void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(4, INPUT);
  pinMode(14, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int nilai = digitalRead(4);
  if (nilai == 0){
  digitalWrite(4, LOW);
  digitalWrite(14, LOW);
  }
  else {
    digitalWrite(4, HIGH);
    digitalWrite(14, HIGH);
  }
  Serial.println(nilai);
  delay(100); // this speeds up the simulation
}