In fact, it's considered the most popular among the Uno boards and the most ... WiFi boasts is its 12x8 red LED matrix, which is readily programmable using the Arduino_LED_Matrix library.

“Uno R4 WiFi includes an error-catching ... WiFi’s LED matrix The on-board 12 x 8 (96pixel) matrix of red LEDs (photo right) is Charlieplexed for pixel-level addressing. Arduino_LED_Matrix API is ...

You’d probably get something like [ElectroBoy]’s 8051-based Arduino Uno. The board itself also has some differences from the original Arduino Uno. First of all, it has a USB type-C port ...