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Subject: 
RE: Mindstorm Robotwars style competition in Southern California/Los Angesles area?
Newsgroups: 
lugnet.robotics
Date: 
Tue, 12 Jan 1999 21:04:22 GMT
Original-From: 
Tim McSweeney <TIM@AMS.CO.NZnomorespam>
Viewed: 
1215 times
  
This raised an interesting thought in my head.  Suppose you allow teams of
robots to compete, Communication would be essential for both teams, so how
would you filter out hostile messages from you own?  The easiest way would
be to force the teams to adhere to a standard, say 4bit id, 4 bits data per
message, you could then ignore messages with the wrong id.  It's more
interesting if you allow a free for all.

One thought was that you could usee say 4 bits hashcode, 4 bits data, The
RCX will only accept the message if the hashcode is correct for the data
according to some predefined (secret function)

Another option would be to start with an initial code then the next code is
defined by running the current code through some function.  Messages are
only accepted if the code matches the current one, when a message is
accepted the code is advanced.  This has problems with keeping multiple
robots in sync of course.

Are these essentially the same? what are some other options?

Cheers
Tim

-----Original Message-----
From: news@lugnet.com [mailto:news@lugnet.com]On Behalf Of Mark
Tarrabain
Sent: Wednesday, January 13, 1999 9:40 AM
To: lego-robotics@crynwr.com
Subject: Re: Mindstorm Robotwars style competition in Southern
California/Los Angesles area?


You know, I really believe that disallowing IR is a bad idea.

Although I would agree that using the IR to shut down or
disable opponents is a Bad
Thing(tm), and should result in disqualification, IR usage
that can be justifiably
used in a non-offensive manner should really be allowed.

I can think of two examples right off the top of my head
where this could be used:

1) Using IR to function as sonar.
2) In the Freeweight category, where there is no (current)
limit on what can be put
into a robot, 2 RCX's could theoretically be used in a single
robot.  They should
be allowed to use IR to communicate.
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics


--
Did you check the web site first?: http://www.crynwr.com/lego-robotics



Message has 1 Reply:
  Re: Mindstorm Robotwars style competition in Southern California/Los Angesles area?
 
What may be the most logical thing to do is simply simulate serial communication between units. That is, send a stream of bytes, one after the other, to the other unit. Of course, for each byte received, the receiver should send an acknowledgment, (...) (26 years ago, 13-Jan-99, to lugnet.robotics)

Message is in Reply To:
  Re: Mindstorm Robotwars style competition in Southern California/Los Angesles area?
 
You know, I really believe that disallowing IR is a bad idea. Although I would agree that using the IR to shut down or disable opponents is a Bad Thing(tm), and should result in disqualification, IR usage that can be justifiably used in a (...) (26 years ago, 12-Jan-99, to lugnet.robotics)

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