#define BLYNK_TEMPLATE_ID "TMPL6hNmpcu6z"
#define BLYNK_TEMPLATE_NAME "Smart Home"
#define BLYNK_PRINT Serial
#define BLYNK_AUTH_TOKEN "WnBwXYS1F1eTrfk_qzLX1bF3SSeJT6nY"
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include "DHT.h" // Include DHT sensor library
#include <ESP32Servo.h>
const char ssid[] = "Wokwi-GUEST";
const char pass[] = "";

#define RELAY_PIN 5
#define DHTPIN 4     // Digital pin connected to the DHT sensor
#define DHTTYPE DHT22   // DHT22

DHT dht(DHTPIN, DHTTYPE);
Servo myServo;

BLYNK_WRITE(V0) {
  digitalWrite(RELAY_PIN, param.asInt());
}

void setup() {
  Serial.begin(115200);
  myServo.attach(18);
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  dht.begin(); // Initialize DHT sensor
}

void loop() {
  Blynk.run();
  static unsigned long lastMillis = 0;
  unsigned long currentMillis = millis();

  if (currentMillis - lastMillis >= 2000) { // Read sensor every 2 seconds.
    lastMillis = currentMillis;

    float h = dht.readHumidity();
    float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit

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

    Blynk.virtualWrite(V1, t); // Send temperature to virtual pin V1
    Blynk.virtualWrite(V2, h); // Send humidity to virtual pin V2

    Serial.print("Humidity: ");
    Serial.print(h);
    Serial.print(" %\t");
    Serial.print("Temperature: ");
    Serial.print(t);
    Serial.println(" *C");
    // Control servo based on temperature and humidity
    if ((h < 35) && (t > 40)) { 
      myServo.write(90);   // Move to 90 degrees
      Serial.println("Servo moved to 90 degrees");
    } else {
      myServo.write(180);  // Move to 180 degrees
      Serial.println("Servo moved to 180 degrees");
    }
  }
}