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# ESP32_FFT_VU
A spectrum analyzer VU meter running a 40kHz FFT on an ESP32 and outputting to a 16 x 16 FastLED matrix. The code is heavily modified from [this example](https://github.com/G6EJD/ESP32-8266-Audio-Spectrum-Display/blob/master/ESP32_Spectrum_Display_02.ino) originally written by G6EJD who has a very useful [YouTube channel](https://www.youtube.com/user/G6EJD/videos), so check him out.
## Neomatrix compatibility
If you're inerested in running this using Neomatrix for easier adjustment to different matrix setups, [VonHirsch](https://github.com/VonHirsch/ESP32_FFT_VU/tree/FastLED_NeoMatrix) has a fork that you might be interested in.
## Demo
If you are planning on using this code, it is advisable to watch the YouTube video below explaining how it works. Please note, the code has changed to use FastLED Neomatrix since the video was produced thanks to [VonHirsch](https://github.com/VonHirsch/). See 'Installation and code usage' below.