MLX90614 BAA + UNO R3 | Unable to receive serial data via laptop

Other Hardware Sensors
1

So...

I just picked up a new Arduino R3, a Protoshield v2, and a MLX90614 BAA (infrared thermometer)

I have all the latest software (as of 2013). I have this thing wired exactly as its wired in the blog post http://bildr.org/2011/02/mlx90614-arduino/ and for some reason can't get any feedback on the serial monitor on my laptop.

I open up the serial monitor once the board is booted up and all I get on the screen is " Setup..."

Just what's in the setup section... (Serial.println("Setup...");

Any ideas what is keeping me from temperature data from streaming on my monitor window??

I've checked the voltage and all the components on the board and they check okay.

#include <i2cmaster.h>


void setup(){
	Serial.begin(9600);
	Serial.println("Setup...");
	
	i2c_init(); //Initialise the i2c bus
	PORTC = (1 << PORTC4) | (1 << PORTC5);//enable pullups
}

void loop(){
    int dev = 0x5A<<1;
    int data_low = 0;
    int data_high = 0;
    int pec = 0;
    
    i2c_start_wait(dev+I2C_WRITE);
    i2c_write(0x07);
    
    // read
    i2c_rep_start(dev+I2C_READ);
    data_low = i2c_readAck(); //Read 1 byte and then send ack
    data_high = i2c_readAck(); //Read 1 byte and then send ack
    pec = i2c_readNak();
    i2c_stop();
    
    //This converts high and low bytes together and processes temperature, MSB is a error bit and is ignored for temps
    double tempFactor = 0.02; // 0.02 degrees per LSB (measurement resolution of the MLX90614)
    double tempData = 0x0000; // zero out the data
    int frac; // data past the decimal point
    
    // This masks off the error bit of the high byte, then moves it left 8 bits and adds the low byte.
    tempData = (double)(((data_high & 0x007F) << 8) + data_low);
    tempData = (tempData * tempFactor)-0.01;
    
    float celcius = tempData - 273.15;
    float fahrenheit = (celcius*1.8) + 32;

    Serial.print("Celcius: ");
    Serial.println(celcius);

    Serial.print("Fahrenheit: ");
    Serial.println(fahrenheit);

    delay(1000); // wait a second before printing again
}

Eventually I want to use this sensors data to provide feedback to this PID code I have currently working with a thermocouples analog feedback... Once I get it working.

Arduino3.jpg

arduino4.png

2

Okay now I know my laptop and arduino + protoshield can communicate via serial because I just uploaded this script to test and it shows up on the serial window nicely....

I also adjust the baud rates accordingly to the code.

int ledPin = 13;
int ledPin2 =  12;
int buttonPin = 2;

int buttonState = LOW;
int oldButtonState = HIGH;
char serInput;

void setup()
{
  pinMode(ledPin, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(buttonPin, INPUT);
  digitalWrite(ledPin, HIGH);
 
  Serial.begin(115200);
}

void loop()
{
  buttonState = digitalRead(buttonPin);
 
  if (Serial.available() > 0)
  {
    serInput = Serial.read();
    Serial.println("Miny, Moe.");
  }
  if (buttonState != oldButtonState)
  {
    if (buttonState == HIGH)
    {
      digitalWrite(ledPin, HIGH);
      digitalWrite(ledPin2, LOW);
      Serial.print("Meeny, ");
    }
    else
    {
      digitalWrite(ledPin, LOW);
      digitalWrite(ledPin2, HIGH);
      Serial.print("Eeny, ");
    }
  }
 
  oldButtonState = buttonState;
}

So.... it seems like its something between the sensor and the arduino/code. OR.... I could have a bad sensor. Is there a way to test it?