How do I know if HaLow is being utilized. I have some tough gps spots where my Cash will just stop and wait for GPS. Isn’t it supposed to fall back to other comms and keep going?
You can look at the diagnostics screen and scroll down to HaLow. My Yarbo switches to 4G at about -80 for HaLow signal Strength.
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Yes, it will do communication fallback (HaLow, WiFi, Cell) if the communications are the issue. Communication/network problem can present like GPS problems.
Generally communications are not the issue and it’s actually the GPS signal available to the Data Center and rover, usually the rover because it’s moving around out there getting under tree canopy.
If you can supply a screenshot of your Diagnostics page when the rover isn’t happy (scroll down to get everything, and you can paint out the CNGGA numbers and DC_xx numbers), we can take a quick look to see what’s going on.
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It was stalled under a tree when I snipped those screens, a few seconds later it started up, drove straight out of bounds and murdered my poor plastic pink flamingo before banging into a deck railing post lol
I backed it out of that situation, drive it to the center of the yard, resumed and it finished the plan with no further issues at all
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With those L2 numbers I’m not surprised. You should submit a ticket and supply the time that happened. Should not have happened with that low of GPS satellites and that RTK status.
It does look like it’s a GPS only issue from what I’m seeing though. Nothing you can do about that but just let it wait and the satellites will move enough for it to get signal again and start back up. Hopefully not like it did previously.
I have seen it drop Halo and fall back to 4G permanently. The only thing the restores Halo is a reboot of the Data Center. This has now Happened twice in the last month.
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This has happened to me three times over a span of 6 months. Rebooting the data center was the only way I could get it to work.
Thanks Brian. If it happens again I’ll make a ticket. I’m not surprised it has gps issues, there’s a tree really stretching out across my back yard, but the rover was only like 20 feet away and in direct view of the DC, so I was just thinking that however this thing handles short term satellite drops, being that close And in direct view I figured it ought to be able to carry on. Maybe not.
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Yeah having a view of the data center doesn’t do anything for you. They don’t need to see each other. The data center and the rover both have to see the same satellites in the sky though. They communicate with each other (over HaLow primarily) and compare notes essentially. The rover can’t always trust what he’s getting since he’s moving but in theory he can compare notes with the data center who isn’t and confirm it’s accurate and then do some extra math to make it more accurate down to the centimeter level. Hope that makes sense.
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Thanks Brian! I’m a bit slow on the uptick regarding the comms, but that finally brought some clarity to me. So if rover doesn’t see enough satellites for some certain time it will just stop and wait.
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That’s correct. Satellites are always moving around in the sky so eventually it should get enough distance between satellites to do the calculations it needs and resume. Most of the time, you don’t need to intervene. I get impatient sometimes because I want it to finish before the rain or I go to bed etc so I will pause the plan, move it and then resume when it recovers.
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Hey Brian, I had another thought, would the small change in height using the tall rtk mount improve the GPS performance at all? I really have little issue with overhanging stuff.
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It might but Yarbo has told me that it shouldn’t matter either way. I didn’t really notice a difference when I swapped but if you don’t have issues with low hanging stuff you could swap it and see if you notice a difference.
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