AirGradient Forum

Apparently dropping Airgradient ONE from your desk has consequences, who knew? xD

#1

Well, while getting up from bed and grabbing my phone, the Airgradient ONE fell from my desk. Everything looks ok, except for the CO2 concentration afterwards rapidly increasing to 10.000 PPM. If that were true, I suspect I wouldn’t be conscious right now. It provides this value both on its own LCD screen and through my Home Assistant integration.

What do you guess happened and can make such a high fixed value occur? If the sensor came loose or something during the fall, I would expect a extremely low value, zero or NaN, not such a high value. Or is the CO2 sensor likely a goner? I’ve unplugged the Airgradient ONE and plugged it back in, no change. Also, no visible dust build-up. It is fully up-to-date with the latest firmware. Any advice on possibly fixing this situation?

#2

The sensors are sensitive to motion that can impact the calibration. So hopefully the self-calibration procedure will get it back to reasonable numbers.

But I can’t figure out how to do it in the Dashboard at this time. I see the column to see if it was requested, but not how to initiate it. Still working on it, but wanted to let you know that there may be hope.

#3

Manual calibration is found by going to Hardware → Actions Menu for the Device → next through to the CO2 step and then there’s the “Request CO2 Calibration” button. That’s the only one, AFAIK, that you can do a manual calibration on.

Also FWIW, I’ve had no success getting that to ever work. I know the device gets the message (via its logs), but I’ve never gotten the CO2 values to appear to reset to 400 (when placed in an open window for an hour before and after requesting calibration).

#4

Ok, so on the Hardware page, click on the three dots under the Action column and select Advanced Settings.
image

On the 4th page under CO2 you can click to “Request CO2 Calibration”
image

I hadn’t been going to the other pages under Advanced Settings. Thank you @washley

You might try doing the request twice after giving it 3-5 minutes. I move my monitors completely outside, let them sit for 5 minutes to stabilize, then request the calibration and give it at least another 5 minutes for it to do the calibration and write it to memory. I’ve seen mine go to 400 when it does work, but I think at least once I did it twice just to make sure.

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