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ADC0831 and mvolt fluctuations — Parallax Forums

ADC0831 and mvolt fluctuations

Eagle1Eagle1 Posts: 28
edited 2009-09-17 09:34 in BASIC Stamp
Recently Mike Green helped me get a sensor's input to my 2x16 serial LCD. Now I notice that when running the ADC0831 code alone or with LCD code I get mvolt fluctuations of +/_ 20 mVolts , is this normal ?

Thank-You-In-Advance

Comments

  • $WMc%$WMc% Posts: 1,884
    edited 2009-09-16 00:27
    Eagle1

    I didn't see Your other post. And I think many other user's didn't either.... If You post some code, I think it would help Your post.



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  • Eagle1Eagle1 Posts: 28
    edited 2009-09-16 20:57
    What I mean is with the following code is it normal for the ADC and Volts values to jump around .
    bs2
    bs2
    ADC0831.bs2
    459B
  • Eagle1Eagle1 Posts: 28
    edited 2009-09-16 21:33
    To further clarify, when I run this code and the debug screen comes up is it normal for the numerical values of ADC and VOLTS to vary with no input to the POT?
  • FranklinFranklin Posts: 4,747
    edited 2009-09-17 01:01
    doesn't the \9 signify 9 bits? And result is an 8 bit byte.

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    - Stephen
  • Eagle1Eagle1 Posts: 28
    edited 2009-09-17 09:34
    Stephen,

    Would that cause the the ADC (NUMBER between 0-255) or the voltage ( 0 to 5.0) to fluctuate in the debug window without changing the input?
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