@Mike1 have you noticed if it could be temperature related? Bad trace on a board could open during the cold and make connection when it’s warmer.
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@mike1 Hi, we want to clarify that we haven’t given up on GPS technology. The reality is, GPS can be affected by many factors, as mentioned earlier, which can lead to the signal being unstable at times. That’s exactly why we introduced PPVS technology, which helps Yarbo identify its location and operate smoothly even when GPS signals are unreliable or weak.
We understand that GPS alone isn’t always the perfect solution, but PPVS is designed to help fill that gap when needed. We’re continuously working on improving both the GPS and PPVS systems to provide a more reliable and stable experience. Based on ongoing testing and user feedback, we continuously adjust and optimize GPS accuracy in real time — for example, we’ve enhanced GPS precision during mapping, which helps Yarbo plan areas more accurately and operate more smoothly
Thanks again for your feedback, and we appreciate your patience as we continue to refine the technology.
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@ken.w.gregory Hi, thanks for sharing your observations!
Regarding the GPS issue, while we haven’t seen a widespread pattern tied to specific serial numbers or delivery dates, we’re always monitoring and investigating any potential hardware-related concerns. The GPS performance can be influenced by several factors, and we’re actively working to improve the overall reliability, especially with the PPVS system. We appreciate your feedback on how it’s been working for you after turning PPVS back on.
As for the recharging error message that started on October 22nd, this appears to be a small firmware bug that we’re already working to fix in the next release. For now, please try hitting “Recharge” again and then manually resume your work plan — the unit should continue charging normally despite the mixed message in the app. Sorry for the confusion, and we really appreciate your patience while we roll out the update.
Regarding the cellular card reactivation for November, we’ve seen that your support ticket has already been processed. The SIM card not reactivating for two consecutive months was caused by the network provider. Our software team has worked with the provider to resolve the issue, so you should now be all set. If your cellular connection is working normally, no further action is needed.
It’s great to hear that after fixing the pinched antenna cable, your Yarbo is working well. Thanks again for all the helpful insights, and please feel free to keep us updated with any other issues or suggestions!
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Does not seem to be temp related. Did it in the summer when we had 80 degree weather. Yesterday we hovered in the high 40 to mid 50’s.
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@Yarbo-Forum As a datapoint, it doesn’t seem necessary for me to hit “Recharge” in my case. It simply charges on its own. I’ll pay closer attention the need to hit resume.
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As many know I had gps and connection problems since June, finaly yarbo replaces my core. Since then I had zero - 0 - issues with gps, so for me it was clearly an hardware issue, and it was no antenna issue as I had to swap them over from the original one.
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Glad to hear it’s finally solved!
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Do you recall your serial number? Curious how close the serial number is to @mike1 ‘s serial number.
@mike1 is this your original core?
@ken.w.gregory mine was purchased when the announcement of the Pro came out. I think I got it around mid-July of this year. I have now had 2 calls with China in the past two days, last night was 1AM. They can’t find anything wrong. Yesterday it left the charging station and went 3 feet then waiting for GPS, thats new. More pictures sent showing an empty yard without trees to prove for the 10th or 11th time the same thing. I am getting backed into a corner to just dispute this with AMEX.
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@Yarbo-Forum any chance you could send @mike1 a core to test? Seems he’s been fighting this for quite a while.
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I got asked for more photo’s which I just provided, but here is some good news. Per the email “To further improve your experience, we will be sending you our newest version of the RTK antenna, which demonstrated significantly better performance during our internal testing. As this model has not yet been officially released, you will be among the first batch of users to receive it. The antenna is expected to ship in approximately 15 days, and we will notify you once it’s ready for dispatch.”
I am more than happy to wait 15 days if this simple fix will correct the problem. The email said they would “explore other options” if this did not resolve the issue.
Finally some movement after 2 months. I wish it wasn’t this painful. When this works it rocks! Today it turns out is a good day. The exact same mapped area it would not work in yesterday, flawless today. I started the plan while on the call with China last night to show that it would not move 3 feet like I had all day yesterday leaving the dock and wouldn’t you know it. Worked fine. Has recharged 3 times now and still going without an issue in the exact same area it refused to do anything in yesterday (even after manually moving to the mapped area).
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Wantedto use the opportunity (the topic) to ask about high vs low RTK antennas. How can I tell whether I need to consider installing high RTK anetennas on the rover?
Currently the device operates normal even at the farest point from the datacenter.
Rover loses GPS signal under huge or tall trees and close to house walls. I’m wondering if high mount RTK antenna would change anything?
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@andris.leja I asked and was told they are basically the same - designed for snow accumulation to be taller as to not impact reception.
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Ok. Thanks!
As snow blower is not for my circumstances and yard, then I’ll stuick with low antennas with less risk to get them broken under some tree branch or whatever else.
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With this topic on my mind it reminded me of when I first got certified for IFR (flying an airplane without being able to see what’s around you - you are in the clouds). In that if we know where we are coming into let’s say an airport, I can take a heading, my speed and a stopwatch and navigate around with no GPS and put myself exactly where I need to be to shoot another approach. I can fly for miles not a few DRK feet. I assume this is the basic principle of DRK, but why the restriction? Once the core starts it knows exactly where it started. It knows its travel speed. I assume it has some built-in heading / compass vs only GPS? Am I off my rocker? Once the yard is mapped could the unit not do all of the computation of location on its own without GPS?
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With VSLAM it could. VIO is the next step to help it find a fixed reference point and focus on keeping a straight line in the absence of GPS. I don’t believe it can account for its heading using magnetic compass at all. The IMU is what DR uses currently. There are some limitations to this because of vibrations and other distortions they have to filter out to make it usable data. Add slope or track slippage onto that and that throws off the gyro and wheel odometers. All fairly complex stuff to calculate for it seems. I think full VIO will get it closer to what you are describing though. VSLAM would be entirely not reliant on RTK but it does have its limitations as well.
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I have enough reference points for it to pickup. I have never tried so hard to find a way to get something to work. This thing is amazing if this could just get ironed out.
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Hope those antennas work well for you or they figure something out in the interim.
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I finally got to replace my rtk antennas and cables. I am getting L2: 12-15 which is better than 0. I have not had time to try to mow and there seems to be another seemingly unrelated issue with my cameras but I will submit a ticket for that after the upcoming firmware update. As promised please extend my apologies to the tech team. While I haven’t done a test mow clearly the antennas were part of the issue after all. I will know more soon but it is nice to see a GPS signal again.
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Hello Mike,
Thank you for the update — I know the GPS issue has caused you a lot of trouble, and the troubleshooting process itself can be quite frustrating. I’ve already discussed your case with the field service engineer in charge.
Please let us know once you receive the new antennas and have a chance to test them, so we can see whether they help resolve the issue. We’ll be sure to follow up on your case as soon as we receive your feedback.
Thank you again for your patience and cooperation!
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