[Fabien] decided he wanted to build his own LED display and ended up with something ... The original plan was to drive these with an Arduino, but with so many pixels he quickly ran out of RAM.

Who needs a 1920×1080 OLED display when you can have an 8×8 matrix of LED goodness ... to get the signal up to a reasonable level for an Arduino Uno to detect. The result is impressive for ...

Another feature that the R4 WiFi boasts is its 12x8 red LED matrix, which is readily programmable using the Arduino_LED_Matrix library. This feature can come in handy in various Arduino projects ...