#include <LiquidCrystal_I2C.h>
#include <DHT.h>
#define DHTPIN 8
#define DHTTYPE DHT22 
DHT dht (DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  Serial.begin(9600);
  Serial.println("Smart Fan");
  lcd.begin(16,2);
  dht.begin();
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
}

void loop(){
  float t = dht.readTemperature();
  float h = dht.readHumidity();
  delay(1000);

  if(t>=20,30,h>=30,20){
    digitalWrite(13, HIGH);
  }
  if(t<=19,10,h<=10){ 
    digitalWrite(13, LOW);
  }
  if(t>=31,50,h>=50,31){
    digitalWrite(12, HIGH);
  }

  //menampilkan di lcd
  lcd.setCursor(0,0);
  lcd.println("suhu =");
  lcd.print(t);
  lcd.println("c");
  lcd.setCursor(0,1);
  lcd.println("lembab =");
  lcd.print(h);
  lcd.println(" %");

  //menampilkan di serial monitor
  Serial.println("suhu = ");
  Serial.print(t);
  Serial.println(" c ");
  Serial.println("kelembaban =");
  Serial.print(h);
  Serial.println(" % ");

}