[Stefan Schüller] was a fan of the LED signs that display arrival information for the trams and buses in their city of Zürich. [Stefan] was having trouble finding a source to purchase the signs ...

and it’s even more satisfying to use a matrix of them as a graphic display. [bitluni] built an RGB LED display with Pi Pico to which you can share a pixelated version of your PC’s screen.

In other words, changes to the computer screen's brightness can create vulnerabilities that hackers can take advantage of with some effort. "In the proposed modulation, the RGB color component of ...

triggered by ultraviolet LEDs built into the RGB matrix. The system sounds relatively simple, but requires some fairly fundamental changes to the pixel array behind the screen. Where most screens ...

The big difference is that the InWin 309 offers an enhanced punchy front panel colour capability thanks to its clear, square cell, RGB LED matrix front panel - so overall it is "brilliantly bolder ...