>How much resolution do you need?  I just used a fixed 10K resistor as half
>of the voltage divider and the CdS cell as the other half, but of course
>I'm just detecting daylight so I'm only feeding a comparator.  You could
>use a 1K resistor as half a voltage divider and still get 75% of the full
>ADC range if it's 4K in the light, or 87.5% if it's 7K.
>
>Dale

No specific resolution, but more is better. I am just doing this trying to
learn to use pics and electronics more, so I picked a random (and almost
useless) project. So it is now an exercise in trying to solve a problem with
certain constraints. Thank you.

Brian.


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