#include <DHT.h>
// The LED will turn on if the temperature exceeds 25°C
// Define DHT sensor type and pin
#define DHTPIN 15       
#define DHTTYPE DHT22   

// Create DHT object
DHT dht(DHTPIN, DHTTYPE);

// Define LED pin
#define LEDPIN 2       

void setup() {
  
  Serial.begin(115200);
  dht.begin();
  pinMode(LEDPIN, OUTPUT);
}

void loop() {

  delay(2000);
  
// Read temperature as Celsius
  float temperature = dht.readTemperature();
  if (isnan(temperature)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
  
// Print temperature to serial monitor
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");
  
// Check if temperature exceeds threshold
  if (temperature > 25.0) { 
    digitalWrite(LEDPIN, HIGH); 
  } else {
    digitalWrite(LEDPIN, LOW); 
  }
}