Measuring the speed of a rotating object is a common requirement. Knowing the speed of table and ceiling fans, as well as kitchen appliances such as mixers ...

The project illustrates the effect of persistence of vision to easily create a ceiling fan LED display. The project illustrates the effect of persistence of vision to easily create a ceiling fan LED ...

The idea of a fan with LEDs that spell out words as it spins is nothing new, but here’s one that’s programmable via USB. Polo Tech from Taiwan has patented a rotating LED fan display technology that ...

Got a Window? Use it! Chances are, you have a bookcase or some cabinets at home with large windows up front. Most of us do, and chances are, inside those bookcases or cabinets, we have lighting. Why?

If you’re a fan of the 27-inch iMac, but don’t want to give up the portability of your MacBook Pro or expandability of your Mac Pro, Apple thinks you’ll love its new 27-inch LED Cinema Display. The ...