#include <DHT.h>
#include <LiquidCrystal_I2C.h>  // Library to Run I2C LCD LiquidCrystal I2C Library by Frank de Barbander 1.1.2

// We are using I2C 16x2 alphanumeric LCD with HD44780 controller
LiquidCrystal_I2C lcd(0x27, 16, 2);  // Format -> (Address,Columns,Rows )

#define DHTPIN 2       // Define the digital pin where the DHT sensor is connected
#define DHTTYPE DHT22  // DHT11 or DHT22, change this according to your sensor type

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  dht.begin();  // Initialize the DHT sensor
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  // write column, row 
  lcd.setCursor(0, 0);
  // Print a message to the LCD.
  lcd.print("Temp. = ");
  // write column, row 
  lcd.setCursor(0, 1);
  lcd.print("Humid.= ");
}

void loop() {
  // Read temperature and humidity from the DHT sensor
  // In the parameter pass true if temperature is required in fahrenheit, pass false if tempearture is required in celcius
  float temperature = dht.readTemperature(false);
  float humidity = dht.readHumidity();

  // Check if the sensor reading is valid (non-NaN)
  if (!isnan(temperature) && !isnan(humidity)) {
    // write column, row 
  lcd.setCursor(8, 0);
  // Print a Tempearture to the LCD.
  lcd.print(temperature);
  lcd.print(" C ");
  // write column, row 
  lcd.setCursor(8, 1);
  // Print a Humidity to the LCD.
  lcd.print(humidity);
  lcd.print(" % ");
  }
  delay(2000);  // Delay for 2 seconds before the next reading
}