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OpenMower – An open source lawn mower

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Re: OpenMower – An open source lawn mower

#181

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Please don't run them at night to protect animals like hedgehogs and others that are active at night.

I mean how fast do these mowers mow? I seriously doubt it's fast enough to run over an animal

I think the concern is animals that hide or sit still when threatened more so than it chasing down a rabbit :p Also, eventually animals would get used to the noise until they get hurt.

Re: OpenMower – An open source lawn mower

#182

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chrip There’s a growing discovery on YouTube and TikTok videos, that some people just live like this.

Your brain will completely tune the beeping sound out after a certain point, if it's a thing you notice at all. Similar reason to reversing truck beepers being replaced with ones that produce white (or other coloured) noise, so you don't lose your ability to hear where they are. It's hard to believe until it happens to you.

Still hasn't happened to me; beeping smoke alarms drive me crazy.

Re: OpenMower – An open source lawn mower

#183
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…

Please don't run them at night to protect animals like hedgehogs and others that are active at night.

It's a nice thought but the reality is that you'll be killing animals no matter what. I have a 48" riding mower and live in a rural area. At first I was really worried about all the field mice, voles, frogs, etc., that I saw running away from the mower. After a while, I realized that no matter how hard I tried, a certain number of them were just going to die. I tend to let my lawn grow fairly tall before cutting, and it's a mix of grasses, clovers, wildflowers and other plants that just grow naturally around here. The downside is that a lot of small animals live in it. I only remember running over one bunny so far, but who knows how many I might not have seen.

At least it's not fawns. Baby deer seem to be a magnet for combines harvesting corn.

Re: OpenMower – An open source lawn mower

#184

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…

Using current state of tech parts, including US sourced batteries with 10 year performance guarantees, I designed a "clean sheet" electric UTV constructed with bio-composite materials that would put the John Deere Gator out of business. The NEV carve out is fascinating. I learned how to scale RC cars up so I look at this differently than Lincoln or Tesla thinking EV is a reason to stuff more and more and more things…

I would love to hear more about this if you have information online anywhere.

I gave up on having an electric mower any time soon since I have a riding mower and a garden tractor that simply won't die. I really don't want to buy something new if I can keep repairing old stuff, no matter how annoying it gets.

However, I am interested in building an electric UTV in large part because it would be quieter than my Honda Foreman.

Re: OpenMower – An open source lawn mower

#185
post #94

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> 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?

This is as much a complaint about high prices as the fact that Briggs & Stratton keeps making and selling an engine with an absolutely awful design. If you want the boring details: it is a single cylinder 4 stroke motor. The first issue is that while it is dead simple, it does not have a modern way to control the RPM. These motors are meant to run at roughly 3600 RPM but at full throttle (how they are meant to be ope…

Is this a newer design? Asking because I have a 40-year-old Murray garden tractor with an 18hp 2-cylinder Briggs 4-stroke and while it's harder to start in winter now (snowblower duty), it doesn't show any sign of dying soon.

Re: OpenMower – An open source lawn mower

#186

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Would you mind sharing any pictures or video about the mower? I converted my push reel to electric without a kit, and have been considering putting separate high torque, low speed motors for drive wheel control to start moving towards autonomous cutting. Would be great to see your experience!

I made it for my country home and won’t be there for a bit but maybe one day I’ll document it. But the parts store I used closed down, Open Builds Part Store. It’s nothing proprietary to them, I just got all the v slot aluminum frame and connectors there to build the chassis. Then I got hub motor wheels on Amazon or Aliexpress and batteries too. Most small components I get on Amazon, motor controller. I went with off…

> after than it’s the same as building any vehicle

LOL. Love this line ;-)

Re: OpenMower – An open source lawn mower

#187

Earlier quoted context omitted.

This is as much a complaint about high prices as the fact that Briggs & Stratton keeps making and selling an engine with an absolutely awful design. If you want the boring details: it is a single cylinder 4 stroke motor. The first issue is that while it is dead simple, it does not have a modern way to control the RPM. These motors are meant to run at roughly 3600 RPM but at full throttle (how they are meant to be ope…

Is this a newer design? Asking because I have a 40-year-old Murray garden tractor with an 18hp 2-cylinder Briggs 4-stroke and while it's harder to start in winter now (snowblower duty), it doesn't show any sign of dying soon.

This is the Intek single cylinder 500cc that is rated for 16-18hp depending on who you get it from (though internally they are all the same). I do think it is newer but not that new. Their V twins are apparently a bit more bulletproof though I haven’t taken mine apart to check. That’s the one that catches fire now due to bad wiring.

Re: OpenMower – An open source lawn mower

#188

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I often wonder about this. I think GPS is essential. Tie it to a location - if stolen, it won't operate. Then a way to text you if it is moved outside the designated area. Telling you where it is. At that point, I suppose it would still be worth stealing just for the battery? A hard problem to solve.

The problem with gps is it doesn't work (reliably) under trees which many lawns have. Since trees are common in yards they need something else anyway and at that point you can get rid of the gps

Need to get the multi-gnss like my cycling computer from Garmin has

It's so accurate it's scary. Shows me the what side of the road I'm on and even shows me how much I'm in the lane lol

Re: OpenMower – An open source lawn mower

#189

Earlier quoted context omitted.

The problem with gps is it doesn't work (reliably) under trees which many lawns have. Since trees are common in yards they need something else anyway and at that point you can get rid of the gps

Need to get the multi-gnss like my cycling computer from Garmin has It's so accurate it's scary. Shows me the what side of the road I'm on and even shows me how much I'm in the lane lol

that doesn't help when there is no signal which happens. Sometimes you can use other input to get more accurate, but only sometimes

Re: OpenMower – An open source lawn mower

#190

Earlier quoted context omitted.

Another reel mower user here. But our, uh, lawn, I guess you'd call it, has maybe 300 sq. ft of grass. Well, mostly grass. There's other stuff in there that I'm pretty sure is not grass? Come to think of it, 'mostly' grass at this point is a bit of an exaggeration. Also, in the spring violets. Which I leave for the bees until June. Rabbits come and help out too.

When I was a kid, mowing my father's lawn w/ a riding mower, I always detoured around the violets in the spring... these days, I will usually dig up and transplant any volunteers from the yard to the nearest suitable garden bed with open space.

I've had quail nesting in my yard. I didn't bother them with the mower until the chicks matured and left.
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