Creatively Useful LED Fan Clock
Do you keep getting hot in your office and left constantly wondering what time it is? Then we have the perfect product for you. The USB LED Fan Clock not only will keep you cool but it will also display the time on a digital analog clock projected in mid air. This fan may seem like a novelty, and it may be that, but for only US$10 on Amazon, it's hard to pass up. It would make the perfect gift for a gamer or someone who works on their computer all day. The video below will take you through some of its functions.
The fan creates an LED clock using perfectly timed LEDs so that your eyes perceive the image of a lighted clock in the air. This novelty little display makes for a fun desk gadget or something to give to a coworker.
Creating systems that create images using spinning LEDs isn't actually that hard, and if you look around on the internet you can find many tutorials walking you through the process. If you want to save yourself the trouble, though, you can get this LED fan clock off Amazon here.