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

#define ONE_WIRE_BUS 2 // DS18B20 data pin

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

const int pirPin = 3;
const int buzzerPin = 4;
const int ledTempPin = 5;
const int ledMotionPin = 6;

const float tempThreshold = 50.0; // Celsius
const int motionThreshold = HIGH; // PIR sensor logic level for motion detection

void setup() {
  Serial.begin(9600);
  sensors.begin();
  
  pinMode(pirPin, INPUT);
  pinMode(buzzerPin, OUTPUT);
  pinMode(ledTempPin, OUTPUT);
  pinMode(ledMotionPin, OUTPUT);
}

void loop() {
  sensors.requestTemperatures();
  float temperature = sensors.getTempCByIndex(0);
  int motionDetected = digitalRead(pirPin);
  
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" C");
  
  Serial.print("Motion Detected: ");
  Serial.println(motionDetected);
  
  if (temperature > tempThreshold) {
    digitalWrite(ledTempPin, HIGH);
    tone(buzzerPin, 1000); // 1kHz tone
  } else {
    digitalWrite(ledTempPin, LOW);
    noTone(buzzerPin);
  }
  
  if (motionDetected == motionThreshold) {
    digitalWrite(ledMotionPin, HIGH);
    tone(buzzerPin, 2000); // 2kHz tone for motion detection
  } else {
    digitalWrite(ledMotionPin, LOW);
  }
  
  delay(1000);
}