Simplify the battery gauge with a 1-dot bar graph display
This display uses a cheap six-pin microcontroller and a tri-color LED to realize a simple alternative to the usual four-LED…
Testing solid-state lighting reliability
LED light sources continue to improve in reliability and overall performance, but still require additional research.
Teardown: Voice-activated, Wi-Fi-connected dimmer switch
Want to put "smart" lighting in your house? This smart dimmer combines a dual-microphone array and speaker, voice-command processing, and…
DOE lighting workshop explores lighting science and systems
This year’s DOE Lighting R&D Workshop covered topics like lighting for plants and human health, and integration of lighting and…
MicroLED displays: the challenges and advantages
MicroLED displays could replace LCDs and OLEDs in big-screen TVs in the not-too-distant future, if manufacturing challenges can be overcome.
Ensure EMC compliance in automotive LED design
The switch-mode power supplies LEDs require create an EMC compliance issue that needs to be addressed.
Solar day lamp designs use passive and active current-limiting circuits
This Design Idea provides complete instructions for designing solar day lamps using both passive and active current limiting circuits.
Teardown: Bluetooth-enhanced LED bulb
See how this Bluetooth LED light bulb compares to the wireless smart LED bulbs we've already dissected.
Li-Fi: An attractive alternative to Wi-Fi
The wireless communication technology is implemented in a space by way of LED lighting assemblies that include signal-processing circuitry and…
Teardown: Wi-Fi LED light bulb
After dissecting a Zigbee-based smart LED light bulb, our teardown engineer puts one based on a different wireless protocol (Wi-Fi)…