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

// Pin where the DS18B20 sensor is connected
const int oneWireBus = A0;

OneWire oneWire(oneWireBus);
DallasTemperature sensors(&oneWire);

LiquidCrystal_I2C lcd(0x27, 16, 2); // 0x27 is the I2C address, adjust as needed

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.clear();

  sensors.begin();
}

void loop() {
  sensors.requestTemperatures();
  float temperatureC = sensors.getTempCByIndex(0);
  if (temperatureC == DEVICE_DISCONNECTED_C) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Error: Sensor");
    lcd.setCursor(0, 1);
    lcd.print("Disconnected");
  } else {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Temp: ");
    lcd.print(temperatureC, 2); // Display temperature with 2 decimal places
    lcd.print("C");

    // If you want to display Fahrenheit, uncomment the following lines:
    // float temperatureF = sensors.toFahrenheit(temperatureC);
    // lcd.setCursor(0, 1);
    // lcd.print("Temp: ");
    // lcd.print(temperatureF, 2); // Display temperature with 2 decimal places
    // lcd.print("F");
  }

  delay(1000); // Update the display every 1 second
}