MAX7219 Dot Matrix LED Display – 8x8 Red LEDs for Arduino and Raspberry Pi

Easy-to-Connect SPI Module with Daisy-Chain Capability for Multiple Displays

This is a compact LED dot matrix display module with an integrated MAX7219 driver chip and included Dupont jumper cables, designed for easy visual output in microcontroller projects like Arduino, ESP32 and Raspberry Pi. It features an 8×8 red LED matrix (64 LEDs) capable of showing text, symbols and simple animations.

Key Features:

• 8×8 LED Matrix: 64 red LEDs arranged in a compact dot matrix format.

• MAX7219 Driver IC: Integrated driver that simplifies LED control via serial communication.

• Operating Voltage: 5 V DC – compatible with most microcontroller boards.

• Serial Interface (SPI): Requires only a few MCU pins (DIN, CLK, CS) to control the display.

• Cascade Support: Input/output connectors allow joining multiple modules for extended displays.

• Package Includes:

  • 1 × MAX7219 LED dot matrix module (8×8)

  • 5 × Dupont jumper cables (~20 cm each) for easy connectivity.

• Module Size: Approx. 5 × 3.2 × 1.5 cm – compact and easy to integrate.

Overview:
The MAX7219 LED dot matrix module provides an efficient way to add visual output to your microcontroller projects. Using the MAX7219 chip, it manages the matrix display through a serial interface, dramatically reducing required I/O pins while still giving fine control over all LEDs.

Benefits:

• Easy to use with Arduino, Raspberry Pi & other MCUs.

• Supports cascade configurations for larger visual displays.

• Minimal wiring thanks to SPI control.

Common Uses:

• LED message boards and clocks.

• Displaying visual indicators (time, temperature, text).

• Educational electronics and hobby projects.

   

A single module can drive an 8 x 8 common cathode lattice
Operating voltage: 5V
Size: 5 x 3.2 x 1.5 cm (L x W x H)
LED color: red
With four screws hole, aperture 3mm
With input and output interfaces, supports multiple modules cascade

Wiring instructions:

1. The module left side as an input port and the output port on the right
2. To control a single module, just connect the input port to the CPU
3. When cascading multiple modules, the input port of the first module connect to the CPU, the output port connect to the input port of the second one, and so on.

In the case of 51 MCU:

VCC → 5V
GND → GND
DIN → P22
CS → P21
CLK → P20

Note:

1. VCC and GND is not reversed, it would burn the chip!
2. When the 51 microcontroller P0 port controlling, must be connected to the pull-up resistor, it is recommended that the resistance of 4.7K--10K
3. Please install lattice into the round hole first, and then insert the round hole to PCB board and weld. Face the side of lattice with words, from left to right pin order is 123456. PCB board 1st pin is square pad!
4.Electrolytic capacitors long-pin as positive, short-pin as negative; ceramic capacitor hsa no positive and negative points