Some MD0657C2-R LED dot matrix displays for not a lot needed a project. The displays are mounted in groups of four on small PCBs, driven by a MAX6952, which are then controlled by a Pi Pico.

A low-cost, high performance solution for single LED control in a matrix LED configuration is presented in this paper. The integrated solutions on the chip market are evaluated and an improved ...

Tobers Multidisplay turns your LED-Matrix display into a widely configurable and customizable message center. For ESP8266 or ESP32 and MAX7219 8x8 LED matrix modules.