Subject:
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Re: Mindstorms at JavaOne
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 18 Jun 1999 00:52:59 GMT
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Original-From:
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David Kadansky <davidk@IHATESPAMpobox.com>
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Viewed:
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1853 times
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Since I wrote this, I've seen the setup in person.
The Palm V's are connected serially to a Sun PC which broadcasts IR from a
standard Lego IR tower to the tanks' combat arena.
The messages sent to the tanks use 3 bits for the tank id and 5 bits for
encoding commands. The PC broadcasts to each RCX in turn. I imagine that the
RCX responds with its status when polled.
Each tank has two motors driving treads. Two rotation sensors report back to
the PC to track the tank's movements.
A third motor turns a cam that fires the weapon, a finger-sized laser
pointer. A light sensor detects laser hits from enemy tanks.
I counted four Palms and four tanks. Unfortunately, I won't be returning
Friday when the conference attendees get to play.
David Kadansky wrote:
>
> Ok, I don't think this is too far off-topic.
>
> At the JavaOne keynote presentation this morning in S.F., James Gosling and
> Kay Neuenhofen of Sun Microsystems demonstrated Mindstorm tanks controlled
> from Palm V's running KJava aka MicroJava.
>
> They also said that the Mindstorms and the Palms were proxied into Jini
> devices by a Sparcstation server.
>
> You can watch a webcast of the presentation at
> www.graham.com/broadcasts/sun/JavaOne-99/keynote1/keynote1.html
>
> The Mindstorms segment runs from 1:30:18 thru 1:35:00 (that's 90 minutes
> from the start), so you might want to fast-forward a bit.
>
> ---------------------------------------------
>
> Here's an excerpt (at 1:32:40):
>
> Neuenhofen: The tanks come up first and they implement a controllable
> interface and the Palms are then looking for something that implements a
> controllable interface and they then start controlling the tanks. So it's a
> spontaneous creation of a Jini federation.
>
> Gosling: The tanks themselves are actually not running Java, they're being
> proxied.
>
> Kay: The tanks are too small at the moment to run Java so they run their own
> proprietary Lego operating system, and ...
>
> (crowd laughs)
>
> They are.
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message is in Reply To:
 | | Mindstorms at JavaOne
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| Ok, I don't think this is too far off-topic. At the JavaOne keynote presentation this morning in S.F., James Gosling and Kay Neuenhofen of Sun Microsystems demonstrated Mindstorm tanks controlled from Palm V's running KJava aka MicroJava. They also (...) (25 years ago, 16-Jun-99, to lugnet.robotics)
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