gnupic: Pic A/d Weirdness.
Subject:
Re: Pic A/d Weirdness.
From:
Scott Dattalo ####@####.####
Date:
10 Nov 2002 03:17:47 -0000
Message-Id: <Pine.LNX.4.44.0211091909160.26250-100000@ruckus.brouhaha.com>
On Sat, 9 Nov 2002, Declan Moriarty wrote:
> I have a little pic project goine here - e v e n t u a l l y!
>
> The one fly in the ointment is a temprature routine, in which my A/D doesn't
> make sense, but returns a value of 3ff for the 10 bits :-(
Try replacing the temperature transducer with a voltage source that can be
varied. The best "voltage source" in your case may be a potentiometer. If
you connect the two ends of the pot to Vref- and Vref+ and connect the
wiper to your analog input, then you should be able to turn the knob on
the pot and cover the full analog range. I'm not suggesting that this will
fix your problem, but it can remove one of the unknowns.
Scott
