// These constants won't change.  They're used to give names
// to the pins used:
const int analogInPin = 1;  // Analog input pin that the potentiometer is attached to
int i = 0;

int sample = 30;
float rawArray[30];

float raw;
float averageRaw;
float sumRaw;
float referenceVoltage;
float volts;
float voltDivisor;
float millivolts;
float kelvin;
float celcius;

void setup() 
{
  Serial.begin(57600); 
  //arduino duemilanove atmega328 4.98v
  referenceVoltage = 4980;
}

void loop() { 

  raw = analogRead(analogInPin);    
  
  rawArray[i] = raw;
  for (int i = 0; i < 30; i++) 
    sumRaw = sumRaw + rawArray[i];

  averageRaw = sumRaw/sample;
  //Arduino analogReads in a value 0-1024
  voltDivisor = 1024/referenceVoltage;
  millivolts = averageRaw/voltDivisor; 
  kelvin = millivolts/10;
  volts = millivolts / 1000;
  celcius = kelvin - 273.15; 

  clrScr();
  Serial.print("averaged=");
  Serial.print(celcius);
  Serial.print("C");  
  // voltage divisor = 1024/5v = 204.8  
  millivolts = raw/voltDivisor; 
  kelvin = millivolts/10;
  // convert to kelvin:   [°C] = [K] − 273.15
  celcius = kelvin - 273.15; 
  Serial.print(" instantTemp=");
  Serial.print(celcius);
  Serial.print("C");
  
  Serial.println("");
  Serial.print("kelvin=");
  Serial.print(kelvin);
  Serial.print("K");
  
  Serial.println("");
  
  Serial.print("v=");
  Serial.print(volts);  
  Serial.print(" mV=");
  Serial.print(millivolts);
  
  Serial.println("");

  Serial.print("analog");Serial.print(analogInPin);Serial.print(":");
  Serial.print(raw);  

  i++;
  if (i >= sample) {
    i = 0;
  }
  sumRaw = 0;

  // wait n milliseconds before the next loop
  // for the analog-to-digital converter to settle after the last reading:
  int n = 200;
  delay(n);                     
}

///////////////////////////////
//  Tellymate functions
///////////////////////////////

void clrScr(){
  #define CHAR_ESC '\x1B'
  Serial.print( CHAR_ESC ) ;
  Serial.print( 'E' ) ; // clear screen
}