Yarbo should more clearly set expectations that this product is only good on a farm. I have to continuously intervene due to loss of GPS signal even though it worked in the same spot the day prior. Do they accept returns? Not work $6k imo.
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For months now, I cannot get Yarbo to mow its work area plans completely in my back yard despite having L2 with 16 or more available satellites. Instead GPS signal loss occurs every time Yarbo mows. Yarbo can sit without moving for hours, or it goes crazy and goes outside of its boundaries which is a safety issue. It also has problems navigating no go zones. I have 2 Luba robotic mowers that use RTK and they never lose GPS on my property. Tech support in China takes days to respond to my emails. There is no real time US tech support with an engineer. If you call tech support less knowledgable staff answer the phone. Yarbo needs to fix the problem with the mower NOT continously searching for GPS, and often not finding a good GPS signal. The mower “suspending its mowing in its work plans” needs to be fixed immediately. This is a huge inconvenience for many Yarbo owners!! Yarbo was supposed to be able to mow along tree lines or under trees, as shown in YouTube videos, but it cannot do it reliablity. My Yarbo stops despite having no obstructions to the data center … only 50 to 100 feet away… because it cannot find GPS.
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We’re very sorry for the inconvenience caused by the GPS issue. We understand this is a significant concern for many users, and we’re actively working on improvements. Our team is looking into potential ways to enhance GPS performance and is also exploring refinements to the V-SLAM algorithm to help improve Yarbo’s operation in more complex environments.
Our technical team will continue to follow up on your case through your support ticket, and we truly appreciate your patience and understanding as we work toward improving the overall experience.
3 Likes
So how about trying something that has been in play for awhile now?
A 3D vision system in a navigation context allows robots and autonomous vehicles to perceive their surroundings in three dimensions, enabling them to navigate, avoid obstacles, and interact with objects in a more sophisticated way. This technology combines computer vision, computer graphics, and artificial intelligence to reconstruct a 3D image of the environment.
Here’s a more detailed breakdown:
How it works:
Specialized cameras, often using techniques like structured light or stereo vision, capture images that include depth information, essentially creating a point cloud representation of the scene.
Algorithms:
. Sophisticated algorithms process these images to identify objects, determine their positions and orientations, and create a 3D map of the environment.
Navigation:
. This 3D information is then used by the robot’s navigation system to plan paths, avoid obstacles, and interact with objects in a dynamic environment.
Key Applications:
3D vision systems are crucial for bin picking, where robots need to locate and retrieve parts from bins, as well as for autonomous navigation in various industrial and logistical settings.
Autonomous Vehicles:
. 3D vision plays a vital role in autonomous vehicles for obstacle detection, lane keeping, and overall navigation in complex environments.
Surgical Navigation:
. In medical applications, 3D vision can be used to create detailed 3D images of a patient’s anatomy, aiding surgeons in complex procedures.
Benefits:
Improved Accuracy:
3D vision provides more accurate and reliable perception of the environment compared to traditional 2D systems.
Enhanced Safety:
By enabling obstacle avoidance and precise navigation, 3D vision systems contribute to safer operation of robots and autonomous vehicles.
Increased Efficiency:
In industrial settings, 3D vision systems can automate tasks like bin picking and material handling, leading to increased efficiency and productivity.
In essence, 3D vision systems transform robots and autonomous vehicles from blind machines into intelligent systems capable of navigating and interacting with the world in a more natural and efficient way.
An outdoor mobile robot needs not only information derived from appearance (e.g., road location in a color image, or terrain type), but also shape information. In some tasks, such as cross-country navigation, the three-dimensional geometry of the environment is the most important source of information. In order to build three-dimensional representations of the environment we use an imaging laser range finder. 3-D vision for mobile robots has two objectives: object detection, and terrain analysis. Obstacle detection allows the system to locally steer the vehicle on a safe path. Terrain analysis provides a more detailed description of the environment which can be used for cross-country navigation or for object recognition.
Objects are detected from a range image by extracting the surface patches that are facing the vehicle. Neighboring patches are grouped into three-dimensional objects. The objects detected over many frames as the vehicle navigates can be combined into an object map. The resulting map can be used for navigating through the same region. Matching objects between observations is not very expensive in our case because we have only a few objects to match in each frame and because we can assume that we have a reasonable estimate of the displacement between frames from INS or dead-reckoning so that the locations of the objects detected in one image can be easily predicted in the next image. The algorithm for building object maps includes provisions for removing spurious objects and for the optimal estimation of object locations.
