Alt-BEAM Archive

Message #05998



To: beam@sgiblab.sgi.com
From: "George Rix" rix.g@bmts.com
Date: Wed, 08 Sep 1999 12:04:48 -0400
Subject: [alt-beam] Re: anuther obsticle avoider thingy


Alternately you could have it point down at an angle so that when it's on
solid ground your IR PDs get the signal, but when it's about to step off a
cliff, it says Hey! and switches from normal walking to reverse.
Any thoughts (and I forgot to slap you over the head)
Signing off,
Rob Rix

=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B=8B
Life is like the theatre, but it's lucky anyone can survive with everyone
ad-libbing their lines and the occasional gunfight.

----------
>From: SG
>To: beam@sgiblab.sgi.com
>Subject: anuther obsticle avoider thingy
>Date: Thu, Aug 19, 1999, 11:06 PM
>

> so, beam is shot out at an angle, wall or object bends the
> angle to hit the detector.
> (now why didn't i just say that to start with?)
> angle and detector can be adjusted to determine distance
> that obsticle is to be avoided.
> I'm not sure, but i don't think the surface to be avoided
> needs to be THAT reflective either... but probaly depends
> on the IR beam. (ya know those little keychain laser pointers
> come to mind! ...but thats not IR now, is it?) i dunno.
> thats for the techno gurus to figure out.



5999 Wed, 8 Sep 1999 22:36:49 EDT [alt-beam] ground? beam@corp.sgi.com Bumper314@aol.com hello...i was wondering if anyone knows the difference between digital
ground, auido ground, and ground? thanks

steve



6000 Wed, 8 Sep 1999 22:16:48 -0500 [alt-beam] Re: ground? "jclark76" > -----Original Message-----
> From: owner-beam@sgiblab.sgi.com [mailto:owner-beam@sgiblab.sgi.com]On
> Behalf Of Bumper314@aol.com
> Sent: Wednesday, September 08, 1999 9:37 PM
> To: beam@corp.sgi.com
> Subject: ground?
>
>
> hello...i was wondering if anyone knows the difference between digital
> ground, auido ground, and ground? thanks


I don't know What *IS* the...nevermind lame joke.

Ground is a reference point. There is circuit ground, chassis ground, ground
ground(A BIG pole driven into the ground. good for the odd lightning bolt)
but it is normally a common point for every thing. Ground doesn't have to be
0 volts. It could be just a "Low" compared to the rest of the circuit

-_-_-_-_-_-_
A wise man once told me, "How did you get past the dogs!?!"

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