5mm 8*8 RGB Dot Matrix LED Display Shield+Matrix Driver shield for Arduino DIY | eBay
MAX6953 2-Wire Interfaced, 2.7V to 5.5V, 4-Digit 5 x 7 Matrix LED Display Driver | Maxim Integrated
Amazon.com: CANADUINO 8 x 8 x 4 Dot-Matrix Display with 64 Blue LEDs and MAX7219 Driver - cascadable : Electronics
MAX7219 LED Display Driver module with 4pcs 8x8 Dot Matrix LED Display on PCB
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
Grove - RGB LED Matrix w/Driver | Seeed Studio Wiki
How does a dot matrix led driver know the voltage of an led? - Electrical Engineering Stack Exchange
Making a 8×40 LED matrix marquee using shift registers | Embedded Lab