[En-Nut-Discussion]Problem with ADC

[Alexander Baranov]

Well, here is one of options:
Knowing the range of your input voltage  from +V to -V you have to determine 
the zero level as ((+V)-(-V))/2. For example, if you have to measure signal 
from +2V to -2V you have to shift level to 2V. Then +2V will turn to +4 
and -2V - to 0V. After that you can make an analog summer on an OP amlifier 
and a +2V reference, which will  perform this shift. After reading ADC value 
you have to subtract 2V from the result.
Regards, Alex
----- Original Message ----- 
From: "Tommaso Fabbri" <atfabbri at gmail.com>
To: <en-nut-discussion at egnite.de>
Sent: Wednesday, May 31, 2006 12:38 PM
Subject: Re: [En-Nut-Discussion]Problem with ADC


> What kind of hardware i have to connect to the ethernut?
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