#include <LiquidCrystal_I2C.h>
#include "DHT.h"
//port 13
#define DHTPIN 13     
#define DHTTYPE DHT22   
DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);

int led = 2;

void setup() {
  //show output
  Serial.begin(11550);
  lcd.begin(16, 2);
  Serial.println("System Monitoring Temperature and Humidity in a Room");
  dht.begin();
  
  pinMode(led, OUTPUT);


}

void loop() {
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  //kelajuan autput untuk keluar
  delay(1000);
  //baris output lcd
  lcd.setCursor(0,0);
  lcd.println("Temp:");
  lcd.print(t);
  lcd.println("'C");
  //baris outpput lcd
  lcd.setCursor(0,1);
  lcd.println("Humid:");
  lcd.print(h);
  lcd.println("%");
//output
  Serial.print("Temperature:");
  Serial.print(t);
  Serial.print("'C\t");
  Serial.print("Humidity:");
  Serial.print(h);
  Serial.println(" %");

  if ( t > 30){
    digitalWrite(led, HIGH);

  } else {
    digitalWrite(led, LOW);
   
  }
}