A library for the MAX7219 and the MAX7221 Led display drivers.
The library supports multiple daisychained drivers and supports Led-Matrix displays as well as 7-Segment displays.
Maintainer: Eberhard Fahle
This library is compatible with all architectures so you should be able to use it on all the Arduino boards.
To use this library, open the Library Manager in the Arduino IDE and install it from there.