void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(2, INPUT);
  pinMode(23, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int nilai = digitalRead(2);
  Serial.println(nilai);
  if(nilai == 1){
    digitalWrite(23, HIGH);
  }
  else{
    digitalWrite(23, LOW);
  }
  
}