Hey dudes,
I want to assembly an 8³ cube. The soldering isn't the problem but the mikrocontrolerboard is. I want to use an Arduino to controll it. do you know any good PCB for my Project?
It probably is possible to make one with any arduino, at http://arduino.cc/en/Main/Products you can find the different models.
Most popular and most supported chip used in an arduino is the atmega328p. An Uno or Nano are nice boards in that respect since they already have an USB-connection, but you could use other 328-models as well. With a bit of luck you probably can find examples for 8x8x8-cubes using the atmega328-controller. Support for the MEGA2560 (more memory, more pins) is great as well.
There are also newer models using an atmega32u4, a lot of people are starting to use them, but those may still require a bit more research.
Since Arduino is open source tons and tons of clones exist and you could make one yourself as well.
An 8x8x8 cube will most likely need extra hardware besides leds and arduino, have you found/designed a schematic for that ?