Re: [oopic] A2D Troubles

What are you using to set the voltage that you are reading? The PIC,
and likewise ooPIC A2D works quite reliably if it has a quiet voltage to
read. The A2D is limited in that the specs say the impedence of the
measured signal like needs to be less than 10K or the sample cap won't
reliably charge up for measurement.

DLC

Fiebigc wrote:

>I'm relatively green with the OOPic and I'm trying my first A2D
>connection. I have the OOPic connected to an LCD that I've tested
>throughly that displays the values of the A2D. My problem is that it
>gives a nominal value for the voltage that fluctuates around 512. It
>does give meaningful values from 2.5v to 5v but nothing below that.
>Does anyone know what I'm doing wrong? Thanks.
>
>Here is my code snippet. I've left out the LCD stuff for brevity.
>
>Dim volt As New oA2D10
>
>Sub main()
>
> volt.IOLine = 1
> volt.Operate = 1
>
> do
> LCD.String = STR$(volt.Value) 'Outputs data to display on LCD
> OOPic.delay = 10
> Loop
>
>End Sub
>
>
>
>
>Yahoo! Groups Links
>
>
>
>
>

--
------------------------------------------------------
Dennis Clark ooPIC Tech Support
www.oopic.com
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