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Wireless Meat Thermometer

Jon Torrey
Intellectual 310 points
Other Parts Discussed in Thread: CC3200, ADS1118, LM35

Hi everyone,

I am here asking for some possible guidance on a side project I've been working on with the CC3200.  My intended purpose is to connect an ungrounded K-Type thermocouple to my CC3200 to create a thermometer to measure the internal temperature of meat while it is being cooked.  The board will host a local webserver with the current temperature of the meat so I am able to read it.  

Right now I am stuck on how to hook up the thermocouple to the board.  I've read on other forums that getting a MAX31855 breakout board would be recommended ( http://www.adafruit.com/products/269 ).

If anyone has any experience doing anything like I have mentioned above, any advice would be appreciated. 

  • 0
    Guru 86195 points

    Hi Jon,

         There is already a ADS1118 BoosterPack, that can measure temperature using Type K Thermocouples. You, can buy that and make it work for your CC3200 Launchpad. I don't think it is designed up to current booster pack standards, so you need to check the pin compatibility with CC3200 launchpad. If not pin compatible, you need to re-wire it by means of protoboard or other means.

    http://www.ti.com/lit/ug/sbau207/sbau207.pdf

         If you don't want to use this booster pack, you can learn from its circuitry and design your own booster pack

    - kel

  • 0 in reply to Markel Robregado
    TI__Expert 5025 points

    Markel,

    Thanks for sharing your suggestions!

    Jon,

    I am closing the thread, if you have further queries please open a new thread and add a link to this one for reference.

    Best regards,

    Naveen

  • 0 in reply to Naveen Narayanan
    Intellectual 310 points

    Markel, 

    Again, thank you for the suggestion.

    For my purpose, I bought the wrong type of thermocouple - the range it which it reads and the Celcius per mV were way too small for my liking.  I'm sure the 12-bit ADC could handle it but I thought of something else : 

    An LM35 temperature sensor with some heat shrink wrap around it will do just fine.  Even better, it's cheaper too!

    Thank you again Markel,

    JT