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wsular / urbanova-aqnet-rpi-node-school

This repository contains code and notes related to the sensor packages developed for WSU Urbanova Air Quality Network (aqnet). This particular repository is for sensors that are used as part of the Ramboll project at schools in the Spokane School District.
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Sea level pressure? #5

Closed vonw closed 5 years ago

vonw commented 5 years ago

Do we need to set the sea level pressure for the BME280 sensor? What happens if we don't?

matthewRoetcisoender commented 5 years ago

I'll check!

vonw commented 5 years ago

Thanks!

matthewRoetcisoender commented 5 years ago

Screen Shot 2019-07-16 at 10 58 46 AM

Based on above, it looks like setting the sea level pressure would just be needed if wanting to calculate altitude above the ground? But it looks like the sensor reads the surrounding pressure as is.

vonw commented 5 years ago

That makes sense. I've just added the word "approximate" to your comment. And I'll add another comment that states that this is needed for computing altitude. Sound OK?

matthewRoetcisoender commented 5 years ago

Yup!