Setting up a wire-free robot mower

The old robot mower installation involved burying a perimeter wire around the entire lawn and repairing it every time an aerator or a spade found it. Wire-free navigation removes that job completely, and replaces it with three decisions you make once and live with.

What setup actually involves now

Before you start: the two published limits

Both are hard, and both are worth confirming before anything is unboxed.

Step one: siting the base station

This is the decision that most affects whether the system works well, and it is the one people rush.

1. Clear sky above the reference point. RTK positioning depends on satellite reception. A base under dense canopy or tight against a two-storey wall is the most likely source of trouble.
2. Mains power within reach, routed so the cable is not across a mowing path.
3. Level, firm ground so the docking approach is consistent.
4. Out of the mowing line, ideally at an edge, so the mower is not navigating around its own dock all day.
5. Somewhere you can reach it. You will be lifting a 24 lb machine on and off it more often in the first fortnight than afterwards.

Step two: the boundary

Drawing a boundary in an app is faster than burying wire and is easier to get subtly wrong, because there is nothing physical stopping the machine at the line.

• Leave margin at hard edges. Walls, curbs and fences want a little clearance; you will trim those with a string trimmer regardless.
• Leave generous margin at drops. Ponds, retaining walls, steps and open driveways deserve more clearance than looks necessary.
• Exclude beds and soft planting explicitly rather than relying on the mower to notice them.
• Exclude anything above 16 degrees, even if it is inside the lawn. The limit is a machine limit, not a boundary preference.
• Walk it again after the first week. The places it gets stuck are never the places you predicted.

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Step three: height and schedule

A robot mower is the one machine where frequent light cutting is the design intent rather than a discipline, which lines up neatly with the extension guidance.

On height, Segway publishes 2 to 3.6 inches. University of Minnesota Extension recommends maintaining a typical residential lawn at 3 inches or higher and removing no more than one third of the leaf tissue per cut, so set 3 inches or above and let frequency do the rest. The reasoning is in the mowing height guide.

Living with it: the first month

What you still need

A robot mower does not finish a garden. It cuts the open lawn and nothing else, so the rest of the kit stays relevant: a string trimmer for edges and around obstacles, an edger if you want a defined line, and a blower for hard surfaces.

It also does not handle a heavy autumn leaf fall. That remains a mower-and-blower job — the extension-backed method is in best mower for mulching leaves.

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What we cannot tell you

We have not installed or run this machine. Segway publishes no setup time, no positioning accuracy figure, no minimum satellite requirement and no obstacle-detection specification, so anything specific about how well the navigation works in practice would be invented.

What is published: 1/8 acre, 7.1 inches, 2 to 3.6 inches of cut height, 60 minutes against 90, 16 degrees, 58 dB(A) and 24 lb. Design the installation inside those and the rest is boundary drawing.