MAX7219 Module

Features:
1. The single module can drive a 8 * 8 common cathode lattice
2. The module voltage: 5V
3. Module Size: 32mm x 32mm x 13mm
4. with 4 fixing screw holes, diameter 3mm
5. module with input and output interfaces, support for cascading multiple modules

Wiring instructions:
1. The left side of the module as an input port, an output port on the right.
2. When the control of a single module, simply input port connected to CPU
3. When cascading multiple modules, the first 1 input termination module of the CPU , the first output end 2 input modules, the first 2 output modules terminating the first three input modules, and so on . ..