We’re a big fan of solar technology, and even bigger fans of the Raspberry Pi.  So when we found that Adafruit had some cool parts that would let us run a solar-powered Raspberry Pi, we got to work!  The idea is simple, a Raspberry Pi that can safely and happily live outside without any wires that would keep it close to home.

Full article here:
Weekend Project: Solar Powered, Outdoor Raspberry Pi (polyideas)