5pcs Geekcreit MAX7219 Dot Matrix LED Display Module 4-in-1 Display Geekcreit for Arduino - products that work with official Arduino boards

Specifications: A single module can drive a 8x8 dot matrix common cathode Working voltage: 5V Module size: 12.8 x 3.2 x 1.3 cm (L*W*H) With 64 fixing screw holes, hole diameter: 3mm Module with input and output interfaces, support for cascading multiple modules Wiring: 1. The left side of the module is the input port, and the right is the output port. 2. Control of a single module, the input port only need to receive CPU. 3. The more a module cascade and input end of the first module is connected with the CPU and input end of the input end of the output end is connected to the second module, output terminal of the second module connected with the three modules, and so on. For example: 51 VCC5V GNDGND DINP2.2 CS P2.1 CLKP2.0 Package included: 5 x MAX7219 Dot Matrix Module 5 x 5pin Dupont Cable