Subject:
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Re: NXT Synchro Drive
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 7 Dec 2006 15:01:24 GMT
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Viewed:
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8287 times
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On Dec 7, 2006, at 1:48 PM, Chris Phillips wrote:
> In lugnet.robotics, Rich Thompson wrote:
> > On Dec 7, 2006, at 7:03 AM, Chris Phillips wrote:
> >
> > > In lugnet.robotics, Rich Thompson wrote:
> > > > I have been playing with the turntable from the NXT kit to try and
> > > > build a synchro drive train. It got a bit complicated but it
> > > > works. I
> > > > posted a video at my blog:
> > > >
> > > > <http://www.robotthoughts.com/index.php/lego/archives/2006/12/06/
> > > > lego-mindstorms-nxt-synchro-drive/>
> > > >
> > > > or just:
> > > >
> > > > <http://www.robotthoughts.com/>
> > > >
> > > > Have Fun!
> > >
> > > This looks pretty cool, and I can well respect any attempt to
> > > design a cool
> > > device out of LEGO, but I wonder how necessary something like this
> > > is with the
> > > NXT?
> > >
> > > Just wondering...
> >
> >
> > You are touching on the exact reason I am playing with the synchro
> > drive platform. Previously, to maintain "sync" between the rotation
> > of different wheels I had to use locked gearing or a chain. you can
> > see examples here:
> >
> > http://www.robotthoughts.com/index.php/lego/archives/2000/07/20/
> > astro-
> > droid-synchro-drive/
> >
> > and here:
> >
> > http://www.robotthoughts.com/index.php/lego/archives/2000/07/20/
> > synchro-drive-with-360-degree-bumper/
> >
> > By working with NXT motors, I hope to not have that design
> > requirement.
>
> Yes, I think the new capabilities of the NXT are going to give us
> all a new
> perspective on the challenges we've taken on in the past.
>
> > As to why this platform, I like the zero degree turn radius and the
> > design is fun to watch when the full synchro drive is in motion. See
> > the videos in the robots above. Once you understand the synchro
> > drive, it really opens up some of the robotic possibilities of the
> > turntable.
>
> Cool! There are other benefits to synchro drive as well, I
> suppose, such as the
> ability to change direction without changing the orientation of the
> chassis.
> It's always good to see someone continuing to push the envelope.
>
> You're probably already aware of these other designs, but I'll add
> the links
> here for (my own) future reference:
>
> http://www.restena.lu/convict/Jeunes/SynchroDrive.htm
> http://www.visi.com/~dc/synchro/index.htm
>
> By the way, your synchro drive page is already the #3 result on
> google!
Good links! I love those original synchro drive sites. They inspired
me originally and looking at them again reminds me of a few ideas I
have let slide from my brain.
At the risk of this looking like link pimpage, I offered one
improvement on those original designs to increase the strength of the
wheel rotation gears. You can see that improvement here:
http://www.robotthoughts.com/index.php/lego/archives/2001/03/20/
stronger-synchro-drive/
Crazily enough, my blog is so old and linked to that many posts on
less important keywords go right to the top.
I am getting back into the robotics side after a few years of just
noodling around with my original RCX sets without much impact. The
NXT has re-energized me a bit but I'll need to get rid of this pesky
need for money soon :)
Have Fun!
Rich
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Message is in Reply To:
 | | Re: NXT Synchro Drive
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| (...) Yes, I think the new capabilities of the NXT are going to give us all a new perspective on the challenges we've taken on in the past. (...) Cool! There are other benefits to synchro drive as well, I suppose, such as the ability to change (...) (20 years ago, 7-Dec-06, to lugnet.robotics)
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