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

#define DHTPIN 2
#define DHTTYPE DHT22

LiquidCrystal_I2C lcd(0x27, 16, 2);
DHT dht(DHTPIN, DHTTYPE);

const float HUMIDITY_HIGH = 70.0;
const float HUMIDITY_LOW = 30.0;


void setup() {
  lcd.init();
  lcd.backlight();
  dht.begin();
}

void loop() {
  delay(2000);

  float humidity = dht.readHumidity();

  if (isnan(humidity)){
    lcd.clear();
    lcd.print("Sensor Error!");
    return ;
  }

  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Humidity: ");
  lcd.print(humidity);
  lcd.print("%");

  lcd.setCursor(0,1);
  if (humidity > HUMIDITY_HIGH) {
    lcd.print("Status: HIGH");
  }
  else if (humidity < HUMIDITY_LOW) {
    lcd.print("Status: LOW");
  }

  else {
    lcd.print("Status: Normal");
  }

}