Alt-BEAM Archive
Message #05414
To: beam@sgiblab.sgi.com
From: Chiu-Yuan Fang chiumanfu@home.com
Date: Sun, 25 Jul 1999 10:53:10 -0700
Subject: [alt-beam] Re: New Aquabot!!!
Looks like something out of Starwars. Excellent work Jim. Where did you get
those waterproof shafts? Are they fabricated from scratch? How waterproof are
they? Could be the topic for a tutorial...
Chiu
JVernonM@aol.com wrote:
>
> Hi all,
> I just posted another new Aquabot. Check it out.
> Jim
> http://www.geocities.com/SoHo/Exhibit/8281/beamart.html
--
Chiu-Yuan Fang
chiumanfu@home.com
ICQ=5614919
http://www.geocities.com/SouthBeach/6897/beam2.html
5415 Sun, 25 Jul 1999 15:43:08 EDT [alt-beam] Re: New Aquabot!!! beam@sgiblab.sgi.com JVernonM@aol.com In a message dated 7/25/99 2:02:06 PM Eastern Daylight Time,
chiumanfu@home.com writes:
> Where did you get
> those waterproof shafts? Are they fabricated from scratch? How
waterproof
> are
> they? Could be the topic for a tutorial...
Hi Chiu,
Yes, they are made from scratch, and are completely waterproof. Both bots
have been under water for 2 days now without any failure. Man, you should see
Proteus1 fly through the water. I can't believe how well it climbs and dives.
I would estimate that it dives a good 6-8 feet from the surface and can cover
10-15 feet before resurfacing. These are just estimates because I don't have
a pool large enough. I think I'll take it to the YMCA and do some
measurements. Yes, I am going to do a tutorial on the "Hydropod" drive unit.
You make about 20 people who have asked so far. It's actually very simple,
with all but the prop bought at Walmart. Thanks for the compliment and if I
can get the time, I think I'll enter your next contest. Think something up so
I can blow everyone's doors off :).
Jim
5416 Sun, 25 Jul 1999 13:13:04 -0700 [alt-beam] Re: Touch sensors beam@sgiblab.sgi.com Sean Rigter Yep, "wire in eye" would seem to be the simplest 2DOF sensor. It really
doesn't require a PCB but that does make it modular and easy to fix. Mounted
vertical with a small weight at the end of the wire can make a 2DOF motion or
tilt sensor (pendulum in a ring). A double conical mass on a spring in a ring
would be a 3DOF sensor (switch).
wilf
Jean auBois wrote:
> An interesting variant can be found at the top of the following page:
>
> http://www.verinet.com/~dlc/projects/botproj.htm
>
> Although they might not be quite as omnidirectional as the wire-in-a-spring
> sort, they look awfully easy to build & adjust.
>
> Z
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