[TriEmbed] GPS/RF issue

[Pete Soper]

The aluminum foil should be replaced with a good USB cable that has the 
"bulges" indicating RF chokes. Adding additional RF chokes to the cable 
on the end closest to the camera may help further. The GPS cable should 
probably get an RF choke or two too.  My final suggestion is to hit the 
camera with an eight pound sledge and buy a different one that has an 
FCC label.
-Pete

On 4/30/19 10:33 AM, Charles West via TriEmbed wrote:
> Hello from the North!
>
> I'm still working on the golf course robot.  Recently I've run into a 
> rather odd issue.  When I put everything together for my 1/8 scale RC 
> car platform, my GPS module refused to converge.  I spent a solid 4 
> days debugging it only to eventually discover that the problem 
> appeared to be that my USB 3 camera was putting out large amounts of 
> RF interference of a spectrum suitable to interfere with my GPS even 
> when there was a metal ground plane between the GPS and the rest of 
> the equipment.
>
> Eventually, a combination of wrapping the camera in metal tape, 
> placing the GPS with a ground plane elevated way above the rest of the 
> robot and wrapping the camera's cable in aluminum foil finally got the 
> GPS to converge.  The only problem is, the accuracy of the GPS is far 
> worse than in the previous version of the robot.  Originally, I got 
> within a 2-3 meters with an occasional drift.  Now it squiggles all 
> over the place.
>
> Does anyone know what I should try next to get decent performance 
> and/or hunt down any interference for the GPS?
>
> Thanks,
> Charlie West
>
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