On Mon, 22 Nov 2010 11:37:36 -0600, John Fields
wrote:

So how do you plan to determine the amount of local daylight on an
ongoing daily basis??
JF

http://en.wikipedia.org/wiki/Sunrise_equation
I did a solar panel tracker (prototype) that used this method. Rather
than actually tracking the sun, which is affected by glass building
reflections, headlights, street lights, weather, eclipses, etc, I just
plug in the lat-long, and it crunches the numbers.


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
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