#include <Wire.h>
#include <DHT.h>
#define DHTPIN 4
#define LED 2 
#define DHTTYPE DHT22
DHT dht (DHTPIN, DHTTYPE);


#include <LiquidCrystal_I2C.h>
#define I2C_ADDR 0x27
#define LCD_COLUMNS 16
#define LCD_LINES 2

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

void setup()
{
pinMode(LED, OUTPUT);
digitalWrite(LED, LOW);
Serial.begin(115200);
Serial.println("Hello, ESP32!");
dht.begin();
lcd.init();
lcd.backlight();
lcd. clear();
}
void loop()
{
   delay(500);

  float h = dht.readHumidity();
  float t = dht.readTemperature();
  float f = dht.readTemperature(true);

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

  float hif = dht.computeHeatIndex(f, h);
  float hic = dht.computeHeatIndex(t, h, false);

  Serial.print(F("Humidity: "));
  Serial.print(h);
  Serial.print(F("% Temperature: "));
  Serial.print(t);
  Serial.print(F("°C "));
  Serial.print(f);
  Serial.print(F("°F Heat index: "));
  Serial.print(hic);
  Serial.print(F("°C "));
  Serial.print(hif);
  Serial.println(F("°F"));

  if (t > 50)
  {
    digitalWrite(LED, HIGH);
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Temperature:OVER");
  }
  else
  {
    digitalWrite(LED, LOW);
    lcd.setCursor(0, 0);
    lcd.print("Humidity: ");
    lcd.print(h);
    lcd.print(" %  ");

    lcd.setCursor(0, 1);
    lcd.print("Temperature:");
    lcd.print(t);
    lcd.print(" C  ");
  }

}