A project to control a high number of LEDs using basic microcontrollers and simple electronics components.
The project uses the Arduino board, one 74238 decoder, and eight 74574 flip-flops to control up to sixty four leds using twelve pins of the arduino board.
It was based on the work on https://www.instructables.com/Led-Cube-8x8x8/. So many thanks to chr for sharing his work.