http://arstechnica.co.uk/gadgets/2015/09/freevolt-perpetual-free-rf-energy-=
harvesting-to-power-the-internet-of-things/

I think I've learned here on the piclist to run when the words "perpetual" =
and "energy/power" are used in the same sentence. :-)

"Freevolt harvests free volts (!) from a wide variety of RF radiation sourc=
es, which can then be used to power the various sensors and microcontroller=
s that make up the (are we there yet?) Internet of Things."



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