What are your favorite (and affordable) gas sensors?
I'm interested in proper CO2 concentration measurement, but also, generally curious to quantify the invisible
I hooked up 2 of the MH-Z14 NDIR sensors and they not only provide unrealistically high values (2500 ppm CO2 in a well ventilated area), they don't even agree despite being placed next to each other.
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@uint8_t I think the goto is MH-Z19B, some info on https://revspace.nl/MH-Z19B
That sensor (and possibly others) need like 24hrs to get a proper baseline to calibrate to, it'll set the lowest detected value as 400 ppm
@f0x I should hang them out the window and let them be for a day