Help with DS1821 1-wire Thermometer


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  1. #1
    sanpic's Avatar
    sanpic Guest

    Question Help with DS1821 1-wire Thermometer

    Hi to all.


    I need a source code to read negative and positive temperature values using a DS1821.
    I 'm using a 16f877A pic uC.

    Thanks.


    Please help me.

  2. #2
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    here's one for DS1820... might be useful to start
    http://www.picbasic.co.uk/support/Te...b1fd954c62ca8d
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.

  3. #3
    jojokatada's Avatar
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    take a look at this code
    Attached Files Attached Files

  4. #4
    jojokatada's Avatar
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    this code i am is using for pic16f84a but it can be easily modify for any 14 core pic

  5. #5
    sanpic's Avatar
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    Talking

    Thank friends.

  6. #6


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    Default speed

    any help on using the temp program with a 20 osc setting
    timeing seems to be a issue

  7. #7
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    I need a picbasic code to read DS1821. NOT for DS1820. Help!

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    Quote Originally Posted by zdravko View Post
    I need a picbasic code to read DS1821. NOT for DS1820. Help!
    maybe the Help you need is at hand with the DS18S20


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  9. #9
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    I don't have DS18S20. What's the difference between DS1820 and DS1821 ?

  10. #10
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    Quote Originally Posted by zdravko View Post
    I don't have DS18S20.

    If you are not able to buy one locally you could ask them to send you a sample.

    www.maxim-ic.com/quick_view2.cfm/qv_pk/2815

    What's the difference between DS1820 and DS1821 ?
    there are a few differrences it depends which one is significant to you, maybe take a look on the same site, you could contact them as well if you wish.



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