Problem using SDP31 differential pressure sensor

Other
1

I have connected a SDP31 differential sensor to my IoT 9DoF logger board which does detect the sensor OK. The logger is connected via USB to my PC running Teraterm.

Initially the readings from the sensor are a scrolling list of:

-9999.000
-9999.00
etc

After configuring the sensor to output pressure Pa and no temperature correction the sensor provides meaningful differential pressures. However, after saving these settings and then re-starting the loT 9DoF the readings revert to -9999.00, etc.

I have tried everything but the problem remains. Any suggestions?

2

Configuration - SparkFun DataLogger IoT Hookup Guide Be sure to follow these steps to ensure it saves correctly and see if that helps?

3

Thanks for the suggestion. However, today I find that my logger is not communicating correctly via COM1 or COM7, simply streaming random text then stops. I was about to update the firmware but cannot now do so since I suspect the logger is faulty.

I have tried to use this differential pressure sensor connected to my older Artemis OpenLog but it responds on Terra Term to say “no Quiic devices detected”. Is there a solution? Can I force a connection?

4

Try swapping USB ports & cables to see if that helps

Is the SDP31 lighting up (LEDs)?

5

Yes, I have tried different USB ports and two cables. The SDP32 does light up. Finally, I have the SDP31 (plus 2 other Quiic sensors) working with an OpenLog Artemis but only after updating the firmware on that device.

I suspect that the IoT logger is damaged.

Nevertheless, many thanks for your advice.

6

If it was purchased from us, head over to Return Policy - SparkFun Electronics (contact vendor if bought elsewhere) :slight_smile: