Re: [mowbot] Ultrasonic hardness measurement

robin nospam at
Thu, 26 Sep 1996 02:13:35 +0100

Dave Everett <Deverett nospam at> wrote:
> I set up an experimental breadboard to test the possibility of
> differentiating between grass and concrete.
Well done. I look forward to the results.

Remember to test echos from a hard surface at an angle too.
I suspect there will be enough scattering off hard facets for this
to be a non-problem, but best check.


R.M.O'Leary <robin nospam at> +44 973 310035  P.O. Box 20, Swansea SA2 8YB, U.K.