If you want to get started, I'll be linking my GitHub repository at the bottom of this article, with code for both the ESP32 and what I used on the Raspberry Pi 1 Model B+.

The display uses four Max 7219 LED matrix displays, so the total resolution is 32 by 8. [Noapparentfunction] came up with an inspired idea: using a glasses case to hold the LED matrices and ...

LEDs continue to dramatically transform signage and lighting. However, often LED displays today are 8×8 and cannot communicate many international alpha-numeric characters. MAXREFDES99# integrates four ...

The algorithm in this microcontroller design drives an LED matrix and provides digital-voltage-readout and bar-like dot displays, showing dots for a graphical output if the input value is changing ...