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3 V communication interface is a standard SPI interface Control interface a total of six pins (GND
Flyback diode to protect your microcontroller
With an integrated MCP23017 16-bit IO port expander you can add a full display capability to your project with only 2 pins of the I2C port
Operating Temperature (°C) -40 to 125
Instead of a L293D driver
8X8 LED DOT Matrix Module with MAX7219 Number of Displays:One 3 V communication interface isWiring instructions: The left side of the module for the entrance door, the right of an exit door when the control of a single module, is sufficient input port connected per CPU When a plurality of modules in cascade, input and output CPU termination, an input terminal of the second output end of the first module of a module, t It has the first two modules of the input terminal of the three termination modules, and so on. LED color: Red, Green, Blue
