Recently, we published an entry-level Arduino project with a single seven-segment LED display. Although it’s an amazing DIY project, we noted that most of the readers are looking for more advanced ...

Few would argue that LEDs today are ubiquitous devices. For many years, however, LEDs were little more than indicator lights. They were predominantly red, although green and yellow versions later ...

Targeting indoor applications such as audio and video products, consumer electronics, and panel instrumentation, this 20-segment bar graph is available in either lunar white light (see photo) or blue ...