Need an altimeter to measure heights from 0 m to 5000 m

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jbliria
 
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Joined: Sat Nov 26, 2022 2:37 pm

Need an altimeter to measure heights from 0 m to 5000 m

Post by jbliria »

Hello, I need an altimeter to measure elevations from sea level to 5,000 meters along the banks of a river. The precision I need is + - 0.5m and I can't find any GPS that allows me to achieve that, all the ones I've seen have a margin of error of + - 3 meters at least.

I don't know electronics or programming, I had thought about buying the Adafruit BMP390, but in the discord chat they told me that I can't convert pressure to height directly because it is affected by several factors, and even if I consider temperature, it would not be enough.

Do you know what I can do?

Thank you very much :)

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adafruit_support_carter
 
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Re: Need an altimeter to measure heights from 0 m to 5000 m

Post by adafruit_support_carter »

Checkout this guide which tries to go into some detail about how altitude is computed from pressure:
https://learn.adafruit.com/clue-altimeter

Getting 0.5m accuracy will be tricky, if even possible.

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