The matrix that weโ€™re planning to use during this project may be an 8ร—8 matrix which implies that itโ€™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.

Parts Required

For this guide youโ€™ll need the following parts:

  • 1x 8ร—8 Dot Matrix with MAX7219
  • Arduino UNO โ€“ read Best Arduino Starter Kits
  • Jumper wires

Arduino Code

Hereโ€™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

Schematics Circuit