#include <LiquidCrystal.h>

// Initialize the LCD with the numbers of the interface pins
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);

// Define the analog pin connected to the NTC sensor
const int sensorPin = A0;

// Constants for the temperature calculation
const float BETA = 3950; // Beta coefficient of the thermistor (change according to your thermistor)
const float ROOM_TEMP = 298.15; // Room temperature in Kelvin (25 degrees Celsius)
const float RESISTOR = 10000; // Value of the fixed resistor in ohms (10k ohms)

void setup() {
  // Set up the LCD's number of columns and rows
  lcd.begin(16, 2);
  // Print a message to the LCD
  lcd.print("Temp: ");
  // Start serial communication for debugging
  Serial.begin(9600);
}

void loop() {
  // Read the value from the sensor
  int sensorValue = analogRead(sensorPin);

  // Convert the analog value to resistance
  float resistance = (1023.0 / sensorValue - 1) * RESISTOR;

  // Calculate temperature in Kelvin
  float temperatureK = 1 / (1 / ROOM_TEMP + log(resistance / RESISTOR) / BETA);

  // Convert temperature to Celsius
  float temperatureC = temperatureK - 273.15;

  // Print the temperature on the LCD
  lcd.setCursor(6, 0); // Move the cursor to the right of "Temp: "
  lcd.print(temperatureC);
  lcd.print((char)223); // Degree symbol
  lcd.print("C ");

  // Print the temperature to the serial monitor for debugging
  Serial.print("Temperature: ");
  Serial.print(temperatureC);
  Serial.println(" *C");

  // Wait 1 second before taking another reading
  delay(1000);
}