If all goes according to expectations, the ultrasound sensor will
do three out of the six (the hard things: concrete, asphalt, gravel),
and maybe even distinguish the soft mulch at the opposite end of the
scale. That's pretty good going for a sensor that costs pence.
> Thats why I'm so interested in 'position' technology.
As I have said before, I think a rough idea of position is important
for keeping track of which areas are due for a visit. But I don't
think it's likely we can make our position sensors accurate enough
to use them for routine boundary definition. It will be useful to have
a belt-and-braces check on the other boundary sensors though.
> I'd imagined leading mowbot around the yard once and saying,
> don't ever mow this (its my garden) or this (it's my driveway)
> or this (they're my wife's flowers) or anything past here
> (that's my neighbor's yard).
This might still be possible, but instead of remembering *where*
it is, Mowbot could be learning what driveway and flowers look like.
Robin.
-- Copyright (C) 1996 R.M.O'Leary <robin nospam at acm.org> All rights reserved. For licence to copy, see http://dragon.swansea.linux.org.uk/mowbot/