how to know if only one sensor is not working ?

[matthieu4294967296moineau]

Hello,

If the scd30 is not properly wired, then the function airSensor.begin() will return false, same for airSensor.dataAvailable() if it was disconnected after being initialised.

But if only 1 from the 3 sensors (co2, temperature, humidity) stops working, how can I know it ?

Because when calling airSensor.dataAvailable(), it will still return true for the 2 remaining sensors, and if I call airSensor.getCO2() (if it is the co2 sensor that is broken), I will get the same value over and over.

Thank you

[nseidle]

Hi - The SCD30 has only one allowed I2C address so you must either use a Qwiic mux or a device with multiple I2C buses (not many have 2, very few have 3). Assuming you're using a mux, you'll switch between channels and create a sensor for each channel (airSensor1, airSensor2, etc). Each sensor will have its own airSensor1.dataAvailable(), airSensor2.dataAvailable() that will return true/false. If I was concerned about if the sensor was still answering, I would have a timeout that, once crossed, marked the sensor as non-functional. I hope this helps clarify things a bit!

As this is not a problem with the library, if you need more help, I recommend posting to the support forums.