ooo cool! I've been wanting to take one of my little homemade raspberry pi weather stations to measure the air quality and CO2 on my commute into London. Need to get a USB battery for it 😀 I imagine the CO2 levels on the underground are elevated.
@Charlotte I got an Aranet 4 since a number of people have had good experiences with them. Battery life is supposed to be pretty good as the display is eink.
My ideal would be a wearable thing that did the measuring and sending to a phone, possibly a pendant that changed colour according to the reading? Challenge is probably power miniaturisation
@sparrowsion I think any NDIR CO₂ meter inherently has to measure temperature/humidity/pressure as part of making sense of the IR measurement; but yes I've found the Aranet4's logging of non-CO₂ handy. (Without the phone app; there's good-enough open source code to get at the log.)
Alexandra Lanes
in reply to Alexandra Lanes • •705ppm CO2
Alexandra Lanes
in reply to Alexandra Lanes • •Charlotte
in reply to Alexandra Lanes • • •Alexandra Lanes likes this.
Alexandra Lanes
in reply to Charlotte • •@Charlotte I got an Aranet 4 since a number of people have had good experiences with them. Battery life is supposed to be pretty good as the display is eink.
My ideal would be a wearable thing that did the measuring and sending to a phone, possibly a pendant that changed colour according to the reading? Challenge is probably power miniaturisation
Alexandra Lanes
Unknown parent • •WOMUMP
Unknown parent • • •Alexandra Lanes likes this.