This is a Max7219 driven 8x8 dot matrix led module. Total 64 dots are controlled by row and segment. This module is serially driven by any microcontroller or Arduino using only 3 lines. This operates at 5V DC. LED produces Bright Red dots. More than One module can be used by cascading them for large display boards. Suitable for advertisements or any type of message display. This MAX7219 Dot matrix LED display module supported by Parola Library as Generic Hardware.