Skin Temp Sensor Build

Discussion in 'The Projects Forum' started by dakrisht, May 23, 2013.

  1. dakrisht

    Thread Starter New Member

    May 23, 2013
    3
    0
    Hi everyone,

    New to the forums and new to circuits and electronics, so forgive the dumb questions, trying to learn.

    I want to create a skin temperature sensor to measure slight changes in skin temperature variation with an Arduino Uno.

    I was looking at the TI TMP006 (http://www.ti.com/product/tmp006) sensor but not quite sure what IC I need or the best way to integrate the IC with a bandage or strap, for example, to display the temperature data in the Arduino console.

    Would love to hear some thoughts and help on what I need to buy, learn and assemble to get this made.

    Thanks in advance
     
  2. LDC3

    Active Member

    Apr 27, 2013
    920
    160
    Since the sensor communicates through a serial line, you will need a microprocessor to read the temperature. The microprocessor can then display the temperature on an LCD.
     
  3. dakrisht

    Thread Starter New Member

    May 23, 2013
    3
    0
    Right, I get that. The arduino would be the micro controller in this case and the output would be in the arduino console. My questions were: what is the right sensor for skin temperature with a high-degree of accuracy and variability and what are some additional components I would need? I.e. ADC, etc?
     
  4. wayneh

    Expert

    Sep 9, 2010
    12,090
    3,027
    I'd use an LM35 and one of those free multimeters you can get. The output voltage of the LM35 is 10mV per °C, so body temp will read 0.370 volts. Total cost less than $1.
     
  5. Bernard

    AAC Fanatic!

    Aug 7, 2008
    4,170
    395
    I'm cheap, so a bead thermistor & a DVM , with a low V battery would have to do. A μC could take out the non linearity & display results.
     
  6. dakrisht

    Thread Starter New Member

    May 23, 2013
    3
    0
    Thanks for the tips guys. I was able to get a bunch of free samples from TI, so I'll be using those. I guess from a beginners perspective (me) - any recommend tutorials or reads on how to build a skin temp sensor with an Arduino?
     
  7. wayneh

    Expert

    Sep 9, 2010
    12,090
    3,027
    What are you really trying to do? Skin temperature is hard to measure accurately without the measurement itself changing the result. In fact I think you'd need a non-contact technique (like IR) to get an accurate value. Any belt, pad, bandage, etc. will influence the result. That may be OK if you're looking for changes.
     
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