#include <ESP32Servo.h>

Servo myservo;
int servoPin = 2;
int potPin = 4;
int ADC_Max = 4096;
int val;

void setup() {
 Serial.begin(9600);
 myservo.setPeriodHertz(50);
 myservo.attach(servoPin, 500, 2400);
}

void loop() {
 val = analogRead(potPin);
 val = map(val, 0, ADC_Max, 0, 180);
 Serial.println(val);
 myservo.write(val);
 delay(200);
}