External Compass does not work with Pixhawk

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1

Hi 3DR Support,

I recently received my first Pixhawk. Everything works fine except the external compass. The compass itself works with my APMs - so it seems to be a Pixhawk problem. I also tested another compass that is working with my APMs on the Pixhawk - same result.
The Pixhawk detects the external compass but the compass test in CLI mode only shows 0 or nan for all values. As soon as I unplug the external compass the internal compass shows correct readings (see attachment).
So my simple question is there anything else I can test or is this Pixhawk defective?

Thanks,
Thorsten

[attachment=0]ExternalCompass.PNG[/attachment]

2

Hi,

that is strange: after some reset, erase and reboots Mission Planner now detects the external compass in CLI mode test/compass. But, when I connect again to the Flight Data screen the external compass is not working but the internal one.

Any idea?

TIA,
Thorsten

3

Here is some explanation:

http://ardupilot.com/forum/viewtopic.php?f=21&t=6479

http://diydrones.com/forum/topics/pixhawk-bug-hw-or-sw-on-compassmot-procedure?groupUrl=arducopterusergroup