Instructables user [llopez-garcia] was looking for something that would make him stand out at music events or clubs, and decided that an LED matrix built ... micro controllers, so he chose a ...

and the LED matrix displays are just 8×8 arrays of red/green LEDs, each driven by a HT16K33 LED controller IC. The enclosure and stand are both 3D-printed, and a PCB not only mounts the ...