Subject:
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Fw: Bumper Ideas Needed
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 4 Dec 1998 18:38:46 GMT
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Original-From:
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Tom Rowton <TROWTON@BROADCASTnomorespam.COM>
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Viewed:
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2514 times
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I think I have an idea (rough) that would allow 360 and give directional. It
may ramble a bit, but I'll try to keep it brief.
<ramble>
Use whatever lego bit's you like to fully encircle the bot and have it on
some sort of fulcrum-like apparatus, so that on impact, the whole circle
moves like a pendulum.
Either at the top or bottom, the 'see-saw' action drives a gear that drives
something to depress the touch sensor _and_ allow for other 'outputs' such
as transmission reversal, or another sensor activation, or whatever.
</ramble>
I could provide a rough sketch offline, or ramble more if anyone likes the
basic idea and wants to collaborate further.
trowt
-----Original Message-----
From: Haines, Corey <Corey_Haines@cmvc.com>
To: Lego-Robotics <lego-robotics@crynwr.com>
Date: Friday, December 04, 1998 12:30 PM
Subject: RE: Bumper Ideas Needed
One idea I was having was something like a ring that could shrink and
grow, sort of like have four sections, two of which can slide into the
other two, then, no matter what part you press on now, the whole ring
compresses into a smaller diameter. You could then attach a single
sensor somewhere along the ring, whenever and wherever there is a bump,
the ring would compress, the touch sensor would trigger. Of course, this
wouldn't give any direction information, but it would nonetheless need
only one sensor.
-Corey
> -----Original Message-----
> From: Laurentino Martins [mailto:lmartins@marktest.pt]
> Sent: Friday, December 04, 1998 1:10 PM
> To: Lego-Robotics
> Subject: Bumper Ideas Needed
>
>
> Hi
>
> I've been the working in making a flexible bumper using only
> one switch for my CyberMaster and after constructing about 4
> or 5 prototypes I've found out that after all I don't know
> how to make a decent flexible-and-with-lots-of-travel bumper.
> I need such a bumper for detecting impacts ahead of the real
> impact so I can make a soft stop before impacting the object.
> Also, the bumper should be able to read impacts with a wide
> angle (45 degrees).
>
> Since it seems bumpers are one of those things everybody
> needs and LEGO has forgotten to create, I think we could
> create a mini-contest on how to create the best bumper with
> standard LEGO parts.
>
> By the way, anyone have any mechanical idea how to make a
> small round bumper that reacts to 360 degrees impacts (I
> mean, any horizontal impact around the sensor) and using only
> one sensor?
>
>
> Laurentino Martins
>
> [lau@mail.telepac.pt]
> [http://www.terravista.pt/Enseada/2808/]
>
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Message has 1 Reply:
 | | Re: Fw: Bumper Ideas Needed
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| The idea of the pendulum if great, and it's even easier that you imagined it. Imagine the pendulum is an inverted cone, much like the things they use in the buildings to see if they are straight (I don't know the name in English, sorry). If you put (...) (26 years ago, 4-Dec-98, to lugnet.robotics)
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