Something may be interrupting the internal communications between the processes.
What device do you use for aq?
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A USB device that plugs into the RPI. It works great. I have it sending data every 10 seconds. I may cut that down to 30 seconds.
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I always wonder what they really measure … VOC is so general .
the sensors full tech specs
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Are you thinking of adding this to ArchiveSW?
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Yes. I will be creating a table to capture the data and I will be adding it to the display as soon as I figure out how to display the data.
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Nice, I ordered 2 just now. (1 for ArchiveSW and 1 to play with)
Let me know if you need a tester.
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Well, now, I guess I better get the table designed and import code written. This is a pretty simple change but will require some configuration.
If you have any ideas on how to display the data let me know.
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only problem in my case, the device running your script is in the cellar … I think you can only capture via USB the data so measuring what happens down there is not really going to give me much. 
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unfortunately eric as you discovered this doesnt measure particle matters , whilst a useful tool for detecting gases we have two gas sensor using that chip which is just a white plastic box with two led and a buzzer . gary you might want to look for a solution measuring particle matters as well as VOC . there is a lot interest in measuring pm2.5/10 and VOC amongst other concerns . ive seen a few rasperry and other small projects offering a wider range of detecting concerns .
one project caught my eye some months ago https://www.instructables.com/id/See-the-Air-Your-Community-Breathes/
anyway i think its an interesting addition to owning a weather station and certainly has become a popular interest over the last year or so. good luck…brian
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There are ways to solve that. Use a long USB cable or use additional boards to relay the data. The possibilities are vast and readily available.
I added this device at the request of a user. If you have a device you want, I’ll be happy to add it. You can even build your own device and I’ll add support for it.
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I frequent THIS site
Also there are devices hitting the market like THIS one.
They also allow data uploads via API - ? Not sure if the device being considered provides the data capture is compatible. ?
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exactly what i use think @dsj had one but he lost it somewhere in china. highly recommend one of these if your the conscientious type of having things look tidy and modern…
It seems a nice device BUT it seems to be 100% cloud based so that is NOT an option.
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I agree totally, I was just providing the FYI as to where things seem to be trending.
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I’m not committed to using the uThing::VOC sensor in ArchiveSW. I can use it in other projects. If there is a better one, I’ll get it. I do have some interest in measuring pm2.5/10 so if there are suggestions, I’ll look into them.
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Most of the projects I seen for pm2.5/10 use the SDS011 sensor but couldn’t find any offered in the US. You can find them on Aliexpress for under $20 shipped that include the USB interface. A couple I seen are
and
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Principal an interesting device,
but cloud based and, for my opinion, to expensive for the features.
How dot they get the outdoor values ?
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I like your ideas so keep me informed on things you like.