<![CDATA[Units CO2/TVOC]]>Hi,
I'm trying the Units CO2/TVOC M5Stack Sick C.

I'm just copy/pasting the code from the demo https://docs.m5stack.com/#/en/unit/tvoc
And
eCO2 stays blocked = 400ppm
TVOC stay bloced at 0
H2 moving a bit around 13580

Any idea ?
Does not seems to work fine.... I have another device Neatmo measuring CO2. It says it's not 400 but almost 1300ppm

COuld you help?
thanks,

]]>https://community.m5stack.com/topic/3103/units-co2-tvocRSS for NodeWed, 29 Apr 2026 04:12:40 GMTThu, 18 Mar 2021 22:38:01 GMT60<![CDATA[Reply to Units CO2/TVOC on Sat, 12 Jun 2021 21:29:07 GMT]]>hi,
don't know why but if you set that line n°31 in comment, it seems to work

"# tvoc0.set_iaq_baseline(35187, 35502)
while True:

you may try to use the sample loop that you find in UIflow_Unit TVOC.

As you can see on the picture below, TOVC/eCO2 can be use in a classroom context and it works fine
I initialized it outside the window and came inside after

0_1623533101105_Mesures5.png

]]>https://community.m5stack.com/post/14086https://community.m5stack.com/post/14086Sat, 12 Jun 2021 21:29:07 GMT<![CDATA[Reply to Units CO2/TVOC on Sat, 20 Mar 2021 00:11:51 GMT]]>You need to find the right calibration (baseline) values for your unit, so only initialize it, but do not define a baseline, then you will see a difference. Also it should be clean air in the room, f.e. not smoking with closed windows for days.

for debugging purpose output the current baseline values as well, I think you will see a big difference to the ones in the sample then.

]]>https://community.m5stack.com/post/13155https://community.m5stack.com/post/13155Sat, 20 Mar 2021 00:11:51 GMT