#include "ESP32Servo.h"

#define servo_pin 21


// Create a Servo object
Servo topLid;
void setup() {
  // put your setup code here, to run once:
  
  topLid.attach(servo_pin);

}

void loop() {
  // put your main code here, to run repeatedly:
  while(1){
    topLid.write(0);
    delay(1000);
    topLid.write(90);
    delay(1000);
    topLid.write(0);
    delay(1000);   
  }
}