8x8 R Click and 8x8 Y click are add-on board in mikroBUS form factor. They are compact and easy solutions for adding 8x8 LED matrix displays to your design. Boards feature MAX7219 8-digit LED display driver module as well as 64 LED diodes. Each 8x8 Click communicates with the target board microcontroller via four mikroBUS SPI lines (DIN, DOUT, CLK and CS). Boards are designed to use 5V power supply only, but they can be used with 3.3V MCUs as well.
Make sure to visit board webpages to get more information.