#include <OneWire.h>
#include <DallasTemperature.h>
const int thermistorPin = A0;  // Analog pin connected to the thermistor
const int resistorValue = 10000;  // Resistor value in ohms (10K ohms for a typical NTC thermistor)

// Data wire is connected to pin 2 on the Arduino
#define ONE_WIRE_BUS 2

// Create a OneWire instance to communicate with any OneWire devices
OneWire oneWire(ONE_WIRE_BUS);

// Pass the OneWire reference to DallasTemperature library
DallasTemperature sensors(&oneWire);

void setup() {
  // Start serial communication
  Serial.begin(9600);

  // Initialize the DS18B20 sensor
  sensors.begin();
}

void loop() {
  // Request temperature readings from the DS18B20 sensor
  sensors.requestTemperatures();

  // Read the temperature in Celsius
  float DStemperatureCelsius = sensors.getTempCByIndex(0);

  // Check if the temperature reading is valid
  if (DStemperatureCelsius != DEVICE_DISCONNECTED_C) {
    // Print the temperature to the Serial Monitor
    Serial.print("Temperature: ");
    Serial.print(DStemperatureCelsius);
    Serial.println(" °C");
  } else {
    Serial.println("Error reading temperature!");
  }

  // Add a delay to control the rate of temperature readings
  delay(1000);
   // Read the raw ADC value from the thermistor
  int rawValue = analogRead(thermistorPin);

  // Convert the raw ADC value to resistance using the voltage divider formula
  float resistance = (resistorValue * (1023.0 / rawValue - 1.0));

  // Use the Steinhart-Hart equation to convert resistance to temperature in Celsius
  float temperatureCelsius = 1.0 / (log(resistance / 10000.0) / 3950 + 1.0 / 298.15) - 273.15;

  // Print the temperature to the Serial Monitor
  Serial.print("Temperature: ");
  Serial.print(temperatureCelsius);
  Serial.println(" °C");

  // Add a delay to control the rate of temperature readings
  delay(1000);
}