#include <DHT.h>
#include <BlynkSimpleEsp8266.h>
#include <ESP8266WiFi.h>

// Replace with your Wi-Fi credentials
char auth[] = "Your_Blynk_Auth_Token";
char ssid[] = "Your_WiFi_Name";
char pass[] = "Your_WiFi_Password";

// DHT11 Sensor Setup
#define DHTPIN D4           // DHT11 connected to pin D4
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);
  dht.begin();
}

void loop() {
  Blynk.run();

  // Read temperature and humidity
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  // Check if values are valid
  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  // Print on Serial Monitor
  Serial.print("Temperature: ");
  Serial.print(t);
  Serial.print(" °C, Humidity: ");
  Serial.print(h);
  Serial.println(" %");

  // Send data to Blynk app
  Blynk.virtualWrite(V1, t);  // V1 -> Temperature
  Blynk.virtualWrite(V2, h);  // V2 -> Humidity

  delay(2000);
}