#include <ESP32Servo.h>
Servo myservo;                                           // create servo object to control a servo
int angle = 0;                                               // variable to store the servo position
void setup()
{
myservo.attach(18,544,2400);                                         // attaches the servo on pin 9 to the servo 
}
void loop()
{
for(angle = 0; angle < 180; angle += 1)                      // goes from 0 degrees to 180 degrees
{                                                                                       // in steps of 1 degree
myservo.write(angle);                                            // tell servo to go to position in variable 'angle'
delay(20);                                                                 // waits 20ms between servo commands
}
for(angle = 180; angle >= 1; angle -= 1)                              // goes from 180 degrees to 0 degrees
{
myservo.write(angle);                                                     // tell servo to go to position in variable 
delay(20);                                                                              // waits 20ms between servo commands
}
}