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.