No problem; just order a big PCB and some WS2812s ... [elliotmade]’s lead and incorporate fiber optics into your LED matrix. The build starts with a 16×16 matrix of WS2812B addressable LEDs ...

These paper-thin laser-cut steel sheets are a handy way to apply a schmear of solder paste to the pads of a PCB before component ... ve got some plain old 8×8 LED matrix displays you want to ...