DIY gadgeteer Nate True has come up with a home-brew LED watch alternative to those Tokyoflash wristwatches that are all the rage. A mashup of a binary clock and one of those nifty persistence-of-vision displays, Nate's device even packs in a super-bright flashlight mode. You can follow his instructions to make your own, or if your soldering is as bad as mine you can buy a pre-built one for $189, and one lacking the enclosure for $89. [ via BoingBoing]