Mike Rankin posts on GitHub a wall charger mount version of a CO2 monitor has been slowly evolving for a while.
It started out as a sensor on a Qwiic (STEMMA QT) connector but was too messy with the two cables. This version uses a make USB-C connector and is design to push onto a wall charger. No cord or cables of any kind required and to upload a new sketch you can plug it into the side of your laptop.
See more on GitHub.
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