Alt-BEAM Archive
Message #08024
To: beam@sgiblab.sgi.com
From: "Timothy Flytcher" flytch@hotmail.com
Date: Fri, 26 Nov 1999 00:29:03 PST
Subject: [alt-beam] Re: motion powered metal detector...
>I don't really know how mines work but I would suppose if your close
>enough to be able to detect it with a metal detector, you're close
>enough to set it off ;) Maybe that's the idea? ;))
>
>I'm sure if Tilden's bots can set one off a person could very easily
The common mine is set of by pressure... They are about 2.5 inches in
diameter and 1 inch tall ... they contain a pressure switch that becomes
live after deployment(usually by aircraft)... only takes ~2.5 pounds of
pressure to set them off... so going over the top of them with a detector
doesn't apply any pressure...
And yes some do go off due to heavy rain, hail, or just cold...
Timothy...
______________________________________________________
8025 Fri, 26 Nov 1999 09:18:08 +0800 Re: photowalker video & Quadrapod/Hexapod II legs Richard Caudle
> Your local hardware store should have Lexan sheet in stock.
>
> Richard (the elder)
>
>
> ----- Original Message -----
> From: Richard Piotter
> To:
> Sent: Thursday, November 25, 1999 9:18 AM
> Subject: Re: photowalker video & Quadrapod/Hexapod II legs
>
>
> > Sounds interesting! Where can I order this material? I have to travel
> > out of town just to get plexiglass!!! I'm considering using a combo of
> > transparent material and the yellow sheets from Lynxmotion. I've worked
> > with Plexiglass and it is a little af a pain to mess with. If I can find
> > some, I'll have to try this Lexan material. Thank you!
> >
> > Of course, with the new saw, I might try to go with a few metal pieces,
> > if I can get the metal and the blades for it!
> >
> > Richard Caudle wrote:
> > >
> > > > > >If anyone knows anything about the Lynxmotion design, send it on
> over!
> > > > > >$200 is too much for me, and if I can do the same with less than
> $20 of
> > > > > >Plexiglass (CLEAR!!!), then I think it's work the extra work and
> > > designing.
> > >
> > > Don't use Plexiglass! It's too brittle and hard to work with. Lexan
on
> the
> > > other hand is a miracle substance. You can even bend it without
> heating
> > > it! Just leave the paper on it until after you've drilled and bent
it!
> > >
> > > Richard
> >
> > --
> >
> >
> > Richard Piotter
> > richfile@rconnect.com
> >
> > The Richfiles Robotics & TI web page:
> > http://richfiles.calc.org
> >
> > For the BEAM Robotics list:
> > BEAM Robotics Tek FAQ
> > http://people.ne.mediaone.net/bushbo/beam/FAQ.html
> >
Home