MultiChannel gas sensor problem


Trying to get values from my new MultiChannel gas sensor. Even after calibration I get “invalid values”. Printing eg NH3 gives -1.

I tried with both an Arduino MKR 1200 + Arduino Grove shield as well with an SODAQ SARA N211 (Grove connectors on-board).

Any idea what can be the cause?



When trying with the RawData sketch I get values.

The invalid values I get with the ReadSensorValue_Grove sketch. Am I right this sketch can’t be used with the boards I use?


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