Adafruit Mini 8x8 LED Matrix w/I2C Backpack - Red : ID 870 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Guide for 8x8 Dot Matrix MAX7219 with Arduino | Random Nerd Tutorials
8x8 8*8 Max7219 Dot Led Matrix Module Mcu Led Display Control Module For Arduino 5v Interface Module Output Input Common Cathode - Integrated Circuits - AliExpress
8×8 LED Matrix Tutorial + Project Code and Schematic - Hackster.io
8x8 88 RGB LED Matrix Module Driver Board + Full Color Rainbow V2.0 Mini Dot Matrix RGB LED Driver Shield for Arduino AVR: Amazon.com: Industrial & Scientific
Control an 8x8 matrix of LEDs. | Arduino Documentation
Using 8x8 Dot Matrix LED with Arduino & Its Cascade Connection [Tutorial]
8X8 Matrix Pinout | Led matrix, Arduino circuit, Circuit diagram