unsigned long last_time = 0;
int count =0;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(2, OUTPUT);
  pinMode(25, OUTPUT);
}

void loop() {
  if(millis() - last_time > 500){
    digitalWrite(2, !digitalRead(2));
    last_time = millis();
    if ((count == 1) || (count == 2) || (count == 5) || (count == 6) || (count == 9) || (count == 10)|| (count == 15) || (count == 17)|| (count == 19) || (count == 21)|| (count == 23) || (count == 25)){
      digitalWrite(25, HIGH);
    }
    else if((count ==3)||(count==4)|| (count == 7) || (count == 8)|| (count == 11) || (count == 12)|| (count == 13) || (count == 14)|| (count == 16) || (count == 18)|| (count == 20) || (count == 22)|| (count == 24) || (count == 26)|| (count == 27)|| (count == 28)|| (count == 29)){
        digitalWrite(25, LOW);
    }
    count++;
    if(count>29){
      count=0;
    }
  }


}