Solar Bottle Bulb
in Solar Bottle Bulb - 09 Feb, 2014
by solarman11011 - no comments

In my opinion, one of the most ingenious sun-powered inventions of this century (and even the one before) is the solar bottle bulb. And why not? It’s definitely dirt cheap, requires just 3 to 4 components that are easy to have, and just about everyone is capable of assembling it in no time at all. […]