A set of four MAX7219 chips control the entire 256-pixel matrix with just three pins on the Arduino. The resolution of the display allows the Arduino Audio Meter to show more than just a simple VU ...

But you’ve got to crawl before you can walk so he decided to see what he could do with the MAX7219 LED driver chips ... a breadboard and drove it with an Arduino. We hope to hear back from ...

MAXREFDES99# integrates four MAX7219 LED drivers to ... multiple LEDs in matrix or numeric display form. For fast prototyping, software code developed for the MAXREFDES99# reference design works with ...