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Föderation EN Mi 06.03.2024 23:20:58 How to build a headless CO2 sensor that is cheap and accurate: https://codeberg.org/alxndr42/co2-sensor Grafana and HTML dashboards included.
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Föderation NL Sa 13.04.2024 16:28:23 @alxndr @vosje62 Iets voor jou, @robvandegoor? |
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Föderation NL Sa 13.04.2024 16:29:49 @heesdaman @alxndr @vosje62 Ik ga eens kijken. 😋 |
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Föderation EN Di 31.12.2024 16:11:47 @alxndr does the Sensirion sensor really measure CO2? Usually the cheaper ones measure something and estimate CO2 |
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Föderation EN Di 31.12.2024 16:25:41 @wtremmel It does, here's the data sheet: https://sensirion.com/media/documents/48C4B7FB/66E05452/CD_DS_SCD4x_Datasheet_D1.pdf I also own an Aranet4, and in my comparison, the SCD40 was usually within 50 ppm of the Aranet4. Definitely accurate enough to help breathing humans with their risk assessment. |
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Föderation EN Di 31.12.2024 17:52:00 @alxndr Ahoy, thank you for sharing this! Can I check I understand what's going on here? Once flashed, this little box basically sets up the sensor to expose values using a Prometheus exporter, to allow another machine on the same wifi network to scrape regularly, and then chart in Grafana. It's a bit like how might you monitor a set of virtual machines in a web application, right? |
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Föderation EN Di 31.12.2024 18:39:43 @alxndr Gave this a boost, as I've been looking for a project like this myself and really liked the way you documented everything in the README. Wishing you a happy new year and sending my thanks for publishing this! ~n |
