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Sabrees

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Show HN: Sowbot – Open-hardware agricultural robot (ROS2, RTK GPS)

sowbot.co.uk
181 points·by Sabrees·5 mesi fa·45 comments

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Sabrees
·4 mesi fa·discuss
The repo defines the protocol it authored. Is it better not to define stuff and leave it fuzzy?

Unclear why you formed the impression this was only iOS/ Android? That is not in fact the case https://github.com/samuk/awesome-meshcore
Sabrees
·5 mesi fa·discuss
The current simulation is underdeveloped but can be found here https://github.com/samuk/caatingarobotics/tree/jazzy/src/agr...

The frame will almost certainly need more triangles
Sabrees
·5 mesi fa·discuss
Rosys (a middleware layer https://github.com/zauberzeug/rosys) has rosys.driving.Odometer and rosys.driving.Steerer it's essentially a differential drive kinematic model.

Hoping RTK dual-F9P moving-base setup (M4 in the roadmap) largely sidesteps the worst of this — NAV-RELPOSNED gives us a real heading vector independent of wheel odometry, and the robot_localisation EKF can weight RTK heavily and odometry lightly when GNSS quality is good.
Sabrees
·5 mesi fa·discuss
I did recently automate a greenhouse (heating, Hydroponics, fans, lights) it was just R&D rather than commercial so just used home assistant for it.

I did sketch out a slightly more 'professionalised' version, but haven't built it yet https://github.com/samuk/IoT-Greenhouse-Temperature-and-Irri...

I'd be pleasantly surprised if DJI had done anything open source, Ardupilot is pretty capable of course. I really want to automate the time consuming labour parts of horticulture, for me that's mostly weeding and to a lesser extent harvesting.
Sabrees
·5 mesi fa·discuss
The software does explicitly support Jetson for example, and I'm sure the stack would run on Intel if you want it to.

The Mainline kernel for this particular board is _almost_ there 6.20 or so I expect. Armbian support is good.
Sabrees
·5 mesi fa·discuss
Framweork have done the best they can within the confines of Intel licensing, still a long way from being able to fabricate it though

https://github.com/FrameworkComputer/Framework-Laptop-13/tre...

In a few years we'll all be using more open RISCV stuff of course.
Sabrees
·5 mesi fa·discuss
TBC, just trying to get the platform and mechanical weeding working for now
Sabrees
·5 mesi fa·discuss
If you can send me an open hardware Intel, or Jetson I'd happily use it.

Part of the point of this for me is to see what's possible with open hardware (down to chip level at least)
Sabrees
·5 mesi fa·discuss
Nice, thanks! looks like a good one..
Sabrees
·5 mesi fa·discuss
Payload is whatever you (or your startup) want it to be.

For me personally mechanical between row weeding is step one, then laser in-row weeding.

1. These on some linear actuators: https://www.getearthquake.com/products/fusion-drill-powered-... (they work surprisingly well)

2. Beyond that for in-row weeding a engraving laser on a Delta: https://github.com/Agroecology-Lab/Open-Weeding-Delta/tree/m...

Or if I'm feeling rich by then this third party weeder looks pretty good https://github.com/Laudando-Associates-LLC/LASER

3. For Seeding my salad crop https://reagtools.co.uk/collections/jang

4. Harvesting my salad crop https://reagtools.co.uk/products/quick-cut-greens-harvester

I live on a farm, I have sold salad commercially, these are largely tools I already use and own, just moved about by motors rather than muscles.

This is a smaller scale thing than arable. We're talking a step up from manual horticulture (which is actually what still feeds much of the world)
Sabrees
·5 mesi fa·discuss
As cheap as possible, and no cheaper than that.

In my head it's £3-£5k, so by the time it's useful probably a bit more than that.
Sabrees
·5 mesi fa·discuss
A robot that Sows seeds..
Sabrees
·5 mesi fa·discuss
Initially keep it simple; Mechanical for between row weeding. I'll probably start strapping a couple of these to some linear actuators: https://www.getearthquake.com/products/fusion-drill-powered-... (they work surprisingly well)

Beyond that for in-row weeding a engraving laser on a Delta: https://github.com/Agroecology-Lab/Open-Weeding-Delta/tree/m...

Or if I'm feeling rich by then this third party weeder looks pretty good https://github.com/Laudando-Associates-LLC/LASER
Sabrees
·5 mesi fa·discuss
Good advice on farms. I do live on a farm, so somewhat familiar with mud! Many of the worst problems are caused by moving 20ton tractors around IMHO, one of the problems small scale ag robotics may help with.

Will check out your Bno055 currently using the upstream one in Lizard

https://github.com/zauberzeug/lizard/blob/main/main/modules/... https://github.com/zauberzeug/lizard/blob/main/main/modules/...

Any review of that welcome too of course.
Sabrees
·5 mesi fa·discuss
Quite interested in running robot<>robot and robot<>Farm comms over https://reticulum.network/ but that's a side project off a side project..
Sabrees
·5 mesi fa·discuss
The web app runs locally from the robot. No cloud. Once we reach autonomy (still some way away) you shouldn't have to use that much either.
Sabrees
·5 mesi fa·discuss
Thanks, bit conflicted about it TBH, it's primarily/initially a weeding robot, although I do dream of expanding it to do harvesting, and yes potentially sowing too down the line.

Strapping something like the Jang P6 to it is probably feasible https://reagtools.co.uk/collections/jang

For the harvester it would be a bolt on for https://reagtools.co.uk/products/quick-cut-greens-harvester or maybe https://reagtools.co.uk/products/babyleaf-harvester-80cm (I grow green salads)
Sabrees
·5 mesi fa·discuss
I see your RNode and I raise you one HaLow RNode https://github.com/I-AM-ENGINEER/RNode_Halow_Firmware