For the folk who were interested in #Tildagon #CO2 monitoring #Hexpansion, here' s a very hacky first stab at #Oxygon, a Tildagon app to talk to the #SCD41 sensor for high accuracy CO2 monitoring: https://codeberg.org/martin_hamilton/tildagon-oxygon

This is in the Tildagon app store as https://apps.badge.emfcamp.org/apps/00441330/, but requires a breakout hexpansion as per the README.

NB still need to add calibration mode, but it's a start! Some further ideas in the README - PRs welcome  

I quite like the idea of logging CO2 by GPS (or wifi?) geolocation, perhaps over the network, and displayed on a/the #EMFCamp map. Crowdsourced #Datenzwerg could happen 

Now to hit the #Kicad and see if I can figure out how to design an all-in-one PCB. Or perhaps a PCB that can easily be mated with the common CO2 sensor boards, the same way the Tildagon screen attaches to the front plate?

PS An actual IR transmitter / receiver #hexpansion was created over two years ago... #TrainingData  

https://github.com/ArcaneNibble/hexpansion-ir-tool