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Connecting and using LM34-DZ — Parallax Forums

Connecting and using LM34-DZ

BobValBobVal Posts: 48
edited 2006-05-10 01:31 in General Discussion
http://info.hobbyengineering.com/specs/NATSEMI-LM34.pdf


Has anyone connected a LM34-DZ to a javlin?

If you did could you explain·how and what I need to do to use one of these probes.

Thanks bob

Comments

  • Peter VerkaikPeter Verkaik Posts: 3,956
    edited 2006-05-06 20:47
    There is some text about an LM34 connected to a javelin in this powerpoint presentation:
    http://ranger.uta.edu/~huber/cse4392_SmartHome/Lectures/Sensors2.ppt
    Basically, you would use the ADC vp to measure the LM34 output voltage.

    regards peter
  • Scott/ChicagoScott/Chicago Posts: 8
    edited 2006-05-10 01:31
    Bob,

    I'm using a MAX1270 12-bit analog-to-digital converter (specifically the MAX1270ACNG) to connect a similar temperature probe to the Javelin Stamp. This could be used to directly read the voltage but I use an LM324N op amp to scale up the voltage to provide better resolution.

    Let me know if you have any questions about this approach.

    Regards,
    Scott
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