Thanks for your interest in the Intel® Joule™ Platform.
It's really strange that your USB port is generating this kind of interference to your GPS. Please let us investigate this issue and we will get back to you as soon as we have some useful information.
Have a nice day!
Thanks for your patience.
Since the interference is with the GPS module, it seems that this is a design issue. Unfortunately, guidance around designing solutions is out of the scope of the support, maybe other users might be able to share their feedback with you.
Thanks for your understanding.
Hi, I had the same problem:
It's basically a problem inherent with USB3 - the very fast data clock emits a lot of EMI across wide areas of high frequency spectrum when a lot of data is being passed across the bus, as with the realsense cameras. After some trial and error, I have managed to get a working GPS by:
a) getting a much better GPS - I moved to a ProfiCNC/Hex Here GPS unit which is multi-constellation and has very good filtering and ground plane.
b) Not only shielding the cable but more importantly the connectors. It seems to be the actual connectors at each end of the cable which is where most of the EMI is leaking. I created little cardboard boxes to go around each cable connector lined with copper, and made sure they completely covered the connector, mating with the 3d printed case.
Now I get enough GPS signal to fly. It's not perfect - there is still increased noise on the GPS and I get some GPS speed errors. I've got some ferrite chokes coming which I hope to help a bit more.
It would also be worth creating a large shielded GPS ground plane, attached to the existing ground plane, which will probably help a lot.
Basically, the Joule and the Realsense is not suitable for use on a UAV with GPS, without a lot of extra work. If you look at Intel's RTF quad which comes with the Aero board and the R200, they use the smaller (proprietary?) USB3 connector which is shielded all the way along but crucially fully shielded on the much smaller connectors.
Thank you very much for your detail response. It's a great help. I'll try it.
Thanks for sharing your feedback! It will be really useful for other users trying to develop a UAV with the Joule and a Realsense camera.
Have a great day!