Weather Shield Hookup Guide
This Tutorial is Retired!
This tutorial covers concepts or technologies that are no longer current. It's still here for you to read and enjoy, but may not be as useful as our newest tutorials.
View the updated tutorial: Arduino Weather Shield Hookup Guide V12
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Resources and Going Further
The Weather Shield example firmware outputs regular barometric pressure. This is very different from the pressure that weather stations report. For more information, see the definition of "altimeter setting pressure". For an example of how to calculate altimeter setting type barometric pressure see the MPL3115A2 hook-up guide. Also checkout the MPL3115A2 library, specifically the BarometricHgInch example.
Datasheets
There's a lot of technology on this shield. Here's the datasheets in case you need to reference them:
Additional resources and projects to checkout:
- HTU21D Humidity Repo and Library
- MPL3115A2 Pressure Repo and Library
- If you're interested in using GPS with Arduino definitely checkout Mikal Hart's TinyGPS++ library
- Consider adding an OpenLog for datalogging the weather readings over time
- Electric Imp is a good way to add WiFi to get a truly wireless weather station