Originally posted by jflorey2
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If I cannot do this manually, how does an MPPT charge controller manage to do this with a battery, which has a very low impedance as far as I know?
Originally posted by jflorey2
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Can you show me a few simple math examples with volts and current and power, and what happens when cloudy conditions start to limit the power coming out of the panel?
Originally posted by jflorey2
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Originally posted by jflorey2
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How would this change things? My pi would still die when a cloud passed by. Just as it would without an UVLO... right?
Originally posted by jflorey2
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Having a fully fledged charge controller defeats the purpose of this exercise as I am then back to needing a battery of some kind. This is the setup I have now. I want a setup which is much cheaper, to see if simply buying a lot more panel area is more cost effective than setting up a system that requires a battery. Imagine that the pi is producing something valuable, like bitcoins. So every hour of on-time has a certain yield. Will the yield over a year be the same, lower or higher given a $100 system that is based on small panels, an MPPT solar charge controller and a lead acid battery, OR a system which has a huge panel and a cheap buck converter. Also factor in replacing the lead acid battery.
(The bitcoin thing is just an example, my pi won't be generating fortunes for me I understand that
-Michael
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