Microphone board
This project contains open hardware design files for a microphone board with an SPH0644LM4H-1 PDM microphone. The board break-routes PDM signals from the microphone to a zero insertion force connector. Additionally, the board provides voltage filtering and ESD protection.
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Microphone board
Copyright (c) 2024-2025 Antmicro
Overview
This project contains open hardware design files for a microphone board with an SPH0644LM4H-1 PDM microphone. The board break-routes PDM signals from the microphone to a zero insertion force connector. Additionally, the board provides voltage filtering and ESD protection.
The design files were prepared in KiCad 8.x.
Key features
- Knowles SPH0644LM4H-1
- Zero insertion force connector for a 5 pin, 0.5 mm pitch FFC
- Selectable Left or Right channel audio transmitting
- Designed to fit an 11mm diameter opening
- Alignment cutouts for toolless mounting
Project structure
The main directory contains KiCad PCB project files, a LICENSE, and a README. The remaining files are stored in the following directories:
doc- contains schematics in PDF formatassets- contains visual assets for showcasing this design on Open Hardware Portal and System Designer
Licensing
This project is published under the Apache-2.0 license.
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