I made a CO2 sensing Christmas ball

In plain words

This is a CO2 sensing Christmas ornament that monitors carbon dioxide levels in the air. It's designed for anyone interested in tracking indoor air quality during the holiday season or year-round. The project is open-source and available on GitHub, making it accessible for those who want to build or modify it themselves. The ornament combines festive decoration with practical environmental sensing functionality.

written from the facts on this page · September 2026

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