// import library DHT
#include <DHT.h>
// mendefinisikan pin DHT
#define DHTPIN 27
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

// import library LCD I2C
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  lcd.init();
  lcd.backlight();
  Serial.begin(115200);
  dht.begin();
  pinMode(12, OUTPUT);
}

void loop() {
  // membaca nilai suhu
  float t = dht.readTemperature();
  // membaca nilai kelembaban
  float h = dht.readHumidity();
  // menampilkan nilai suhu pada lcd I2C
  lcd.setCursor(0,0);
  lcd.print("Temp : ");
  lcd.print(t);
  lcd.print((char)233);
  lcd.println("C");
  // menampilkan nilai kelmbaban pada LCD I2C
  lcd.setCursor(0,1);
  lcd.print("Humid.: ");
  lcd.print(h);
  // lcd.print((char)233);
  lcd.println("%");

  // jika suhu >= 38 celcius maka lampu akan menyala
  if (t >= 38){
    digitalWrite(12, HIGH);
  }
  else {
    digitalWrite(12, LOW);
  }

  Serial.print("\nsuhu : ");
  Serial.println(t);
  delay(1000);
  Serial.print("humid : ");
  Serial.println(h);
  delay(1000);

}