Over at BoingBoing Gadgets, John Brownlee writes up an LED contact lens case, a post which can be described only as pure speculation -- Brownlee's eyes manage to achieve focus precisely once a day, at ...

The new LED Countdown light communication system from Rite-Hite Corp uses LED lights to let workers know exactly how much time there is before a high-speed door closes. The new LED Countdown light ...

This ambient LED light designed by Jasper Hou is powered by a mechanical timer in the base. After giving the base a twist, the timer gradually releases its energy, powering the LED light as it unwinds ...

This simple LED driver circuit allows us to drive up to seven LEDs by using a single NiMH (Nickel Metal Hydride) AA cell. The circuit produces voltage pulses at a much higher level than the input ...