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Device sends %CO2% instead of the actual value
I've been trying it on various supplies too and getting mixed results.

Off my Toshiba laptop: works fine - no problems noted. I think the same with my Asus netbook but I'll re-test that at some point.

Off a quite old Staples four-port powered hub on its own mains supply: sometimes works with intermittent %CO2% as per my previous post on page 1 of this thread.

Off a 5000 mAh USB “power bank” bought in Lidl yesterday: doesn't work at all, I assume because the power bank shuts down if you draw less than 80 mA.

Off the Lidl power bank via the Staples hub: stops after a while. E.g., tried to record CO₂ in the bedroom last night and it just stopped at 00:37 after running for about an hour or so. Power bank still had plenty of power left and was still on with a red LED on the hub lit. Occasional %CO2%, etc.

Off a USB wall-wart originally for a Tesco Hudl Android tablet: seems to work fine with just one %CO2% reading in a few hours testing though also with a rather odd drop in CO₂ over two readings:

2016-10-04T19:36:36 /?temp=23.18&hum=53.65&co2=1047.00
2016-10-04T19:37:38 /?temp=23.22&hum=53.64&co2=535.00
2016-10-04T19:38:40 /?temp=23.26&hum=53.60&co2=533.50
2016-10-04T19:39:43 /?temp=23.31&hum=53.56&co2=1065.50

Might have been a waft of fresh air as I went out to make dinner or something but rather strange.

I did update the firmware this morning so I'll retest with the Staples hub with the various power sources later. Still, it does seem to be sensitive to the supply in use in some way.

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RE: Device sends %CO2% instead of the actual value - by Ed Davies - 10-04-2016, 07:38 PM

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