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Subject: 
As promised - Mecha using RCX with MacNQC - Draft 1.
Newsgroups: 
lugnet.build.mecha, lugnet.loc.au, lugnet.robotics.rcx
Date: 
Sat, 11 Aug 2001 01:09:50 GMT
Viewed: 
46 times
  
Hi, well some weeks ago I promised that I'd begin a project of developing a
Mech incorporating the RCX unit, some motors and sensors.

Here is my very first attempt at a minifig scale Mech:

http://www.brickshelf.com/cgi-bin/gallery.cgi?m=brickfield

The RCX is programmed using MacNQC and at this stage only utilises one motor
for the motion (non COG [centre of gravity]), one Micro Motor to rotate the
upper body (head), and two lights at front for effect only.

The actual bi-ped mechanism is based on that designed by Joe Nagata (Thanks
Joe!) in his Idea book.

At this stage it is:
a) too heavy (strain on single motor)
b) too weak (falls apart from shaking motion)
c) not agile (only operates on flat surface)
d) top too heavy - micro motor is under strain to turn/rotate upper body due
to weight and weakness of single point holding it up.

but Hey! it works.

What to do next?

a) add touch sensors
b) add light sensor to upper body (head).
c) add sound generator unit.
d) perhaps utilise pneumatics?

So, what do you think? Suggestions, criticisms?

I know it's early days yet - but if there's anyone at LEGO that see's this
and wants to offer me a job just drop me a line :-) (doesn't hurt to ask!)

Kind Regards,

Ed Cox.
ecox@bigpond.net.au



Message has 2 Replies:
  Re: As promised - Mecha using RCX with MacNQC - Draft 1.
 
(...) I like the design, but as with most RCX-based walkers, it looks, well, 'clunky'. I realize this can't be helped considering the nature of what it is you are working with. I, too, have been working on a walker of this nature and have met with (...) (23 years ago, 11-Aug-01, to lugnet.build.mecha, lugnet.loc.au, lugnet.robotics.rcx)
  Re: As promised - Mecha using RCX with MacNQC - Draft 1.
 
I think you're off to a good start! You mention some problems that I think can be overcome, others I'm not sure about... but I'll offer my two cents anyway... (...) a) what's your gear reduction ratio? I see a worm gear in there, which is about the (...) (23 years ago, 11-Aug-01, to lugnet.build.mecha, lugnet.loc.au, lugnet.robotics.rcx)

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