KiCad boards from 2 GitHub repositories tagged “mems-microphone”, the most starred first; open any of them in PCBKit.
ccc909/Whistler
Open-source 16-channel USB MEMS microphone array: KiCad PCB design, XMOS XU316 (xcore.ai) USB Audio Class 2 firmware with DFU, BOM and JLCPCB-ready production files. CERN-OHL-S.
OscarBazylewich/STM32_Audio_Spectrum_Analyzer_CustomPCB
This repository contains a 4-layer KiCad board for the STM32 Audio Spectrum Analyzer. The board has an STM32L4Q5CGT6 MCU and an I2S MEMS microphone (ICS-43434).
ccc909/Whistler
Open-source 16-channel USB MEMS microphone array: KiCad PCB design, XMOS XU316 (xcore.ai) USB Audio Class 2 firmware with DFU, BOM and JLCPCB-ready production files. CERN-OHL-S.