Blog series on building an air sensor with Arduino

Re:Blog series on building an air sensor with Arduino by fnands on Monday January 02, 2023 @05:51AM (#34216535)

Any recommendation for CO2 sensors?

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Re:Blog series on building an air sensor with Arduino by ondori on Monday January 02, 2023 @07:05AM (#34217045)

scd30 does the trick

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Re:Blog series on building an air sensor with Arduino by moloch-hai on Monday January 02, 2023 @09:21AM (#34218100)

The main thing you need to know about a CO2 sensor is that you also need a pressure sensor for its readings to mean anything.

Expect to pay ~$50 for an actual CO2 sensor. The cheap "organic gas" VOC sensors don't qualify. But you probably should add on one of those anyway.

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Re:Blog series on building an air sensor with Arduino by roger_ on Monday January 02, 2023 @10:03AM (#34218601)

Also the need for periodic outdoor calibration.

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Re:Blog series on building an air sensor with Arduino by MertsA on Monday January 02, 2023 @11:15AM (#34219564)

The grandparent ships out the SenseAir S8 for CO2 so presumably they're still happy with it. I have no complaints myself but I haven't compared it to any reference standard. He's the founder behind AirGradient. https://www.airgradient.com/open-airgradient/ They have a DIY version that's an open source design and you can either source components yourself or just skip trying to track down everything on the BOM and buy a kit from them that comes with a sleek injection molded housing as well.

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