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Why does my Yarbo lose GPS in one part of the yard?
If your robot works fine across the open lawn and gives up in the same shaded corner, compare the sky view and correction readings before deciding what caused it.
Why one corner and not the rest
Satellite count is rarely the whole story. A robot can see plenty of satellites and still not be able to trust the fix, because what matters is whether it can resolve a precise position from them.
That is why a spot can fail every single visit while the machine reports a healthy sky. The useful question is not how many satellites, it is whether the robot could trust its heading at that place, at that moment.
Finding the spots that fail
Each line names the zone, the size of the patch, how far it is from the dock and how many of its visits went wrong there, in the form a 20 ft patch about 785 ft north of the dock could not trust its heading on 5 of its 5 visits. Five out of five is a place. One out of nine is weather.
What actually helps
- Clear what is overhead if you can. A single low branch over a narrow pass is a common cause and a five minute fix.
- Route through it differently. A pathway that crosses the bad patch quickly, rather than a mowing pattern that dwells in it, often turns a failure into a non-event.
- Give up on the worst of it. Some ground under dense canopy will never hold a fix. A no-go zone there is not a defeat, it is an accurate description of your yard.
- Check the correction stream in the Health panel. If corrections are arriving late everywhere, the problem is not the trees.