1) Please check this thread http://www.arduinoos.com/?page_id=896

2) ” serial windows” ? I do not understand. The value of the fundamental frequency will require the calculation of the estimated peak apex. If you decide for a parabolic fit, you may use this sort of code https://ccrma.stanford.edu/~jos/sasp/Matlab_Parabolic_Peak_Interpolation.html

Regards

Didier

I went through the entire post and found it very intereseting.

I needed a code to compute fft and find the fundamental frequency present in normal condition which is 50Hz due to A/C

I have few doubts so it will be very helpful if you cna solve them:

1)You have used the lib PlainADC.h and PlainFFT.h. I have found the second one but I am not sure if its the same you have used and the library PlainADC.h I couldnt find it.

So it will be very helful if you can email me these libraries on pratik-bhatt@hotmail.com

2) I want just the value of fundamental frequency directly on my serial windows. So how can I do that?

Kindly reply sir, I will be waiting.

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