CAIBI ASSESSMENT

OpenMower

A conversion that replaces the electronics in compatible robot mowers with GPS-guided, map-aware open hardware and software.

CAIBI VERDICTBUILD FOR THE EXPERIENCE

It can turn a compatible basic mower into a much more capable open platform. The case is strongest if you value control, mapping and modification rather than simply needing the grass cut.

Build with AI See the build I built this

AI CAN HELP

Useful work to hand to AI

Configuration help
Code investigation
Diagnostics

AI CAN'T DO

The physical boundary

Modify the donor mower safely
Make the electrical and mechanical connections inside the machine
Install and prove the positioning hardware in the real garden
Test emergency behaviour, obstacle handling and unattended operation
Take responsibility for the safety consequences of a bad installation

BUILD WITH AI

Start with the project, not a blank prompt.

The CAIBI build pack gives an AI assistant the source, the known constraints, the useful AI work and the physical boundary. It is designed to help you move faster without pretending the AI has built the thing for you.

Preview the full build brief

I want to build OpenMower.

Source project: https://github.com/ClemensElflein/OpenMower

Use the source as the authority. Do not invent parts, dimensions, prices or capabilities that are not published.

AI can help with: Configuration help, Code investigation, Diagnostics.
AI cannot physically do: Modify the donor mower safely, Make the electrical and mechanical connections inside the machine, Install and prove the positioning hardware in the real garden, Test emergency behaviour, obstacle handling and unattended operation, Take responsibility for the safety consequences of a bad installation.
Tools and capabilities involved: Electronics, Linux, Mechanical work.
CAIBI's main concern: This is a substantial machine conversion involving electronics, Linux, mechanical work and outdoor safety. AI does not remove the consequences of getting those parts wrong.

Start by checking the source, confirming the current parts and build instructions, then give me a staged plan. Clearly separate source facts from your suggestions. Stop and ask me to verify anything that depends on physical fit, wiring, calibration or safety.

THE BUILD

How it actually comes together

Check the source ↗

YOU

Check mower compatibility

Confirm the donor mower is supported before buying conversion hardware. The project documents compatible mower families and model specific hardware.

YOU

Understand the architecture

Read the system architecture and step-by-step documentation before modifying the mower. This is not a sensible project to discover by trial and error.

YOU

Order the conversion hardware

Source the mainboard, positioning hardware and other components for the selected mower route.

YOU

Modify and wire the mower

Open the donor machine, replace or connect electronics and complete the physical conversion. This is the highest consequence part of the build.

AI + YOU

Install and configure software

Install the OpenMower software stack and configure the hardware. AI can help navigate documentation and diagnose software issues, but should not substitute for safe hardware work.

YOU

Map and test safely

Record mowing areas, verify positioning, emergency behaviour, obstacle handling and repeatability before unattended use.

WHAT YOU NEED

Key components

Compatible robotic mower
OpenMower mainboard or supported hardware route
RTK capable positioning setup
OpenMower OS and ROS software stack
Sensors, wiring and mower specific conversion hardware

AFTER THE FIRST BUILD

Ways to take it further

Different compatible mower platformsCustom mowing areasObstacle sensing changesApplication and navigation modifications

OTHER WAYS TO GET THERE

You do not have to follow one route.

ORIGINAL BUILDFollow the creator route

Use the published source, files and instructions as the baseline.

↗AI ASSISTEDUse the CAIBI build pack

Start from the source with prompts that keep the AI inside the verified build information.

→ALTERNATIVE PROJECTSesame Robot

A printable ESP32 quadruped using eight servos, an expressive OLED face and open animation/control software.

→

REVIEWED RESOURCES

Useful places beyond the main source

GITHUB REPOopen_mower_ros

ROS navigation, planning and state machine used by the OpenMower ecosystem.

↗GITHUB REPOOpenMowerOS

Operating system image used by the current OpenMower software route.

↗GITHUB REPOhw-openmower-universal

Universal mainboard hardware repository linked by the main OpenMower project.

↗DOCSOpenMower build documentation

Current step-by-step route recommended by the project for new builders.

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MADE BY PEOPLE

Real builds belong here.

No reviewed builder listings yet

When people submit completed builds, this section can link to their build notes, repo, printable files, shop or finished version. CAIBI does not take payment or insert itself into the sale.

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SOURCE · CAIBI · BUILDERS

What supports the verdict

SOURCEClemens Elflein

Source available with current build documentation

The source describes a hardware shopping list of about €700 excluding the mower and RTK base station.
The creator describes the build as requiring intermediate electronics, Linux and mechanical skills and typically taking a weekend for a YardForce class mower.
The project converts compatible robotic mowers into GPS guided, map aware machines.
The source explicitly warns builders to understand what they are doing and highlights safety, legal and liability considerations.

Open source ↗

CAIBIBUILD FOR THE EXPERIENCE

It can turn a compatible basic mower into a much more capable open platform. The case is strongest if you value control, mapping and modification rather than simply needing the grass cut.

Evidence: Strong
Biggest challenge: This is a substantial machine conversion involving electronics, Linux, mechanical work and outdoor safety. AI does not remove the consequences of getting those parts wrong.

BUILDERSNo published reports yet

Actual time, cost, changes and outcomes from reviewed builds will appear here.

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BUILT IT?

Tell us what actually happened.

Your result can improve the assessment and, if you choose, link people to your public build or listing.

What worked and what changed
Actual time and cost
Public build or repo link
Optional maker or sales listing