Have a look at Untitled Document
Google: MPPT with ATmega
"To invent, you need a good imagination and a pile of junk."
Thomas A. Edison (1847 - 1931)
The problem is very little people know what MPPT stand for especially the T. Out of all, over 200 documents not one of the authors know that the T is for tracking the sun, in other words a MPPT system is to make the solar panel to track the sun and the only way to do it is by using a Micro Controller, I recommend a PIC MCU.
If your looking for a design idea, there is a relatively easy way to do it. Place 4 solar cells (circular, cut in 4) at the bottom of a tube and condition the output of each of the cells (I to V) converter. Rectangular cells should work too. When the light is maximized in the tube, each cell will have the same current.
Now you have to figure out which way to move the motors and you need some algorithm that avoids unnecessary movement due to clouds.
This is vary old thread If you are looking for help you should have started a new one.
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