LED candles are neat, but they’re very suboptimal for wish-making: you can’t blow them out. Unless you take the circuit from ...

It’s the evening before publication, and a pair of Hackaday writers convene to record the week’s podcast. This week Elliot Williams is joined by Jenny List, and it’s a bumper ...

Think about how easily you recognize a friend in a dimly lit room. Your eyes capture light, while your brain filters out background noise, retrieves stored visual information, and processes the image ...

Abstract: GaN-based light-emitting diodes (LEDs), which are regarded as one of the most important alternative light sources for visible light communication (VLC) systems, have been constrained by ...

Abstract: Mid-infrared light-emitting diodes (IRLEDs) offer high modulation bandwidth, high apparent radiance, and analog grayscale operation, making them attractive for large-area patterned emitters ...