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

byte val, time = 0;
float t, h;
float t_past = 0, h_past = 0;

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

void setup() {
  Serial.begin(9600);
  dht.begin();
  lcd.init();
  lcd.backlight();
  myservo.attach(11);
}

void loop() {
  t = dht.readTemperature();
  h = dht.readHumidity();
  if (((t != t_past) || (h != h_past)) && (time == 0)) {
    time++;
    if ((t > 10) && (h > 50)) {
      val = map(h, 50, 100, 0, 180);
      myservo.write(val);
    } else {
      val = 0;
      myservo.write(val);
    }
  }

  lcd.setCursor(0, 0); lcd.print("T:"); lcd.print(t); lcd.print("  ");
  lcd.setCursor(0, 1); lcd.print("H:"); lcd.print(h); lcd.print("  ");
  lcd.setCursor(10, 0); lcd.print("<="); lcd.print(val); lcd.print("  ");
  if (time > 0) {
    lcd.setCursor(10, 1); lcd.print("time "); lcd.print(2 - time); lcd.print("s  ");
  } else {
    lcd.setCursor(10, 1); lcd.print("time "); lcd.print(0); lcd.print("s  ");
  }

  Serial.print("Humidity: ");
  Serial.print(h, 1);
  Serial.print("%  Temperature: ");
  Serial.print(t, 1);
  Serial.print("C & ");
  Serial.print(time);
  Serial.println("s");

  delay(500);

  if ((time >= 1) && (time < 2)) {
    time++;
  } else {
    time = 0;
    t_past = t;
    h_past = h;
  }
}