This tutorial will guide you through the process of building a tachometer around an Arduino. Tachometers are used to measure rotation rate in Revolutions Per Minute (RPM). You don’t need much… ...

* Why use a 7 band MSGEQ7 graphic equalizer chip when you can get many times more frequency bins with software alone and on an Arduino UNO to boot? * This example combines high speed A/D conversion, ...

The FFT.h file contains the functions defined in Robin Scheibler's library, adapted to Arduino. The FFT_signal.h contains the signal related variables and the actual signal. Just replace the FFT_N ...

If you’ve ever wanted to make your own VU meter but were scared off by the signal process you need to study this tutorial. Hackaday Alum [Phil Burgess] developed the device using an RGB LED m… ...