM 2,4,12-19,21-23,25-27,32-33 

void setup() {
	ESP32PWM::allocateTimer(0);
	ESP32PWM::allocateTimer(1);
	ESP32PWM::allocateTimer(2);
	ESP32PWM::allocateTimer(3);
	myservo.setPeriodHertz(50);    
	myservo.attach(servoPin, 500, 2400);

}

void loop() {

	for (pos = 0; pos <= 180; pos += 1) { 
		myservo.write(pos);    
		delay(15);             
	}
	for (pos = 180; pos >= 0; pos -= 1) { 
		myservo.write(pos);    
		delay(15);             
	}
}