[memoguereque]

@Michael wrote:

No, that wouldn’t free up any pins. Pins 13, 12, 11, 10 are still the SPI bus.

Hello Michael. Are this the only pins used for communication between the shield and the Arduino uno? I read somewhere that it uses 5 through 13. Is there a pinout available?

Thank you very much!

[memoguereque]

Thank you very much Michael,

I will get my hands on to that!

Another question: Is it possible to use 3 analog pins for other purposes ( i want to connect a 3 axis accelerometer) or does the chip uses all of the analog pins to sample audio?

Thanks

[memoguereque]

Thank you very much for your reply, Michael.

Yes. It actually works. The thing is ( and at this point i don’t really know if I understood the full concept of FFT) for what i understand, a 250 point FFT means 128 bands of frequencies due to the nyquist theorem, right?

Because of the high noise level on the project and some other factors i came to the conclusion of using a 512 or even a 1024 point FFT and see the results, plus recording the noise for future references.

I was thinking of audio hacker to record samples and analyze the sound in FFT. Is it possible with arduino and audiohacker to do that?

Thank you.

[Author]

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