#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal_I2C.h>

// Pin konfigurasi
const int ONE_WIRE_BUS = 6;    // Pin DS18B20
const int LEDGREEN = 8;        // LED Hijau
const int LEDBLUE = 4;       // LED Kuning
const int LEDRED   = 12;       // LED Merah

// Setup sensor DS18B20
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

// Setup LCD I2C (alamat bisa 0x27 atau 0x3F tergantung modul)
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  pinMode(LEDGREEN, OUTPUT);
  pinMode(LEDBLUE, OUTPUT);
  pinMode(LEDRED, OUTPUT);
  
  Serial.begin(115200);
  sensors.begin();   // Inisialisasi DS18B20
  lcd.init();
  lcd.backlight();
}

void loop() {
  sensors.requestTemperatures();              // Ambil data suhu
  float suhuC = sensors.getTempCByIndex(0);   // Suhu dalam Celcius
  float suhuF = sensors.toFahrenheit(suhuC);  // Konversi ke Fahrenheit

  // Debug serial monitor
  Serial.print("Suhu: ");
  Serial.print(suhuC, 1);
  Serial.print(" °C / ");
  Serial.print(suhuF, 1);
  Serial.println(" °F");

  // Tampilkan ke LCD
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Suhu Temp : ");
  lcd.print(suhuC, 1);
  lcd.print((char)223);
  lcd.print("Temp");

  lcd.setCursor(0, 1);
  lcd.print("Suhu Fahrn : ");
  lcd.print(suhuF, 1);
  lcd.print((char)223);
  lcd.print("Fahrn");

 // Kontrol LED
if (suhuC < 25.0) {              // Dingin
  digitalWrite(LEDBLUE, HIGH);
  digitalWrite(LEDGREEN, LOW);
  digitalWrite(LEDRED, LOW);
} 
else if (suhuC >= 25.0 && suhuC <= 35.0) { // Normal
  digitalWrite(LEDBLUE, LOW);
  digitalWrite(LEDGREEN, HIGH);
  digitalWrite(LEDRED, LOW);
} 
else { // Panas (suhu > 35 °C)
  digitalWrite(LEDBLUE, LOW);
  digitalWrite(LEDGREEN, LOW);
  digitalWrite(LEDRED, HIGH);
}

delay(1000); // Baca setiap 1 detik
}