{"id":21666852,"url":"https://github.com/debsahu/esp32_fft_audio_leds","last_synced_at":"2025-10-06T21:36:52.212Z","repository":{"id":140208084,"uuid":"173824845","full_name":"debsahu/ESP32_FFT_Audio_LEDs","owner":"debsahu","description":"FFT on ESP32 and using MSGEQ7 to process audio 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ESP32 Fast Fourier Transform of Audio \u0026 WS2812B mapping\n\n[![License: MIT](https://img.shields.io/github/license/debsahu/ESP32_FFT_Audio_LEDs.svg)](https://opensource.org/licenses/MIT) [![LastCommit](https://img.shields.io/github/last-commit/debsahu/ESP32_FFT_Audio_LEDs.svg?style=social)](https://github.com/debsahu/ESP32_FFT_Audio_LEDs/commits/master)\n\nHere we use ESP32 microcontroller to analyze real-time audio signals\n- Real-time FFT to get frequencies (99% of code from [ESP32-8266-Audio-Spectrum-Display Project](https://github.com/G6EJD/ESP32-8266-Audio-Spectrum-Display) by [**@G6EJD**](https://github.com/G6EJD))\n- Or use MSGEQ7 chip to get the same data\n- Display frequency bands on LEDs as bars\n\n[![ESP32_FFT_AUDIO_LEDs](https://img.youtube.com/vi/8YaeUYZ_Ex8/0.jpg)](https://www.youtube.com/watch?v=8YaeUYZ_Ex8)\n\n## Libraries Needed\n\n[Software FFT platformio.ini](https://github.com/debsahu/ESP32_FFT_Audio_LEDs/blob/master/microphone_esp8266_fft/platformio.ini) and [Hardware FFT platformio.ini](https://github.com/debsahu/ESP32_FFT_Audio_LEDs/blob/master/microphone_esp8266_msgeq7/platformio.ini) is included, use [PlatformIO](https://platformio.org/platformio-ide) and it will take care of installing the following libraries.\n\n| Library                   | Link                                                       |\n|---------------------------|------------------------------------------------------------|\n|arduinoFFT                 |https://github.com/kosme/arduinoFFT                         |\n|WS2812FX                   |https://github.com/kitesurfer1404/WS2812FX                  |\n|MD_MSGEQ7                  |https://github.com/debsahu/MD_MSGEQ7                        |\n\n## Known Limitations\n\n- Sampling frequency must be high\n- Sampling time should not interfere with other WiFi functions\n- FFT calculations are CPU intensive\n- Frequency binning needs to be done manually\n\n## Wiring\n\n![ww_wiring](https://github.com/debsahu/ESP32_FFT_Audio_LEDs/blob/master/docs/software_fft.png)\n\n![hw_wiring](https://github.com/debsahu/ESP32_FFT_Audio_LEDs/blob/master/docs/hardware_fft.png)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdebsahu%2Fesp32_fft_audio_leds","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fdebsahu%2Fesp32_fft_audio_leds","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdebsahu%2Fesp32_fft_audio_leds/lists"}