Bluetooth Controlled 8×8 LED MAX7219 Matrix using Android Phone.


This project is about moving LED matrix display. In this project we will use MAX7219 8×8 LED module for display, Arduino UNO for brain and Bluetooth serial  module for communication. You will need an Android phone for controlling this display.

Things you will need: 

  1. Arduino UNO.
  2. MAX7219 LED modules – 3Nos.   (You can add many of these for increasing length of display)
  3. HC-05 Serial Bluetooth Module.      (You can use any other similar serial Bluetooth module instead )
  4. Android Phone.


Circuit Diagram:

Circuit Diagram

wiring diagram


Code :



Steps :

  1. Connect MAX7219 LED modules with each other as shown in above wiring diagram.
  2. Connect led modules data pins to arduino data pins and connect source power as shown in circuit diagram.
  3. Now connect HC-05 serial module to RX TX pins of Arduino. Arduino RX to HC-05 TX and arduino TX to HC-05 RX.
  4. Download code into arduino using Arduino IDE.
  5. Download android application from download section and install it in your phone .
  6. Now you can connect your phone with this display using provided application to control matrix display.

Downloads :

  1. Android appliation
  2. MAX7219 Datasheet
  3. MaxMatrix.h

Check this WiFi controlled MAX7219 LED Matrix using ESP-12 NodeMCU module


  • amirul hariz

    (October 11, 2018 - 5:30 pm)

    sir, I am want to ask why the Bluetooth is connected but it cant change the scrolling text

    • psadminetechpath

      (October 11, 2018 - 9:39 pm)

      What do you mean by scrolling text, can you elaborate?

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