Hand-Crank USB Charger
I wanted to be able to charge my cell phone, MP3 player, and other USB devices while not having plug-in power available. This hand-crank generator, originally designed by Ben Heck, ended up working the best.
Continue ReadingI wanted to be able to charge my cell phone, MP3 player, and other USB devices while not having plug-in power available. This hand-crank generator, originally designed by Ben Heck, ended up working the best.
Continue Reading