#include <LiquidCrystal_I2C.h>
#include <DHT.h>
#define DHTPIN 10
#define DHTTYPE DHT22
#define LEDMerah 8
#define LEDBiru 9
DHT dht (DHTPIN, DHT22);

LiquidCrystal_I2C lcd(0x27,20,4);
int chk;
float hum;
float temp;

void setup() {
    Serial.begin(9600);
    dht.begin();
    lcd.init ();              
  lcd.setBacklight(HIGH);   
  pinMode(LEDMerah,OUTPUT);
  pinMode(LEDBiru,OUTPUT);
  }
void loop() {
if (temp<18){
  digitalWrite(LEDBiru, HIGH);
  digitalWrite(LEDMerah, LOW);
if (hum<50)
  digitalWrite(LEDBiru, HIGH);
  digitalWrite(LEDMerah, LOW);
  
}
if (temp>25){
  digitalWrite(LEDBiru, LOW);
  digitalWrite(LEDMerah, HIGH);
if (hum>80)
  digitalWrite(LEDBiru, LOW);
  digitalWrite(LEDMerah, HIGH);
}
  hum = dht.readHumidity();
  temp = dht.readTemperature();
    lcd.init();
    lcd.backlight();
    lcd.setCursor(3, 0);
    lcd.print("Papan Informasi");
    // suhu 
    lcd.setCursor(0, 2);
    lcd.print("Suhu   :");
    lcd.setCursor(13, 2);
    lcd.print(temp);
    lcd.setCursor(19, 2);
    lcd.print("C");
    // kelembaban
    lcd.setCursor(0, 3);
    lcd.print("Kelembaban :");
    lcd.setCursor(13, 3);
    lcd.print(hum);
    lcd.setCursor(19, 3);
    lcd.print("%");
    //delay(500);
    //lcd.clear();
}