[metaphor]

I can see how your prototype defends against corrosion, not so much this b-parasite toy.

What I don't see anyone talking about is the impact of dielectric moisture absorption[1], which is typically around 0.3-0.5% over 24 hours exposure for cheaper FR-4 on the market, let alone how this product intends to maintain sensor calibration over time.

I'd expect to see external corrosion impact at the solder joints first, especially around the battery terminals, but corrosion creep may happen alot sooner than that: vias in the b-parasite prototype are clearly tented[2], but that masking is superficial and won't protect against hygroscopic exposure from the inside; being open source certainly doesn't preclude hobbyists from making even worse material decisions either.

[1] https://www.ipc.org/sites/default/files/test_methods_docs/2....

[2] https://github.com/rbaron/b-parasite/blob/main/img/resized/i...