#include "DHTesp.h"

// Pin configuration
#define DHTPIN 12       // Pin for DHT sensor
#define pinRelay 15     // Pin for relay

// Declare DHT sensor object
DHTesp dht;

void setup() {
  // Initialize relay pin as output
  pinMode(pinRelay, OUTPUT);

  // Initialize serial interface
  Serial.begin(115200);
  
  // Initialize DHT sensor
  dht.setup(DHTPIN, DHTesp::DHT22);
}

void loop() {
  // Read temperature and humidity data from DHT22
  TempAndHumidity data = dht.getTempAndHumidity();

  // Extract temperature data
  float temp = data.temperature;

  // Control relay based on temperature
  if(temp >= 30){
    digitalWrite(pinRelay, HIGH);
    Serial.println("Temp: " + String(temp, 2) + "°C , Fan ON");
  } else {
    digitalWrite(pinRelay, LOW);
    Serial.println("Temp: " + String(temp, 2) + "°C , Fan OFF");
  }

  // Delay before next loop iteration
  delay(500);
}