This 5x5x5 LED cube uses a microphone and op-amp to react to sound. It’s run via an Atmega328P with an Arduino bootloader:
ok, it is nothing new and far away from well done.. But its just amazing for me to see it working and i learned quiet a lot :) I just want to share it with you (because normaly i just hang around here, read about your projects/news and get inspired by you).
Via the forum.