MAX7219 dot matrix module microcontroller module 4 in one display MAX7219 dot matrix module microcontroller module 4 in one disp

Wiring instructions:
1. The left side of the module is the input port, and the right side is the output port.
2. When controlling a single module, you only need to connect the input port to the CPU.
3. When multiple modules are cascaded, the input terminal of one module is connected to the CPU, the output terminal is connected to the input terminal of the second module, the output terminal of the second module is connected to the input terminal of the third module, and so on.

Module parameters:
1. A single module can drive an 8*8 common cathode dot matrix
2. Module working voltage: 5V
3. Module size: Length 12.8 cm X width 3.2 cm X height 1.3 cm
4. With 64 fixing screw holes, diameter of 3mm
5. The module has input and output interfaces, supporting multiple modules cascading