#include <ESP32Servo.h>
Servo myservo;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  myservo.attach(2);
}

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