// Define the pin connected to the NTC thermistor
const int thermistorPin = A0;
#include <LiquidCrystal.h>

// Define the series resistor value in ohms
const float seriesResistor = 10000.0; // 10k ohms

// Constants for the Steinhart-Hart equation
const float A = 0.001129148;
const float B = 0.000234125;
const float C = 0.0000000876741;
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
 Serial.begin(9600);
 lcd.begin(16, 2); 
 
}

void loop() {


  // Read the analog value from the thermistor
  int rawADC = analogRead(thermistorPin);
  
  // Convert the analog value to resistance
  float resistance = seriesResistor / ((1023.0 / rawADC) - 1);
  
  // Calculate temperature using the Steinhart-Hart equation
  float temperatureK = 1 / (A + B * log(resistance) + C * pow(log(resistance), 3));
  float temperatureC = temperatureK - 273.15; // Convert Kelvin to Celsius
  lcd.clear();    // Clear the LCD screen
  lcd.setCursor(1, 0); // Set cursor to the first column of the first row
  lcd.print("Temp: ");
  lcd.setCursor(7, 0);
  lcd.print(temperatureC);
  lcd.setCursor(13, 0);
  lcd.print("C");

  
  // Print temperature to serial monitor
  Serial.print("Temperature: ");
  Serial.print(temperatureC);
  Serial.println(" °C");
}