MultiChannel gas sensor problem

Products & Technology Grove
#1

Hello,



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?



Thanks.



UPDATE

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?



Thanks.