#define DO_PIN 14
#define LED_PIN 5  

void setup() {
  Serial.begin(9600);
  pinMode(DO_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);

  Serial.println("Menyiapkan Sensor MQ2");
  delay(20); 
}

void loop() {
  int gasState = digitalRead(DO_PIN);

  if (gasState == HIGH){
    Serial.println("Gas Terdeteksi");
    digitalWrite(LED_PIN, HIGH);
  }
  else{
    Serial.println("Tidak Terdeteksi Gas");
    digitalWrite(LED_PIN, LOW);
  }
}