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OpenMower – An open source lawn mower

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Re: OpenMower – An open source lawn mower

#111

I run an Open mower on my 1400 square meter lawn in the USA. AMA. (ps. If you are interested make sure to go to the discord instead of just reading the docs or GitHub pages -- that is where all the activity is!)

The page says there's no obstacle avoidance. How does it handle obstacles? Does it at least have a sensor to detect it running into an obstacle to then find some way around it? This would be the main concern for me. Also, how long have you had it and about how much downtime have you had?

It does not have obstacle avoidance, the best it has is recognizing it keeps getting stuck and skipping the next goal until it finds a goal it can reach. This can often look like obstacle avoidance since the next goal might be in a slightly different direction and so it will be able to continue. This is aided by a new feature that I added which will make the mower back up first when it gets stuck before continuing.

However, I should note that it's a hackable ROS system, so people have added obstacle detection with various sensors on their mowers. There is just not official support or a standard way to do it.

I've mowed with it this summer and last summer, and there hasn't been downtime at much as repeatedly getting stuck and requiring me to bring it back to the dock (although less and less). But my lawn is probably the hardest lawn any Openmower mows, as I mentioned in a cousin comment.

Re: OpenMower – An open source lawn mower

#112
post #95
post #72

Earlier quoted context omitted.

Anything having lots of rpm ain't silent. Especially not at night. So they surely ain't as loud as a combustion lawn mower and are pretty silent in comparison, so maybe you won't notice them in the city with its background noise. But in rural areas I perceive them as noisy even on daylight with normal noise level. And I never saw anyone using them at night - for a reason. And as for gp .. he is already shadowbanned a…

Electric motors can run at quite high rpms with lower decibels. Sure not silent but the origin is low enough that at a distance say 25 feet it’s almost silent.

True, but remember what’s quiet to a human may be quite different to what’s quiet to a hedgehog. When reading about these things it’s surprising how often things that we might not consider - like how vibrations travel though the ground - can confuse wildlife in ways that we might not expect when viewed through an anthropomorphic lens.

Re: OpenMower – An open source lawn mower

#113
"Let's be honest: The current generation of robotic lawn mowers sucks. Basically all of these bots drive in a random direction until they hit the border of the lawn, rotate for a randomized duration and repeat. I think we can do better!"

The funny thing is: this actually works incredibly well. Perimeter wires are a PITA to install, but once that's done, they are a very practical and flawless method for making sure the robot does not escape into the neighbour's yard or worse. The random movement is really effective too. What exactly can a smart robot do better?

Removing the need for perimeter wires would be great, as long as it works 100% flawlessly. Obstacle detection would also be nice, so I can avoid my mower chewing up the toys my kid sometimes leaves lying around (though it is a great motivation to clean up!)

Re: OpenMower – An open source lawn mower

#115
post #72

Earlier quoted context omitted.

I'm assuming (perhaps unreasonably?) that given the suggestion you could run it at night, that it's silent, or near silent? If that's not the case, GP must be a madman.

Anything having lots of rpm ain't silent. Especially not at night. So they surely ain't as loud as a combustion lawn mower and are pretty silent in comparison, so maybe you won't notice them in the city with its background noise. But in rural areas I perceive them as noisy even on daylight with normal noise level. And I never saw anyone using them at night - for a reason. And as for gp .. he is already shadowbanned a…

> And I never saw anyone using them at night - for a reason.

...how late you were checking?

I can see reason to set them on say 5AM so it finishes before you wake up

Re: OpenMower – An open source lawn mower

#116
post #60
post #7

Here's what robotic mowers blades look like to understand how they work - https://images.squarespace-cdn.com/content/v1/676d76e61268a4... We just got a Sunseeker X7 to do ~4 acres of grassed area but probably ~2 acres will be garden beds and roads etc The hardware is there, it's all software now. People talk about updates and the robot improved amazingly, comments like - "these scuffs are from pre-update" These are E…

The wildlife (like hedgehogs) will feel very audited when they get sliced up by a razorblade, run over, and can barely drag themselves off your lawn to bleed out throughout hours of pain. If they don't bleed out, they often end up mutilated, unable to properly eat, walk, etc. Nice wildlife auditing. Hedgehogs are endangered in lots of areas of the world. Run your robot lawnmower during the day. If you don't like that…

Hedgehogs ignore loud moving things going their direction ?

Re: OpenMower – An open source lawn mower

#117
post #94

I was hoping this was more of a hardware project as in building the physical mower from scratch. I am not quite sold on the robotic mowers but the quality and market for riding mowers is insane right now. I own two riding mowers and both are completely dead. One needs a rather expensive wiring harness so they it would stop catching fire when it runs. The other has the most common single cylinder engine that comes in…

> And the prices of these new and used are out of this world even compared to baseline inflation. How many such cases do we need to have to be able to put out the hypothesis that the baseline inflation figures we're being fed are wrong?

No amount of things like grass mowers can add up to it.

You have to look at stuff people buy in large volume, like food, housing, energy, education, and health-care.

(By the way, I don't know if your figures are correct. I don't even know what country you are at.)

Re: OpenMower – An open source lawn mower

#118

I have been dreaming of small solar robots that quietly trim the grass all day. Static blades pulled across the grass in short bursts. RC orchestration guided by security cameras.

You cannot just trim grass all day unless you want a terrible lawn. You need to cut at the right hours.

[dead]

Re: OpenMower – An open source lawn mower

#119
> The current generation of robotic lawn mowers sucks. Basically all of these bots drive in a random direction until they hit the border of the lawn, rotate for a randomized duration and repeat.

I recently (a few weeks ago) bought one. While researching on the available options (which seemed relevant to me), actually almost none of the robots work this way. Most of them systematically go through the lawn. I think from those that I checked, only the Worx Landroid does it randomly.

I was searching for some model which works without wires, because I was too lazy to set this up. Basically, in general, I wanted sth which required as little effort as possible.

I decided for eufy E15, which uses camera (no GPS, no wires, no lidar, nothing else really). And it just seems to work. It creates a map first, and then systematically goes over the lawn. I didn't really need to do anything.

(I'm not affiliated with eufy in any way. I'm just quite happy with it so far.)

That said, obviously, having an open source variant of such a robot would be even nicer (if it works)! So I'm quite happy to see such a project.

This robot here uses GPS, as far as I can see, as the sole technique for navigation and localization. From reports that I have read, GPS mostly works fine, except for some cases where it does not (where GPS coverage is not great). Camera on the other side always works (during daytime). Maybe this could be added to this project? Of course, using the camera is probably quite a bit more complicated, and more prone to errors, but overall might be more robust and reliable.

Re: OpenMower – An open source lawn mower

#120

Earlier quoted context omitted.

I’m not sure what your criteria is, but mine is to keep the grass alive and provide root structure for my soil.

Aesthetics matter.

With such sweeping statements, it clearly matters to you. However, time matters to me. Others are entitled to have different priorities from you.

My Luba 2 has saved me 3 weeks of manual mowing over the past year and my lawn has never looked better. Frequently complemented by others.

It's just a lawn and a lawnmower. I'm not playing keeping up with the jones, hoa bullshit or whatever other nonsense Americans invent. It's just a Scottish garden for the wildlife to roam in.

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