#include <LiquidCrystal.h>
#include <math.h>

// Initialize the LCD with the pins
LiquidCrystal lcd(2, 3, 4, 5, 6, 7); // RS, E, D4, D5, D6, D7

// Define the pin for the NTC sensor
const int ntcPin = 15; // GP15

// Constants for the NTC thermistor
const float BETA = 3950; // Beta coefficient
const float R0 = 10000;  // Resistance at 25 degrees Celsius

void setup() {
  // Start the LCD
  lcd.begin(16, 2); // for a 16x2 LCD
  lcd.print("Temp: ");
}

void loop() {
  // Read the analog value from the NTC sensor
  int ntcValue = analogRead(ntcPin);
  
  // Convert the analog value to resistance
  float resistance = (1023.0 / ntcValue) - 1.0;
  resistance = R0 / resistance;
  
  // Convert the resistance to temperature using the Beta parameter equation
  float temperature = 1.0 / (log(resistance / R0) / BETA + 1.0 / 298.15) - 273.15;
  
  // Print the temperature to the LCD
  lcd.setCursor(6, 0);
  lcd.print(temperature);
  lcd.print(" C");
  
  // Wait for a second before the next reading
  delay(1000);
}