What would you do with a wireless LED? Maybe lighting in a model display or a checkerboard? We wondered if you could use two or more power frequencies to signal (for example, 200 kHz lights a red ...

The LED is connected to a simple analog modulator circuit, which takes an audio signal as its input and sends the data to the light. The solar cell sends its data, with the help of a capacitor ...

The best LED light strips make for great under-cabinet and accent lighting. See how some popular options performed during hands-on testing.