Geekcreit 5pcs MAX7219 LED Dot Matrix Display Module 4-in-1

Product Specifications:
- Single module controls an 8x8 dot matrix, common cathode
- Operating Voltage: 5V
- Module Dimensions: 12.8 x 3.2 x 1.3 cm (L x W x H)
- Equipped with 64 mounting holes; Hole Diameter: 3mm
- Features both input and output interfaces, allows for cascading multiple modules

Wiring Instructions:
- The left side of the module serves as the input port, the right is the output port.
- For single module control, connect the input port directly to the CPU.
- For cascading multiple modules: Connect the CPU to the input of the first module, then connect the output of the first module to the input of the second module, and so forth.

Example Connection:
- VCC to 5V
- GND to GND
- DIN to P2.2
- CS to P2.1
- CLK to P2.0

Package Includes:
- 5 x MAX7219 Dot Matrix Module
- 5 x 5-pin Dupont Cable