You can build something cheaper and more customizable with an ESP32 or a Raspberry Pi, and that's what I did. It's beautiful, ...

Abstract: In this paper, the design of an $8 \times 8$ Butler matrix, for fabrication with additive manufacturing, is presented. The use of additive manufacturing offers more design flexibility, with ...

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.