Arduino Spectrum Analyizer

Arduino Spectrum Analyzer

In this video we use the Fix_FFT library to apply a Forier Transform(A fast Fourier transform (FFT) algorithm computes the discrete Fourier transform (DFT) of a sequence, or its inverse. Fourier analysis converts a signal from its original domain (often time or space) to a representation in the frequency domain and vice versa.) to an audio signal.
The signal is aquired through a microphone and is viewed in the frequency domain on an OLED screen.

Microphone with adjustable gain: http://amzn.to/2paUZZc

OLED with I2C Interface: http://amzn.to/2qec9Uf

All of my sketches are available here: https://www.dropbox.com/sh/m6c40pu99fqxb5b/AAD1Gzn6F4Hy8v9RrTZSxQyHa?dl=0

Yes I know I spelled analyzer wrong in the code and title, it's a joke.

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Please watch: "Diodes: The basic building block of all digital circuits"
https://www.youtube.com/watch?v=Lyii5I30gw0
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Видео Arduino Spectrum Analyizer канала learnelectronics