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This is really cool! I've been thinking about a similar idea lately and this seems like a great way of doing it. Do you by chance have any material on how you got the honeywell sensor working with the C.H.I.P. board? (This would be my first electronics project)

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This was my first electronics project as well and I chose the Honeywell sensor because it has decent humidity accuracy (which is what I was mostly interested in) and a bonus temperature sensor built in. It uses the I2C protocol for communication which I found pleasant to work with although it would probably be simpler to just use am analog voltage sensor.

Here's the program I wrote to read the sensor over I2C: https://gist.github.com/tsyd/f48e933a21fb40b9f9eea28118f54e0...

I'll most certainly be checking this out in the near future. Thanks!

I'm currently prototyping an alternate approach - using an nrf52 to send readings beacons, and then gathering those beacons with a raspberry pi

This has the added benefits of being able to be powered with a solar panel.

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