I spent a good part of the day trying to figure out why the altitude calculations weren't working, it turned out that the barometer reading was only half as high as it should be. I didn't know this until finally I checked what the pressure was in millibars for my particular altitude, it should have been 1015 mb, it was 560 mb. Maybe it was just a bad block, or maybe I damaged it trying to solder the microscopic vias (which is why I didn't give it a star). In any case, I will get a higher quality altimeter instead of another one.
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