#include <ESP32Servo.h>

Servo myServo;
int pos = 0;

const byte servoPin = 15;
const byte potPin = 27;

void setup() {
  Serial.begin(115200);
  myServo.attach(servoPin);
  myServo.write(0);
  delay(1000);
}

void loop() {
  delay(10);
  int val = analogRead(potPin);
  pos = map(val, 0, 4095, 0, 180);
  myServo.write(pos);
}