int pingas = 8;
int pinbuz = 9;


int ciumGas;


void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
Serial.print("sensor gas menyala");
}

void loop() {
  // put your main code here, to run repeatedly:
ciumGas = digitalWrite(pingas);

if (ciumGas) {
		Serial.println("  aman ");
    delay(100);
    noTone(pinbuz);  
	} else {
		Serial.println("  bahaya ");
    tone(pinbuz, 582);
    delay(500);
	}
	
	delay(2000);
}