MAX7219dot matrix module ，A control module ，single chip microcomputer module
1. A single module can drive an 8*8 common cathode matrix
2. Module working voltage: 5V
3. Module size: length 5 cm X width 3.2 cm X height 1.5 cm
4. With 4 fixing screw holes, the hole diameter is 3mm, which can be fixed by our M3 copper column
5. Module with input and output interface, support multiple module cascade
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 the first 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. ..
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