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

#define DEBUG 1
#define DHTTYPE DHT 22
#define led 13
#define DHTPIN 2
#define servopin 10

float h;
float t;

LiquidCrystal_I2C lcd(0x27, 16, 2);
Servo servo;
DHT dht(DHTPIN, DHT22);

void setup()
{
  Serial.begin(9600);
  pinMode(led, OUTPUT);
  servo.attach(servopin);
  Serial.println("DHT22 Start!!!");
  dht.begin();
  lcd.init();
  lcd.backlight();
  servo.write(0);
}
 
void loop()
{
  lcd.clear();
  lcd.home();
  lcd.display();
 
  h = dht.readHumidity();
  t = dht.readTemperature();
 
  if (isnan(h) || isnan(t))
  {
    lcd.home();
    lcd.print("ERROR!!!");
  }
  else
  {
    lcd.home();
    lcd.print("Humidity: ");
    lcd.setCursor(0, 1);
    lcd.print("Temperature: ");
    lcd.setCursor(10, 0);
    lcd.print(h);
    lcd.setCursor(12, 1);
    lcd.print(t);
    delay(2000);
  }
  if (!isnan(h))
  {
    if (h >= 70)
    {
      servo.write(0);
    }
    else if ((h >= 35) && (h <= 69))
    {
      servo.write(30);
    }
    else if (h <= 34)
    {
      servo.write(0);
    }
  }
}