I believe this "how measuring V" problem,
should be changed into "how to filter V measured".

To designe a third order pi/T filter, that are all
being needed. Or resistant net is asked?



----- Original Message -----
From: "fred jones" <boattow@hotmail.com>
To: <piclist@mit.edu>
Sent: Monday, November 14, 2005 8:08 PM
Subject: [PIC] How to read Battery voltage with PIC


>
> Hi all,
> I'm sure this is an easy question for many of you so I hope I don't get
> flamed.  I searched but can't find the answer in the archives although I'm
> sure it must be there somewhere.  This is not my strong point so I thought
> I'd ask for help.
>
> I am building a device that will run off of a 12V gel cell battery.  It
will
> use a 16F877 PIC powered with a 7805 regulator.  I'd like to be able to
read
> the voltage of the gel cell and display it on the 2X16 LCD display.  I'm
> sure I can't connect the 12V batter into the A2D of the PIC but I'm not
sure
> what the proper method would be.  Any help is appreciated.
> Thanks for your time,
> FJ
>
>
> --
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