Automated Slope Optimization and Triggers

Thanks for sharing your solution for handling slopes—really appreciate the photos and details! I’ve reviewed your support ticket and understand that you’re looking for a long-term fix that improves slope performance without interfering with the rear vision obstacle avoidance.

While I’m not sure if there’s a confirmed roadmap for this yet, please rest assured that I’ll pass your feedback along to our product team for further consideration. Your input is truly valuable—thank you again!

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Yarbo keeps destroying my lawn, this whole system is so disappointing. It dances around, bottoms out, had to resume 3 times because it slipped

The weight on the back helps a little, but over all this thing is just not suited for slopes.

Had do do a different direction today, as yarbo is leaving trackmarks always going up the hill in the same direction after 4 months of slipping, the dirt patch up at the bushes is also from yarbo parking in the hedge.

Photo and video album of Yarbo doing things…

For the last 2 hours I was checking yarbo every 15 min because it was doing something it is not supposed to do.

This one is perfect, it goes downhill, can’t control it’s speed and in the end just stops shutting everything off because it lost GPS. In the middle of the freaking garden…

Yarbo losing control over speed and stopping with no GPS

How is this an autonomous mower…? This is a joke (a very expensive one indeed)

And in the afternoon yarbo wanted to take a trip into the woods https://photos.app.goo.gl/9bw3imUjW4bV93Y57

Didn’t stop for minutes, killed a rainbird sprinkler, and did an excellent job on killing the lawn….

Hi Deixi,

I’m really sorry to hear about your experience with Yarbo. Regarding the GPS loss issue, I see that you’ve scheduled a meeting with our support team. Please feel free to keep me updated on whether the meeting helps resolve the issue.

Additionally, adjusting the route angle can help reduce wear caused by repeatedly using the same path.

Thank you for your patience, and we’ll do our best to assist you!

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I also have a lot of steep slope.

I start testing out with some dead ends. It goes uphill ok but coming down is inconsistent.

Sometimes it will break continuously to slow down the descent. Other times it will go down really fast and goes off track. It’s a problem when there are stairs or trees around the path. It’s not able to turn on the slope so once it makes contact with something, it’s really stuck.

Sometimes it will just start slipping when going downhills. And when it slips, it starts tearing up the turf.

I know someone wants to make it goes down faster but I’d rather it goes down slower, or rather consistently slow. The deadend mowing speed is set to slowest but still gets this issue.

The deadend area feature would be really useful. Wish it gets roll out soon. I probably would have to make 50-75 deadends otherwise.

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I recently put in a ticket for this downhill loss of speed control. It is a problem that needs design attention.

I have seen this loss of breaking ability in other stepper-motor controlled projects for 50 years. It can be electronically corrected if the circuits and firmware controls are on the circuit boards.

I will have to wait for an official response or fix. We need to tell Yarbo what we need to work effectively on slopes. It is up to them to figure out how to make it happen.

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what speed do you have it set at in work preferences? I have noticed when set to medium adaptive slope is not maintained. But works much better when set to slowest in work preferences.

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I set it to slowest, the breaking going back downhill is not stable.

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I have mentioned this to a few of the YT along the way now and was told it was being worked on but haven’t heard anything about it yet!

When you made the intiial global change for dealing with slopes it was disasterous to some of us but you did try to fix it by implementing “Adaptive Ramp” mode so we could turn it off which was great for going up and down a slope! There is still the problem when mowing across a slope where Yarbo still goes at a snails pace! Before the initial change I was able to mow my ditch slopes decently in “Slow” speed and it did a pretty good job and I was able to do them on a single battery charge! Even after adding the Adaptive Ramp when I’m trying to mow the ditches it will not move at Slow speed but defaults to Slowest and when trying to mow approx. 1250 Linear feet of ditch times 10 to 12 passes at Slowest speed is by no means efficient and actually doesn’t do as good of a job as it did in Slow speed! It is also very tiring due to the fact that I am standing out there watching it incase of any issues when turning at the ends near culverts! There needs to be a way that it will run at the speed we select it to run at even when it is running along a slope, I have every mode turned off and it still defaults to snail speed which no longer allows me to mow the ditches as I originally was able to!

The second part to Slope Optimzation is in turning!
Tank steering systems allow a tank or other continuous track vehicle to turn.

Because the tracks cannot be angled relative to the hull(in any operational design), steering must be accomplished by speeding one track up as you’re slowing the other track down(or reversing it), or a combination of both!

Tanks turn by varying the speed of their tracks. A tank can turn by either slowing down or reversing direction of one track while the other track continues forward, or by using a “pivotal turn” where one track goes forward and the other track backwards allowing the tank to turn in place!

“A tank should avoid backing up an incline due to accidental possibilities of flipping over”!

A more detailed explanation:

Differential Steering:

Tanks primarily use differential steering which means they can adjust the speed of each track independently!

Turning:

To turn the tank the driver sends more power to one track(the outer track in a turn) and less power to the other track(inner track)! On a manicured lawn I’d recommend either slowing down the inner track or speeding up the outer track but not both and also having the outer track turning at a 2:1 or 3:1 ratio depending on the turn!

No Steering Wheels:

Unlike cars, tanks don’t have steering wheels but instead they have controls that adjust the power to each track!

In this application the tracks are operated by motor drives which are in turn directed by software and algorithms which can be a bit more complicated than mechanical steering methods!

Pivot Turn:

In a tight turn one track can be stopped or even reversed while the other track continues to move forward allowing the tank to essentially spin in place! (Stopping a track in a pivotal turn or any type of turn on a manicured lawn or on an incline is not recommended, the stopped track will grind the ground up and get stuck creating indents/slippage in and on the slope)! A pivotal turn such as a Zero-Turn can be accomplished with both tracks always in motion either by slowing one track down, speeding one track up or even reversing one track as the other track is moving in a forward motion! This process can also be incorporated in all styles of turns!

When on a slope it is detrimental in a turning operation that the fewer movements made are essential in completing a smooth and less abrupt transactional turn! The turn should be a continuous non-stop movement so if running alongside a slope when coming to the end it should slow the inner track creating a turn and increase to an equal speed when going up and slow back down when positioned for completing that turn all in a continuous motion! The tank or machinery should never stop on the incline to complete its turning and should not stop upwards or downwards on the incline! If it has to stop it should only be at an angled position where it can then reverse both tracks with the inner track at a reduced rate until parallel alongside the slope and then both tracks can be of equal speeds!

It works the same way when coming down an incline you begin your turn slowing down the inner track adjusting speed as it is coming down and gradually slowing the inner track again in positioning your completion of the turn, it can then back up alongside the incline in aligning with its next run!

In actuality a tank should always avoid backing up an incline due to its front counterweight!

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Two words: Moment Arm
Resulting two words: Oh snap!