These come in handy, and are easy to make, although this one looks a little more complex with that small circuit. The one I made myself uses the same tin, but is a little simpler using only a 9 volt battery clip, a +5v voltage regulator, and the usb port. It'll charge anything that can charge via usb.
These come in handy, and are easy to make, although this one looks a little more complex with that small circuit. The one I made myself uses the same tin, but is a little simpler using only a 9 volt battery clip, a +5v voltage regulator, and the usb port. It'll charge anything that can charge via usb.