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analog input

jcleaverjcleaver Posts: 17
edited 2006-04-28 15:41 in BASIC Stamp
·new question
dont see where the bs2 acepts a strick analog input ie var voltage from 0-5

see pot or rctime does not seem to fit

second part
if the stamp goes to output on startup will that damange a external device


thanks

Comments

  • PJAllenPJAllen Banned Posts: 5,065
    edited 2006-04-26 20:02
    http://forums.parallax.com/showthread.php?p=577581
    ·
  • jcleaverjcleaver Posts: 17
    edited 2006-04-27 12:09
    Does not seem to do what i want looking for something that will measure voltage (0-5) all the time
    and return a number relating to this does not have to be acccurate
  • Bruce BatesBruce Bates Posts: 3,045
    edited 2006-04-27 12:28
    jcleaver -

    Perhaps there wasn't enough specific information there for you to grasp the concept easily. Here is an applications note provided by Dr. Tracy Allen which explains it a bit more clearly and thoroughly:
    http://www.emesystems.com/BS2rct.htm#B_voltage

    It's that RCTIME method, or hanging an ADC outboard of the Stamp for measuring the voltage. The Stamp has no analog inputs, by design.

    Regards,

    Bruce Bates

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  • jcleaverjcleaver Posts: 17
    edited 2006-04-28 14:35
    thank you its just what i needed

    its great to have someone with your knowledge on this

    thanks again
  • Paul BakerPaul Baker Posts: 6,351
    edited 2006-04-28 14:47
    PJ does have knowledge in the matter, he is·just consise in the answer, especially when it is a commonly asked question.

    For future reference, do a search using http://search.parallax.com, had you typed RCTIME into the engine, you would have found Tracy's page in the first thread returned by the engine.

    Also Tracy's website contains a wealth of information on many subjects concerning the Stamp, when you have the time, take a look at it, it will provide you lots of knowledge on aspects of the Stamp in more depth than the Docs.

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    Post Edited (Paul Baker) : 4/28/2006 2:51:45 PM GMT
  • jcleaverjcleaver Posts: 17
    edited 2006-04-28 15:07
    Thanks for the help
    could not find the link could you give the address for tracys? This site again

    everybody is great on this forum
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2006-04-28 15:09
    The address is right in Bruce's message above.· You will need to copy/paste it.· When forum members use the Quick Reply it causes links to not become "active" by default.

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    Chris Savage
    Parallax Tech Support
    csavage@parallax.com
  • Paul BakerPaul Baker Posts: 6,351
    edited 2006-04-28 15:24
    Here's the base page for the stamp section of Tracy's website: http://www.emesystems.com/BS2index.htm

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  • jcleaverjcleaver Posts: 17
    edited 2006-04-28 15:41
    ty
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