Scrolling text on 8x8 matrices controlled from an Android phone.

After several attempts to make a scrolling text on the 8x8 matrix, I found the most complete manual on the Embedded Lab page :

The device contains an Arduino nano, Bluetooth module for receiving data from the smartphone and 8x8 LED matrices driven by MAX7219.

Unlike there, I used ready-made 8x8 matrix modules with MAX7219 chip that can be purchase very cheap on Ebay or Alexpress. At the moment, I only had 7 modules, so I made a small modification of the code. An android application does not exist anymore on Google Play store, so you can download it from :

. It can control the speed of the scrolling, brightness of leds, pause, erase text, and several predefined text buttons.

In the end, I put the whole device in a box, which I made from a PVC material that I put on it with a black wallpaper.”


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