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Subject: 
Re: LEGO MindStroms 2.0: Alternative transmission techniques
Newsgroups: 
lugnet.robotics
Date: 
Sun, 20 Oct 2002 11:51:07 GMT
Viewed: 
2365 times
  
lego-robotics@crynwr.com (Steve Baker) writes:
> 
> 1) Communications.  The RCX uses IR - which is pretty much line-of-sight
>     only - so as soon as your robot drives under a table or around a
>     corner, it'll have to navigate by itself, record all the data it
>     collects and autonomously return to the PC to return results.

Or forbid tables etc. and communicate by reflection on the ceiling.

> 2) Navigation.  The problem of knowing where the robot is.  There have
>     been many long discussions on this topic on this mailing list - and
>     the bottom line is that NOBODY has a good solution.

Right.  Some markings on the floor can make it easier.

> 3) JAVA.  The Java implementation for RCX runs all the software on the
>     PC and just sends commands to the RCX to turn on motors, read
>     sensors, etc.  As has been pointed out, your RCX will be out of
>     communication with the PC pretty much all of the time - so this
>     isn't going to work.  This would have to be done in NQC or (more
>     likely) BrickOS/GCC.

I can't imagine you never heard of leJOS (http://www.lejos.org),
which definitely runs Java on the RCX.

> This is an EXTREMELY difficult problem.

I'd also suggest to simplify a bit first,
and make it more difficult as you go.

Jürgen

--
Jürgen Stuber <stuber@loria.fr>
http://www.loria.fr/~stuber/



Message is in Reply To:
  Re: LEGO MindStroms 2.0: Alternative transmission techniques
 
(...) Well, there are MANY difficult problems here. 1) Communications. The RCX uses IR - which is pretty much line-of-sight only - so as soon as your robot drives under a table or around a corner, it'll have to navigate by itself, record all the (...) (24 years ago, 19-Oct-02, to lugnet.robotics)

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