/*
PROGRAM PENGATURAN SUHU PENYIMPANAN
BUAH TOMAT BERBASIS IoT
*/

#include <DHT.h>;
#define DHTPIN 7     // what pin we're connected to
#define DHTTYPE DHT22   // DHT 22  (AM2302)
DHT dht(DHTPIN, DHTTYPE);

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd (0x27, 20, 4);

int hum;
float temp;

int heater = 9;
int AC = 8;
int buzzer = 3;

void setup() {
  dht.begin();
  lcd.init();
  lcd.backlight();
  pinMode (heater, OUTPUT);
  pinMode (AC, OUTPUT);
  pinMode (buzzer, OUTPUT);
  lcd.setCursor (0, 0);
  lcd.println("PENYIMPANAN TOMAT");
}

void loop() {
  lcd.setCursor (7, 1);
  lcd.print ("         "); 
  lcd.setCursor (12, 2);
  lcd.print ("        "); 
    hum = dht.readHumidity();
    temp= dht.readTemperature();
    lcd.setCursor (0, 1);
    lcd.print ("SUHU : "+String(temp)+" Djt");
    lcd.setCursor (0, 2);
    lcd.print ("KELEMBABAN : "+String(hum)+" %");

    if (temp < 10){
      digitalWrite (heater, HIGH);
      digitalWrite (AC, LOW);
      lcd.setCursor (0, 3);
      lcd.print ("AC OFF, HEAT ON    ");
      tone(buzzer, 120);
      delay (1000);
    }
    if (temp > 10 && temp < 15){
       digitalWrite (heater, LOW);
      digitalWrite (AC, LOW);
      lcd.setCursor (0, 3);
      lcd.print ("SUHU RUANG NORMAL  ");
      noTone(buzzer);
      delay (1000);
    }

    if (temp > 15){
      digitalWrite (heater, LOW);
      digitalWrite (AC, HIGH);
      lcd.setCursor (0, 3);
      lcd.print ("AC ON, HEAT OFF    ");
      tone(buzzer, 120);
      delay (1000);
    }
}