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Subject: 
Re: Multi-RCX Dreaming
Newsgroups: 
lugnet.robotics
Date: 
Thu, 17 Jun 1999 20:10:11 GMT
Original-From: 
Luis Villa <liv@duke.*nomorespam*edu>
Viewed: 
2796 times
  
On Thu, 17 Jun 1999, Jonathan Woodward wrote:

> At 07:31 PM 6/17/99 GMT, Luis Villa wrote:
> > 1) Has anyone actually gotten two RCXs to communicate reliably via IR?
> > (LNP folk (if there actually are any) are solicited here!)
> 
>     -Lots of people (not myself, though I do own 2 RCXs now).

I should have clarified on this one: in LegOS :) Windows is, for better or
for worse, not an option.

> > 2) What about other forms of communications? I know several people have
> > used two RCXs to construct bots of various forms- have they communicated
> > in any way? Or have they operated independently?
> 
>     -Besides the built-in "message" function, there are several other ways
> RCXs could communicate.  RCX A could shine a light into RCX B's light
> sensor.  RCX A could start a motor that would tap RCX B's touch sensor.

I was thinking of this. I wondered (more for curiousity's sake) whether
or not this has actually been done.

> For an extreme example, RCX A could run a motor, monitor its rotation with
> a rotation sensor also connected to RCX A, and have another rotation
> sensor, connected to RCX B, on the same axle.  It would certainly be an
> interesting way to transmit data.

Hmm... That would be a really interesting one... rotation sensors will
also be in plentiful supply.

> > 3) The big one: What would you do with six RCXs?
> 
>     -Me personally?  My interest would be purely software: Develop a
> protocol to allow any two RCXs in the group to transmit arbitrary strings
> of bytes to each other unambiguously, without the others getting confused.

That was what the LNP (LegOS Network Protocol, which I guess was discussed
on the LegOS list) supposedly had as a goal. I'm afraid that it appears to
have died. I may get back into it, I suppose, but I have to focus on other
stuff at the moment and have absolutely zero messaging protocol
experience.

-Luis

#######################################################################

     Profanity is the one language that all programmers understand.
                  -Anonymous

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



Message has 1 Reply:
  Re: Multi-RCX Dreaming
 
(...) [ ... ] (...) Well, it hasn't actually died, just slowed down a bit. If you look on lugnet.robotics.rcx.legos there has been some very low-level talk recently. I haven't done *any* lego stuff recently, but, when I do I'll likely be doing (...) (27 years ago, 18-Jun-99, to lugnet.robotics)

Message is in Reply To:
  Re: Multi-RCX Dreaming
 
(...) -Lots of people (not myself, though I do own 2 RCXs now). (...) -Besides the built-in "message" function, there are several other ways RCXs could communicate. RCX A could shine a light into RCX B's light sensor. RCX A could start a motor that (...) (27 years ago, 17-Jun-99, to lugnet.robotics)

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