The LED cube is made up from 64 LED's arranged into 4 layers of 16 LED's each. The display itself is multiplexed so instead of requiring 64 connections it requires one to each of the four layers and 16 to each LED in a layer making a total of 20. The cube is refreshed by a software interrupt routine with each layer active for 2 ms so the entire cube is refreshed every 10mS (100Hz). This results in a display with no visible flicker.
.jpg)
LED Cube frame
.jpg)
