#define MQ2pin 8
#define buzzerPin 2

int sensorValue; 

void setup() {
	Serial.begin(9600);
	pinMode(buzzerPin, OUTPUT);
	delay(200); 
}

void loop() {
	sensorValue = digitalRead(MQ2pin);
	
	if (sensorValue) {
		Serial.println("tidak terdeteksi");
		noTone(buzzerPin);
	} else {
		Serial.println("terdeteksi kebakaran");
		tone(buzzerPin, 1);
	}
	
	delay(2000); 
}