How we work with AI and JLCPCB.
The parts catalogue, the scripts we wrote, and how a schematic goes from a text file to something we can actually inspect.
Design and test notes
How HydroGuard is taking shape.
Our designs, tests and tools as we go from the first board to an armband.
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Adapting the app to the second prototype.
The app now knows about the new board, and preparing it showed three things the firmware cannot report yet.
What we changed for the second prototype.
A smaller controller, lower power use, motion sensing and a humidity sensor under the band.
Testing the first prototype.
How we checked the measurement circuit on the bench and what happened when we tried it on a person.
Why the first board is large.
Four electrodes, room for a probe on every net, and what it cost to have the board built.