Object maps are not sufficient for detailed analysis. For greater accuracy we need to do more careful terrain analysis and to combine sequences of images corresponding to overlapping parts of the environment into an extended terrain map. The terrain analysis algorithm first attempts to find groups of points that belong to the same surface and then uses these groups as seeds for the region growing phase. Each group is expanded into a smooth connected surface patch. In addition, surface discontinuities are used to limit the region growing phase. This terrain representation is used in a cross-country navigation system.
As in the case of object descriptions, composite maps can be built from terrain descriptions. The basic problem is to match terrain features between successive images and to compute the transformation between features. In this case the features are the polygons that describe the terrain parameterized by their areas, the equation of the underlying surface, the center of the region, and the main directions of the region. If objects are detected they are also used in the matching. Finally, if the vehicle is traveling on a road, the edges of the road can also be used for the matching. As in the case of object matching, an initial estimate of the displacement between successive frames is used to predict the matching features. A search procedure is used to find the most consistent set of matches. Once a set of consistent matches is found, the transformation between frames is recomputed and the common features are merged.
They are already doing point cloud obstacle avoidance. They are still refining this in each firmware update.
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@yarbo-forum @byran.wheeler So after a long delay this morning. Was cleaning HVAC coils. But finally got to swap out the RTK cables X2, RTK mounts X2, and RTK antennas X2. Did all the normal reboots, and power downs needed to get the fix on. Was able to get 32% of the yard done. It wasn’t the easiest, Lots of babysitting. So like about 22 days ago when I was having the issues with the Data, Latency is not stable yet again. Was hoping with the fix they did remotely last time and is stabilized I wouldn’t have this issue again. Didn’t know if it was a update issue. Because it went away? Well it’s back. He has to stop and thing alot more that when he was running, before the GPS loss, and he went into the trees. Ticket #91428
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It’s possible the firmware update may have impacted whatever fix they deployed. Hopefully they can review the previous ticket and see what was done and address the issue quickly.
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@Yarbo-Forum I hope so too. I submitted to them, both the Old Ticket #91428, and the new one #98943. In the Support ticket today. That way they can refer to both if a question comes up. Try to make things easier. If different Support folks worked on the issues at hand. He’s on charge now. I do have an error that came up while he was on the way back to recharge. Right Cutting Motor Blocked. Guess I’ll check on that first thing in the morning. It was too hot again today. Ready to shower, and call it a day. 
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I’m sorry to hear you’re still experiencing this issue. I’ve reached out to the technical expert handling your support ticket to reinvestigate the problem as soon as possible.
We truly appreciate your patience and understanding!
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@bryan.wheeler - I’ve seen a couple people report Latency of -1. What does this indicate?
Data latency should be around 1 to 2 normally. This is the time that the unit last received correction data. The longer it takes to receive the data can impact the accuracy. It will pause at 15ms. Don’t think I’ve seen anyone report a -1. Do you have a link?
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That’s because it’s not receiving RTCM data from the DC it appears. Notice that the rover RTK status is 1.
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@yarbo-forum Mine was Latency of -1 this morning, and Adjust was -1 too. No GPS at all. Rebooted, and powered down DC and Core. So it helped some. Still having the issues I put on the Support tickets Old Ticket #91428, and the new one #98943 from a couple of days ago. But still having same issues with Latency Bouncing all over the place. L2 is 12, Status 4, Adjust 0, 25 Sats, Connection 3, HaLow -41, Hoping things get better soon. Was hoping that remote fix would come through, when I saw the numbers had changed so much. Was hoping just a reboot would put things back in motion. He was very slow trying to get and keep GPS. But was working 50% better. Was hoping the issue they saw with the bad GPS cable replacement I did would step it up.
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I’ve reviewed both your tickets, and to keep things clear, we’ve closed #98943 and will continue assisting you through ticket #91428. This issue requires further investigation by our tech expert. We appreciate your patience and understanding!
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@Yarbo-Forum I just got this email. The problem is still not fixed. I never replied because I was waiting for the problem to be handled. As you said “will continue assisting you through ticket #91428. This issue requires further investigation by our tech expert. We appreciate your patience and understanding!” 
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Hit reply and post the link to the forum comment from the forum administrator and state what problem you are still having and that it’s not resolved. This will auto open the ticket again and it should notify the tech.
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@Yarbo-Forum finally got to swap out the RTK cables X2, RTK mounts X2, and RTK antennas X2. Did all the normal reboots, and power downs needed to get the fix on. Still having the issues with the Data, Latency is not stable yet again. Was hoping with the fix you did remotely last time and it stabilized I wouldn’t have this issue again. Didn’t know if it was because of the update. Because it went away? Well it’s back. Ticket #91428
You replied to the email too, right?
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@Yarbo-forum Yes Sir.
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