// References for the code taken from: http://www.learningaboutelectronics.com/Articles/LM335-temperature-sensor-circuit.php and https://simple-circuit.com/arduino-lm335-sensor-thermometer/

// Choose the analog pin used
int analogPin= 0;

void setup()
{
Serial.begin(9600);
}

void loop()
{

// comparing different ways to calculate Celcius

Serial.println(analogRead(analogPin));

// (Voltage * analogRead) / 1024.0 * 100.0 - 273.15
float celsius1 = (5.0 * analogRead(analogPin)) / 1024.0 * 100.0 - 273.15;
Serial.print(celsius1);
Serial.println(" degrees Celsius");

// first calculate kelvin and then celcius 
float kelvin = analogRead(analogPin) * 0.489;
float celsius2 = kelvin - 273.15;
Serial.print(celsius2);
Serial.println(" degrees Celsius");

// first calculate millivolts, then kelvin and at last celcius
int voltage = analogRead(analogPin);
float celsius3 = ((voltage/1024.0)*5000)/10-273.15;
Serial.print(celsius3);
Serial.println(" degrees Celsius");
Serial.println();

// This makes loop to start every 5 seconds
delay(5000);
}