To add our USB power port, we'll steal some DC voltage from the clock. We are going to run power through a LM 7805 voltage regulator to take it down to 5 volts. Adding a 220uF capacitor between the ...

You know how sometimes you dream up a gadget and then you discover that someone has actually built it? A few weeks ago we were chatting with our pal Kiho (of the famed TKNY gadgets store here in New ...

Here is another combo USB gadget, the USB Hub Alarm Clock. This fun USB combo gadget features four USB 2.0 ports, and a built-in clock with an alarm function, which can display the time and date. This ...

Engadget has a nifty guide for adding 5 volts of USB power to your alarm clock. Once you've completed your USB-ported alarm clock, you can power all of your favorite low-consumption USB devices, like ...