21 Bands Audio Spectrum Analyzer - Micro

21 Band Audio Spectrum Analyzer in a Miniature PCB design form factor with full functionality for Bluetooth and Audio Amp. SMD footprints for MSGEQ7 and Si3531. Board size is 60cm x 39.4cm. The 420 RGB leds are now being powered using the USB-C or from one of the LED terminal blocks using 5V. Waveshare ESP32-S3 Zero 18 pin Dev board has enough GPIOs to make this project work .. For a while the FastLED library was not available for this board, but version 3.9.11 seems to work . The design was tested on breadboard and 5 boards were ordered and built.

ESP32 Board Library *** MUST USE *** version 3.0.5 for ESP32-S3-Zero to work properly

To view the project visit my Youtube page: Smallest 21 band Spectrum analyzer possible using the ESP32-S3 Zero - YouTube or here for battery operated clip.
Ko-Fi Store: https://ko-fi.com/danmicu

I also make my own 20 x 21 LED Matrix display Panels (see attachments).