#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>

// LCD Display
LiquidCrystal_I2C lcd(0x27, 16, 2);

// DHT22 Sensor
#define DHTPIN 4
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  // Initialize LCD Display
  lcd.begin(16, 2);
  lcd.setBacklight(LOW); // Turn off backlight initially
  lcd.print("Temperature:");
  
  // Initialize DHT22 Sensor
  dht.begin();
  
  // Setup Serial Communication
  Serial.begin(9600);
}

void loop() {
  // Read temperature and humidity from the sensor
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // Print temperature and humidity to LCD display
  lcd.setBacklight(HIGH); // Turn on backlight
  lcd.setCursor(0, 1);
  lcd.print("Temp: ");
  lcd.print(temperature);
  lcd.print("C  Humidity: ");
  lcd.print(humidity);
  lcd.print("%");

  // Print temperature and humidity to Serial Monitor
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print("C  Humidity: ");
  Serial.print(humidity);
  Serial.println("%");

  delay(2000); // Delay for stability
  lcd.clear(); // Clear the LCD display for the next iteration
  lcd.setBacklight(LOW); // Turn off backlight
}