LED cubes have been one of the most popular projects for my students, but we were all ways building them with an attached Arduino UNO attached which can get pricy. This one is based off my 12 LED display and THIS instructable. Total cost is around $10 making this one of my more affordable Arduino projects. If you are making this cube, follow the instructible exercise for building the 3X3X3 stack of LED's and add their libraries to your arduino library folder. For everything else, work off of the attached eagle files. Enjoy!!