#include <DHTesp.h>
#include <LiquidCrystal_I2C.h>

const int DHT_PIN = 15;
const int fan = 2;
const int heater = 4;

DHTesp dhtSensor;
LiquidCrystal_I2C lcd(0x27, 16, 4);

void sendSensor()
{
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  float temperature = data.temperature;
  float humidity = data.humidity;

  lcd.setCursor(13, 2);
  lcd.print(temperature);
  lcd.setCursor(13, 3);
  lcd.print(humidity);

  
  if (temperature > 30 && humidity < 40)
  {
    
    digitalWrite(fan, HIGH);
    digitalWrite(heater, LOW);
    lcd.setCursor(0, 0);
    lcd.print("Fan    : ON");
    lcd.setCursor(0, 1);
    lcd.print("Heater : OFF");
  }
  else if (temperature >= 21 && temperature <= 30 && humidity >= 40 && humidity <=69)
  {
    
    digitalWrite(fan, LOW);
    digitalWrite(heater, LOW);
    lcd.setCursor(0, 0);
    lcd.print("Fan    : OFF");
    lcd.setCursor(0, 1);
    lcd.print("Heater : OFF");
  }
  else if (temperature < 21 && humidity > 69) 
  {
    digitalWrite(fan, LOW);
    digitalWrite(heater, HIGH);
    lcd.setCursor(0, 0);
    lcd.print("Fan    : OFF");
    lcd.setCursor(0, 1);
    lcd.print("Heater : ON");
  }
  else
  {
    digitalWrite(fan, LOW);
    digitalWrite(heater, LOW);
    lcd.setCursor(0, 0);
    lcd.print("Fan    : OFF");
    lcd.setCursor(0, 1);
    lcd.print("Heater : OFF");
  }
}

void setup()
{
  pinMode(fan, OUTPUT);
  pinMode(heater, OUTPUT);

  lcd.init();
  lcd.backlight();

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  Serial.begin(115200);
  delay(1000);
}

void loop()
{
  sendSensor();
  delay(1000); 
  
TempAndHumidity data = dhtSensor.getTempAndHumidity();
  float temperature = data.temperature;
  float humidity = data.humidity;

  lcd.setCursor(0, 2);
  lcd.print("Suhu       = "); lcd.print(temperature); lcd.print(" C");
  lcd.setCursor(0, 3);
  lcd.print("Kelembaban = "); lcd.print(humidity); lcd.print(" %");

  Serial.print("Suhu: ");
  Serial.print(temperature,1);
  Serial.print(" C  Kelembaban: ");
  Serial.print(humidity,1);
  Serial.println(" % ");
}