#include "DHT.h"

#define DHTPIN 2 // definisikan pin yang digunakan utk sensor DHT22

// Tentukan jenis DHT yang digunakan (pilih salah satu)
// Saat ini yang dipilih adalah DHT22
#define DHTTYPE DHT22 // DHT 22 

DHT dht(DHTPIN, DHTTYPE);

#define RELAY_ON 0
#define RELAY_OFF 1
#define RELAY_1  8   // pin yang digunakan yaitu pin 8

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

#define suhuon 11
#define suhuoff 12

void setup() {
  Serial.begin(9600); 
  Serial.println("DHT22 test!");
  dht.begin();
  
 // Set pin as output.
  pinMode(RELAY_1, OUTPUT);
  pinMode(suhuon, OUTPUT);
  pinMode(suhuoff, OUTPUT);
   
 // Initialize relay one as off so that on reset it would be off by default
  digitalWrite(RELAY_1, RELAY_OFF);
  digitalWrite(suhuon, LOW);
  digitalWrite(suhuoff, LOW);

  lcd.begin(16, 2);
  lcd.setCursor(0,0);
  lcd.print("KELOMPOK");
  lcd.backlight();
  lcd.setCursor(0,1);
  lcd.print("Rustu,Mujahid");
  lcd.backlight();
  delay(5000);
  lcd.clear();
  
  lcd.setCursor(0,0);
  lcd.print("Taufik,Arif,");
  lcd.backlight();
  lcd.setCursor(0,1);
  lcd.print("Munaz");
  lcd.backlight();
  delay(5000);
  lcd.clear();
}

void loop() {
  // Baca humidity dan temperature
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  bool relay1Status = false;
  bool relay2Status = false;

  if (t < 37.50) { // ON
    digitalWrite(RELAY_1, RELAY_ON);
    digitalWrite(suhuon, HIGH);
    digitalWrite(suhuoff, LOW);
    relay1Status = true;
  } else if (t > 37.55) { // OFF
    digitalWrite(RELAY_1, RELAY_OFF);
    digitalWrite(suhuoff, HIGH); 
    digitalWrite(suhuon, LOW);
    relay1Status = false;
  }

  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.print(" %t");
  
  Serial.print("Temperature: "); 
  Serial.print(t);
  Serial.println(" *C");

  lcd.setCursor(0,0);
  lcd.print("HEATER: ");
  lcd.backlight();
  lcd.print(relay1Status ? "ON " : "OFF");

  lcd.setCursor(0,1);
  lcd.print("SUHU  : "); 
  lcd.print(t);
  lcd.print(" C      ");

}