#include <DHT.h>

#define DHTPIN 2
#define DHTTYPE DHT22

#define LED_PIN 13
#define BUZZER_PIN 8

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);

  dht.begin();

  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
}

void loop() {
  float temperature = dht.readTemperature();

  // Check if the sensor reading is valid
  if (isnan(temperature)) {
    Serial.println("Failed to read temperature!");
    return;
  }

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");

  // Temperature alert
  if (temperature > 32) {
    digitalWrite(LED_PIN, HIGH);
    tone(BUZZER_PIN, 1000);

    Serial.println("⚠️ ALERT: Temperature is above 32°C!");
  } else {
    digitalWrite(LED_PIN, LOW);
    noTone(BUZZER_PIN);
  }

  delay(2000);
}