M5StickC_AudioVisLed

Audio visualization based on an M5StickC (ESP32):

Sampling of audio data from built-in microphone using i2s (44100 Hz sample rate)
Transformation of sampled data into the frequency domain using arduinoFFT (2048 samples FFT, 21.5 Hz frequency resolution)
Visualization of 20 frequency bands and beat detection using an RGB LED strip with 72 LEDs (configurable)

Getting Started

Development environment

Visual Studio Code (version 1.59.0)
PlatformIO IDE for VSCode

System

Device: M5StickC
Platform: espressif32
Board: m5stick-c
Framework: arduino

Peripherals

RGB LED strip

Libraries used

M5StickC
arduinoFFT (develop branch)
FastLED

Project Description

A comprehensive description of this project is available at hackster.io.

License

See the LICENSE file for details.

Copyright 2021 © Ernst Sikora