>The PIC could control the process, checking the >sun's intensity and position, and adjusting the >panel tracking motor for the best total power produced. >:o) Of course you will run the PIC off its own solar panel so it is not pinching power produced by the main panels... :o) -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.