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Understanding MPL3115A2 Readings
Moderators: adafruit_support_bill, adafruit

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Re: Understanding MPL3115A2 Readings

by adafruit_support_bill on Sun Apr 28, 2019 1:46 pm

But, as the local pressure changes, do I not need to track that and update Bar_In so the calculated altitude will remain accurate?

If you want to calculate altitude from pressure, you need to start with the sea-level corrected value from the local weather service.

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Re: Understanding MPL3115A2 Readings

by teranz on Sun Apr 28, 2019 2:43 pm

Thanks Bill, you`ve greatly helped with my understanding the pressure/altitude readings! It is more complicated than I anticipated when I started but I`m really glad I`ve spent the time to understand it better.

Tom

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Please be positive and constructive with your questions and comments.