I'm so noob in arduino. Now I have a PCB of finished for 8X8X8 CUBE , I want a model to audio input by using mic. The arduino can use the audio signal change the 3D cube graphic like a VU meter. I only know that the CUBE is controlled by the arduino RX TX. So which type of arduino should I use? I don't know which audio model should I buy. I also have searched a topic about the FFT changing into AVR. It's a GCC lib.
Thank you for any suggestion!