This is much easier (and cheaper) than relying on GPS or an optical system for information about the location of the sun. Be sure to check out the video below of the solar tracker in action.

In many parts of the world, a solar energy system is a key part of subsistence, particularly when natural disasters strike. In poorer regions, tracking ... ranging from DIY solar-powered toys ...

For those with a solar panel on their balcony or garden, mysoltrk tracks the sun to get the most out of a small solar panel. [Fulvio] built the tracker ... allowing the system to steer the array ...