The matrix that we’re planning to use during this project may be an 8×8 matrix which implies that it’s eight columns and eight rows, therefore it contains a complete of sixty-four LEDs. The MAX7219 chip makes it easier to regulate the matrix by victimization simply three digital pins of the Arduino board.
Here’s a simple sketch that displays three types of faces: a sad face, a neutral face, and a happy face. Upload the following code to your board:
View code on GitHub