Daily DIY

This is for supplying power to a USB device even while it is unplugged from the host computer.

For example, it could be used to power a host of desktop toys which are programmed by a computer via the usb port, and then operates independently, while being still powered by the usb port.

This will allow the device to dispense with internal batteries, and therefore be of simple design.

The single cell Li-ion charger is detailed in this instructable: http://www.instructables.com/id/EMAV8NGTLXEV0G2TSC/

I have an idea of combining my USB hub, http://www.instructables.com/id/EEXHOBCAOEEUR4U24X/ , with this to have a battery powered four port UPS USB hub.

With a tweety bird theme, of course.

This used to be another similiar post to this one, but that seems to have disappeared.

By: neelandan Source: explore