“This instructable shows how to control an array of 8x8 LED matrices using an Arduino Uno. This guide might be used to create a simple (and relatively cheap display) for your own projects. This way you might display letters, numbers or custom animations.
A 5 matrices array used in one of our robot projects (“Rob da Alegria”) is used as an example to ilustrate this technology. You might found more about this project in the following links:https://hackaday.io/project/12873-rob-da-alegria-joy-robot
https://github.com/ferauche/RoboAlegria
https://www.facebook.com/robodaalegria/Special thanks to the other team members involved in the above mentioned project, responsible for the first version of the code presented in this tutorial: Thiago Farauche Diego Augustus Yhan Christian.”