> All-in-all quite a disappointing session IMHO the worse I attended at 37c3, nothing compared to the excellent https://events.ccc.de/congress/2023/hub/event/numerical_air_... that was running at the same time.

Yeah, was there for this one, can highly recommend. Will also be building my own DIY air quality sensor to add to their network.

Which network are you considering for your DIY air quality sensor? They mention on a slide:

- https://sensor.community/

- https://luftdaten.at/

- https://openair.cologne/

Since I'm neither in Austria nor Cologne, I'd go with https://sensor.community

That session on air quality wasn’t bad, but just didn’t fit my needs in the moment. Glad you liked it so much.