Subject:
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Re: My Lego Flexpicker Video on YouTube
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Newsgroups:
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lugnet.robotics.nxt
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Date:
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Tue, 17 Feb 2009 06:48:45 GMT
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Viewed:
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29427 times
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In lugnet.robotics.nxt, Chris Shepherd wrote:
> In lugnet.robotics.nxt, Eric Sophie wrote:
> > In lugnet.robotics.nxt, Iain Hendry wrote:
> > > In lugnet.robotics.nxt, Eric Sophie wrote:
> > >
> > > > Pffff, oh man, that is so awesome. The only other flex picker I saw was in Brick
> > > > Fest 2003:
> > >
> > > I've made 3-4 different versions as well. I unfortunately don't have any photos
> > > of the most recent version.
> > >
> > > http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1111600
> > >
> > > http://www.brickshelf.com/cgi-bin/gallery.cgi?f=118118
> >
> > Hey wow, I like your solution as well! Well done and very straight forward.
> > Seeing yours helped me to understand these machines a bit more too, thanks!
> >
> > Ugg so many cool parts, all those ball joint control arms, very nice!
> >
> > > However my efforts have been more focused on speed than specific assembly tasks.
> > > They are fantastic robots to work with. We used an ABB IRB340 for testing and
> > > sorting milk samples in viles at high speed for a customer.
> >
> > I see these machines work very quickly indeed!
> >
> > > -Iain
>
> This one can run much faster. I am running the motors at 35%. I had to choose
> between realism and speed. If it goes much faster, when it stops suddenly, the
> loose joints cause it to swing and sway. I would have to put about a one second
> pause to let it stop before the next move. It is not pretty.
35%. That shows how precise these systems are. I bet it would "whip" around
higher than that. Additional gearing down would just make it bigger.
I think that pause is also advantageous in that, you get a chance to hear and or
realize all the cool sounds your Flexpicker makes! That video is so great!
> Plus, the center of gravity of the thing is really high and it is moving all the
> time, so the whole frame sways a lot too. I spent a significant time developing
> a rigid frame.
Ahh I hear that! Good work.
> Chris
- Eric
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Message is in Reply To:
 | | Re: My Lego Flexpicker Video on YouTube
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| (...) This one can run much faster. I am running the motors at 35%. I had to choose between realism and speed. If it goes much faster, when it stops suddenly, the loose joints cause it to swing and sway. I would have to put about a one second pause (...) (18 years ago, 14-Feb-09, to lugnet.robotics.nxt)
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