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 ...

It’s a hard pill for the alarm clock industry to swallow, but the fact of the matter is that we don’t really need them anymore. Smartphones have been reliably waking us up for years now, and they do ...

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 ...