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   Chris Adams (mrchrisadams@mastodon.social)'s status on Thursday, 02-Jan-2025 16:46:27 JST Chris Adams

   I posted about air quality / indoor CO2 in rooms yesterday in #FOSDEM, and this project here appears to set up a fairly accurate in-room CO2 sensor (a SCD4x one) with a tiny ESP32 minicomputer.

   The box can join wifi, and then expose the live CO2 values for scraping via Prometheus/Grafana, a well known monitoring/observability stack.

   It even includes a 3D model for 3D printing the box, and sample code and links to buy the kit, for 30-40 EUR total.

   Not bad!
   https://tech.lgbt/@alxndr/112051071094122231

   • Nemo_bis 🌈 repeated this.
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     will-h (flangey@chaos.social)'s status on Thursday, 02-Jan-2025 16:46:27 JST will-h

     in reply to

     @mrchrisadams Eventinfra also has a bunch, usually plugged into the USB port of Aruba wireless APs. We've been graphing CO2 at CCC Congress in recent years.

     We had some false positives at EMF2022 though due to smoke machines... Probably not an issue at FOSDEM :)