It is a combination of 4 8x8 LED dot matrix displays with MAX7219 driver chip on a single PCB. It offers a total resolution of 8x32 pixels. It works with SPI communication protocol and is controlled by connecting to only 3 pins (DIN, CS, CLK) of Arduino. The brightness level can be adjusted in 16 steps in software. With popular Arduino libraries such as MD_Parola and MD_MAX72xx, scrolling text, animated transitions, different fonts and special characters can be easily created. It is widely used in projects such as time, date, temperature display, notification panel and scoreboard. Modules can be added to each other with cascade connection to create longer screens. It is supplied with 5V and is also suitable for portable projects thanks to its low power consumption.
