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

#define DHTPIN 15        // Pin connected to the DHT sensor
#define DHTTYPE DHT22    // DHT 22 (AM2302)

// Initialize the LCD with the I2C address 0x27 and 16x2 size
LiquidCrystal_I2C lcd(0x27, 16, 2);
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  // Initialize the LCD and the DHT sensor
  lcd.init();
  lcd.backlight();
  
  dht.begin();

  // Display welcome message
  lcd.setCursor(0, 0);
  lcd.print("Temp & Humidity");
}

void loop() {
  // Reading temperature or humidity takes about 250 milliseconds!
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  // Check if any reads failed
  if (isnan(h) || isnan(t)) {
    lcd.setCursor(0, 1);
    lcd.print("Error reading!");
    return;
  }

  // Print temperature and humidity on the LCD
  lcd.setCursor(0, 1);
  lcd.print("T:");
  lcd.print(t);
  lcd.print("C H:");
  lcd.print(h);
  lcd.print("%");

  // Update readings every 2 seconds
  delay(2000);
}