I’ve been considering designing a wearable that monitors CO2 and PM2.5 continuously, but I’m unsure if people would wear it in conjunction with an Apple Watch or similar.
This is super interesting for me - but I'd love to put it on a bicycle (they are often locked up and stationary - for example) but move at faster speeds. Maybe this means they are only useful at tracking information when locked/stationary?
I really like the idea of using cheap (?) devices in a sort of mesh to feed back telemetry data on pollution. Pollution is everyone's concern, so visualising that would be cool.
Interested to hear if you had any more thoughts on this!
Once had this thing on a balcony of a shared flat in Heilbronn, Germany. Wondered what that was, previous tenant told me about it and it was never removed from there.
Note that NDIR sensors use a surprising amount of power, since they're based around an incandescent bulb shining light through the sample volume. A CO2 wearable will need to be recharged once a day, like a smart watch.
I'm not sure how accurate that would be on your wrist, because the proportion of recently exhaled air would be so much higher, since it's only a foot or two from your mouth.
CO2 monitors often have little silent fans to draw in fresh air as well, for accuracy.
