CJMCU-8118 ; 3 degrees over and 5% humity bellow. about ccs811

[nordicp]

The rh/T sensor on this little board is pretty close to the CCS811 which generates some heat. The PCB is small and the trade off is that the gas sensor influences T and rh reading, the +2 to +3C sounds reasonable, as a result rh is lower than measured at with a seperate device running at lower (ambient) temperature.
I flashed a sensor from 1.0.0 to 2.0.0 using a ProMini 3.3V and now will give it a try with ESP32. Since ESP32's IC clockstretchig is fixed and cannot be set I wonder if this causes problems.

[nordicp]

Just noticed that #39 reported an issue with ESP32 and running the ESP32 at lower frequency solved the problem.

[maarten-pennings]

On other hand, our sensor hardware version is 1.2 and app version is 1.1 when we try to upgrade to app version 2.00 or 2.01 we can not get any measurements again.

What do you mean? You have multiple CCS811s and you upgraded some, and then they don't work anymore?

Do you think which is the minimum hardware version we need to upgrade app to 2.x?

To the best of my knowledge there is only one hardware version.

[woiptcs]

Thanks for your answers Maarten and Nordicp !,

After all research I think , the proximity of both sensors is the key of the wrong measures.
Regarding to the APP version upgrade , when I upgrade the sensor to V.2.00 or 2.01 , our application does not work again, also using Arduino examples , we need to do some more research again.

Do you have the v1.0 or v.1.1 binaries in order to downgrade the current sensors?

Thank you in advance !

Santiago .-

[maarten-pennings]

No sorry, when I wrote this library, the manufacturer only published these new binaries, not the old one.

[woiptcs]

Ok Thanks anyway Marteen , good work and stay home brother. El dc., 13 de maig 2020, 19:18, Maarten Pennings <[email protected]> va escriure:

…

No sorry, when I wrote this library, the manufacturer only published these new binaries, not the old one. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#44 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABTQP3SF5ZFX4IYVJP66JALRRLI7DANCNFSM4MYGM2DA> .

[maarten-pennings]

Somebody sent my older versions; there were added.