Skip to content

Home

Jump to bottom
Pascal Roobrouck edited this page Jun 7, 2018 · 7 revisions

This is a C++ class to support driving LED dot-matrix displays based on the Max7221 driver IC.

The Max7221 supports driving up to 8x8 LEDs and popular uses are driving (up to) 8 seven-segment LED-displays, or an 8x8 dot-matrix LED display.

8x8 Dot-Matrix-LED - Front 8x8 Dot-Matrix-LED - Back

The Max7221 has an SPI Interface. This allows to 'daisy-chain' several devices together, constructing larger displays. This is useful to construct larger dot-matrix displays.

Clone this wiki locally