Insane Hydraulics

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Project Super Pressure Gauge - GitHub Repository

This little KiCad project turned out so neat that I cleaned it up and uploaded it to this public GitHub repository, in case anyone wants to put this layout to good use.

The production files, along with the Bill of Materials with LCSC part numbers are included - so you can pretty much order these boards directly from a fab house of your choosing. The project was created with KiCad 7.0. I tested it with a fresh install of the latest version (9.0 at the time of this writing) and it opens error-free.

To recap, the purpose of this project was to create a simple, two-sided circular board for the AD7195 analog-to-digital converter and the respective AC bridge driver. The layout secures adequate shielding for the analog side and exposes all connections on the component-free side, allowing the board to be mounted in a round housing above the pressure transducer. Obviously, it can be used with any Wheatstone Bridge cell.