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Written by blinry on 2025-02-02 at 11:33

I brought my CO2 sensor prototype to #FOSDEM!

In K.3.401 (a tightly-packed dev room with closed windows), I measured a CO2 concentration of over 3000 ppm.

For reference: Outside air is currently ~420 ppm, and a common suggestion is to ventilate rooms to <= 1000 ppm.

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Written by Stéphane Bortzmeyer on 2025-02-02 at 11:35

@blinry Does it run with purely free software? :-)

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Written by blinry on 2025-02-02 at 11:42

@bortzmeyer Yup, based on esp-rs, and running on a RISC-V microcontroller :) The sensor component itself (from Senseair) might have a proprietary firmware, though.

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Written by federico :debian: on 2025-02-04 at 15:58

@blinry @bortzmeyer ESP32-C3?

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Toot

Written by blinry on 2025-02-04 at 16:03

@federico3 C6! @bortzmeyer

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