#include <ESP32Servo.h>
int pos = 0;
Servo servo;
void setup()
{ 
  servo.attach(23, 500, 2500); 
}
void loop()

{
  for (pos = 0; pos <= 90; pos += 1) {
  servo.write(pos);
delay(10);
  }

for (pos = 90; pos >= 0; pos -= 1) {
servo.write(pos);
delay(15);
}
}