> no not funny,
>
> i don't think that any of us (with lawns) haven't thought of this project. i
> see they have a link to the 2x compass. i read the specs and didn't feel
> that this device was accurate enough for a guidance system. counting ticks
> on the wheel revolutions won't work either because the ground is not flat. i
> saw a robot show on tv where they used dual gps receivers about the size of
> a pack of cigeretts. does anyone know who makes devices like this. or how
> would you send a robot 200 feet (70 meters) down a property line without
> mowing over your neighbors flower garden?
>
To get the kind of accuracy you need I think you would have to have a
differental GPS setup
which is a bit pricey to subscribe to. Radio Elelctronics had a robot
mower a couple of years ago. It detected already cut grass, therefore
you had to manually mow an outline first.