#include <DHT.h>

#include <LiquidCrystal.h>

// Define the type of DHT sensor you're using

#define DHTTYPE DHT11 // Change to DHT22 if using a DHT22 sensor

// Define the pin where the data pin of the DHT sensor is connected

#define DHTPIN 2

// Initialize the DHT sensor

DHT dht(DHTPIN, DHTTYPE);

// Initialize the LCD (RS, E, D4, D5, D6, D7)

LiquidCrystal lcd(7, 8, 9, 10, 11, 12);

void setup() {

  Serial.begin(9600); // Start Serial communication

  pinMode(3, OUTPUT);

  digitalWrite(3, HIGH);

  pinMode(2, OUTPUT); // Set Pin 3 as output for PWM

  analogWrite(2, 100); // Set contrast (value between 0 to 255)

  pinMode(3, OUTPUT); // Set Pin 3 as output for PWM

  analogWrite(3, 100); // Set contrast (value between 0 to 255)

  Serial.println("DHT Sensor with LCD Initialized");

  dht.begin(); // Start the DHT sensor

   lcd.begin(16, 2); // Set up the LCD's columns and rows

  lcd.print("Welcome. 27LINKS");

  delay(2000);

  lcd.clear(); // Clear the screen

}

void loop() {

  delay(1000); // Wait 2 seconds between measurements

  // Read humidity

  float humidity = dht.readHumidity();

  // Read temperature in Celsius

  float temperature = dht.readTemperature();

  // Check if any readings failed

  if (isnan(humidity) || isnan(temperature)) {

    lcd.clear();

    lcd.print("Sensor Error!");

    Serial.println("Failed to read from DHT sensor!");

    return;

  }

  // Display readings on the LCD

  lcd.setCursor(0, 0); // Set cursor to first row, first column

  lcd.print("Temp.: ");

  lcd.print(temperature);

  lcd.print(" C");

  lcd.setCursor(0, 1); // Set cursor to second row, first column

  lcd.print("Humidity: ");

  lcd.print(humidity);

  lcd.print("%");

  // Print readings to Serial Monitor as well

  Serial.print("Temperature: ");

  Serial.print(temperature);

  Serial.print(" *C, Humidity: ");

  Serial.print(humidity);

  Serial.println(" %");

}

//This code is in Public Domain. Any one can use this code.