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Matrix Dot Module Microcontroller 4 In One Display with 5P Line MAX7219

The Dot LED Matrix Module with MAX7219 driver chip is a compact and powerful visual display solution designed for microcontroller-based projects. This module integrates four 8 x 8 red LED matrices arranged into a 32 x 8 display and is controlled by the highly efficient MAX7219 LED driver IC. The MAX7219 handles multiplexing and current regulation internally, significantly reducing the processing load on the microcontroller. hanks to its simple SPI-like interface, the module requires only three control wires, making it easy to interface with popular development platforms such as Arduino, ESP8266, ESP32, and other microcontrollers. Multiple modules can be cascaded together to create longer displays for scrolling text, animations, counters, clocks, and custom symbols. The onboard PCB includes mounting holes for stable installation in permanent projects.

Package Includes

  • 1 x Dot LED Matrix Module with MAX7219 Driver


19.95 AED 19.95 AED (Tax included)

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Features

  • Integrated MAX7219 LED driver for simplified control and stable brightness
  • Four 8 x 8 LED dot matrix displays forming a 32 x 8 LED panel
  • Requires only three control lines (DIN, CS, CLK)
  • Supports cascading of multiple modules for extended displays
  • Adjustable brightness control via software
  • Low power consumption with efficient current regulation
  • Compact and lightweight PCB design
  • Onboard M3 mounting holes for secure mechanical installation

Specifications

  • Driver IC: MAX7219
  • Operating Voltage: 5V DC
  • Maximum Operating Current: 320mA
  • LED Color: Red
  • Matrix Configuration: 4 x (8 x 8)
  • Display Resolution: 32 x 8 dots
  • Single Matrix Size: 32 x 32 x 6 mm
  • PCB Size: 12.8 x 12.8 x 1.3 cm
  • Interface Type: SPI-compatible (DIN, CS, CLK)

Pinout Connection with Arduino

8×32 MAX7219 LED Dot Matrix Display with Arduino

Pin Description
VCC Connect to Arduino 5V pin for power supply
GND Connect to Arduino GND pin
DIN Data input pin, connect to Arduino digital pin 11
CS Chip select pin, connect to Arduino digital pin 10
CLK Clock pin, connect to Arduino digital pin 13

Applications

  • Scrolling text displays and message boards
  • Digital clocks and timers
  • Counters and scoreboards
  • Status indicators and system feedback displays
  • Educational and DIY electronics projects

Library Installation

Controlling the MAX7219 module is a complex task and requires a lot of lines of code. Fortunately, the MD_Parola library is available to remove those complexities so that we can issue simple commands to control the display.

To install the library navigate to Sketch > Include Library > Manage Libraries. From the Search, options look for ‘max72xx’ and click on install.This MD_MAX72XX library is a hardware-specific library that handles lower-level functions. It needs to be paired with MD_Parola Library to create many different text animations like scrolling and sprite text effects. Install this library as well.

Code:

 #include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>

#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
//#define HARDWARE_TYPE MD_MAX72XX::GENERIC_HW

#define MAX_DEVICES 4
#define CS_PIN 10

MD_Parola myDisplay = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

void setup() {

 myDisplay.begin();
 myDisplay.setIntensity(4);
 myDisplay.displayClear();
 myDisplay.displayScroll("How To Electronics", PA_CENTER, PA_SCROLL_LEFT, 200);
}

void loop() {
 if (myDisplay.displayAnimate()) {
 myDisplay.displayReset();
 }
}

Tutorial Reference