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21-Bands Audio Spectrum Analyzer
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 15 boards were ordered and built by JLCPCB.
21-Bands Audio Spectrum Analyzer
Project images are for reference only. Actual production is based on the manufacturing files on the project page.
Please review the designer's notes (e.g., PCB thickness) and select the appropriate options.
PCBWay is not responsible
for issues caused by unsuitable parameter selections.
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