Re: [mowbot] mowbot

Dave Everett (Deverett nospam at
Thu, 26 Sep 1996 08:28:31 +1000

Ron Woodward wrote:
> >It (Sonar) was not intended for measuring the height of the grass. It was
> >intended to
> >detect the difference between soft surfaces, like grass, and hard
> >surfaces, like
> >concrete pathways etc.
> What difference does it make if its concrete or mowed grass? We don't want
> the robot to speend much time on eather.As soon as it detects the absance of
> mowable (tall) grass it changes direction to go find some.

Often the boundary area of grass is concrete, also what do we do when
the battery gets low? The robot may have to travel on concrete. The only
thing this robot will be able to rely on is it's sensors, the richer the
data it gathers, the better it's behaviours can be.

This sensor hasn't become part of the design, it is an EXPERIMENT to
determine the suitability for this type of application.

Dave Everett                                Email: deverett nospam at
(c) 1996 - Copyright remains with the author unless explicitly stated