Wiring Manual:
Step1: Left is an input port, right is an output port
Step2. When controlling a single module, just enter a port to the CPU
Step3. When more than 3 modules cascaded output input termination CPU, the input output termination module of the first two modules of the first one, the first two modules of the termination input terminal of the three modules, and so on.
Package included:
6* MAX7219 8x8 Dot Matrix LED Display Module