#include <OneWire.h>
#include <DallasTemperature.h>

#define ONE_WIRE_BUS 2

OneWire oneWire(ONE_WIRE_BUS);

DallasTemperature sensors(&oneWire);
const int buzzerPin = 9;  
const int ledPin = 8;      

const float temperatureThreshold = 50.0;

void setup(void) {
  Serial.begin(9600);
  
  sensors.begin();
  
  pinMode(buzzerPin, OUTPUT);
  pinMode(ledPin, OUTPUT);
  
  digitalWrite(buzzerPin, LOW);
  digitalWrite(ledPin, LOW);
}

void loop(void) {
  sensors.requestTemperatures();
  
  float temperature = sensors.getTempCByIndex(0);

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");
  
  if (temperature >= temperatureThreshold) {
    digitalWrite(buzzerPin, HIGH);
    digitalWrite(ledPin, HIGH);
    Serial.println("Fire Detected! Alarm ON!");
  } else {
    digitalWrite(buzzerPin, LOW);
    digitalWrite(ledPin, LOW);
    Serial.println("No Fire Detected.");
  }
  
  delay(1000);
}