modul display max7219 dot matrix arduino

Features:

Condition: New    
A single module can drive an 8 8 common cathode lattice    
Module Operating voltage: 5V    
Module size: 5 x 3.2 x 1.5cm (L x W x H)    
With four screws hole, aperture 3mm, by using our M3 Tongzhu fixed    
Module with input and output interfaces, supports multiple modules cascade    
Wiring instructions:
1. The module left as an input port to the output port on the right
2. The control of a single module, simply input port to the CPU
3. Multiple modules cascade input termination CPU, 2 output termination module, a module of the input of the input terminal, the output terminal of the first two modules of the first three modules, and so on ...
Take 51 MCU, for example:
VCC 5V
GND GND
DIN P22
CS P21
CLK P20    
Color and more details are shown as pictures
PLS NOTE that due to lighting effects, monitor's brightness/ contrass settings ect, there could be some slight differences in the color tone of the pictures and the actual item!