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Subject: 
Re: Not totally satisfied with the Lego Mindstorm concept: Mathematical variables and direct connection PC/mechanical device
Newsgroups: 
lugnet.robotics
Date: 
Wed, 24 Apr 2002 14:26:32 GMT
Original-From: 
Steve Baker <sjbaker1@&AvoidSpam&airmail.net>
Reply-To: 
sjbaker1@airmail.netSAYNOTOSPAM
Viewed: 
1783 times
  
Stig Anders Mastad wrote:

> 2. I can't program the RCX to make and manipulate mathematical
> variables (f.ex: X=1, X=X+1).

You need to download the free program "NQC" (which stands for 'Not Quite C').

It's a compiler for a subset of the C programming language for the RCX - and
with it you can certainly program the RCX to do things with variables.

> One of the first things I wanted to make, was a car driving around, counting
> how far it has driven, identifying obstacles, memorising all these information
> and having them in mind the next time it was out driving: to observe, remember
> and act "intelligent".

In principle this is possible - but there are quite a few challenges along the
way.  Accurate navigation is quite difficult - but the difficulties are mechanical
in nature and not software limitations.

> QUESTIONS
> ad 1. Can I program directly to the ports by using JAVA or should I learn another language?
> - please send links and information.

There is a JAVA implementation for RCX - check out "LeJOS"

> ad 2. I've seen some internet pages for programming the RCX in languages
> similar to C (NQC) and Java (http://lejos.sourceforge.net/) . From what
> I understand, they do not operate with mathematical variable.

Sure they do.

> - I'm I wrong or not? I'd like to make my LM-set creations more
> "intelligent" by using mathematical variables. Any help willl do!

I think you should learn NQC.

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Message is in Reply To:
  Not totally satisfied with the Lego Mindstorm concept: Mathematical variables and direct connection PC/mechanical device
 
Hi group! I got some questions. For those not interested in my pre-LegoMindstorm history, go diretly to THE POINTS HISTORY: I learned to program in Basic in 1985 on a Commandore Vic20 and was fantacising about connecting mechanical items to my (...) (25 years ago, 24-Apr-02, to lugnet.robotics)

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