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Hello, I did everything and have check everything (Hope so), It kind of works, but making a lot of noise. Because of the noise it's very hard to see the real visualizer. Have you got any clue who could be making that noise? it's not MSGEQ7 (tried 30 of them (10 from sparkfun )), can't be PCB where ardruino are because I re-soldered that pcb 3times, any information will be very helpful. After all it's very interesting and good project .