This project is a 1.8V STM32WB55 Bluetooth Module with battery charging. The purpose of this project is to provide a development platform for mobile wearable devices.
This repository contains the schematic for a USB-powered microphone module designed in KiCad. The circuit is based on the MAX9814 microphone amplifier and PCM2906 USB audio codec.
Module evaluating FFT with programmable gain control, filtering, and parallel/serial communication