When it comes to LED matrixes, building one is just the first step. Then you have to decide what to display on it. [panjanek] ...

It’s always nice to see new developments in the world of electronic badges, and while there are events and badge teams ...

A compact Arduino-based system that reads ambient light levels using an LDR sensor, displays the measured illuminance (in lux) on a 16×2 LCD, and provides a color-coded visual indicator via an RGB LED ...