8x8 R Click is an add-on board in mikroBUS form factor. It’s a compact and easy solution for adding 8x8 RED LED display matrix to your design. It features MAX7219 8-digit LED display driver module as well as 64 RED LED diodes. 8x8 R Click™ communicates with target board microcontroller via four mikroBUS™ SPI lines (DIN, DOUT, CLK and CS). The board is designed to use 5V power supply only, but it can be used with 3.3V MCUs as well.
Matrices are some of the coolest ways to play with LEDs when it comes to MCUs. It is also difficult to create smooth and pretty LED pictures or font on matrices without a library. With a good library you can make the leds look like any character you want, and even draw pictures.