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A comment on Blog series on building an air sensor with Arduino. Parent comment

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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