MAX7219 Single 8x8 Dot LED Matrix Module – Serial Control Display Unit

All Technical Details

• Pin Configuration: VCC, GND, DIN (Data In), CS (Chip Select), CLK (Clock).

• Cascading Pins: DOUT (Data Out), CS, CLK pins available for linking the next module in the series.

• Compatibility: Fully compatible with 5V logic levels; for 3.3V controllers (like ESP32), a logic level shifter is recommended for long-term stability.

• LED Driver Type: Common Cathode configuration.

• Refresh Rate: High-speed internal scan frequency ensures smooth animations and text scrolling.

Prototyping & Engineering Tips (Robogears Exclusive)

• Power Management: A single 8x8 matrix can draw up to 150mA when all LEDs are on at full brightness. If you are linking four or more modules at your Pimpri workshop, ensure your 5V power supply can handle the cumulative current, as the Arduino's 5V pin may overheat.

• Wiring Protocol: When daisy-chaining, the DOUT of the first module must connect to the DIN of the second. The CLK and CS pins should be connected in parallel across all modules.

• Library Tip: Use the LedControl or MD_MAX72xx libraries for Arduino. They provide simple commands to display characters, shapes, and custom animations with just a few lines of code.

• Common Ground: Always ensure that the GND of your external power supply is shared with the GND of your microcontroller to maintain signal integrity and prevent data corruption.

Package Includes

• 1 x MAX7219 Single 8x8 Dot LED Matrix Module

• 5 x Female-to-Female Jumper Wires (Optional/As per Batch)

Image Disclaimer

Product images are shown for illustrative purposes only. The color of the 8x8 matrix housing (typically black) or the PCB silkscreen may vary slightly between batches, though all technical specifications and the MAX7219 driver functionality remain as described.