Subject:
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Re: vision command idea...
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 11 Dec 2000 15:59:42 GMT
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Viewed:
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1200 times
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okay, i guess i am not getting the proper idea across...
i do not want a synchro-drive, i'm looking for a solution to the problem of
having the back wheels turn opposite from the front wheels thus trimming the
turing radius down. now, the drive direction will be the same direction
relative to the chassis, i have come up with a solution that does not use a
"real" rack and pinion steering, and each axel has a differential,
now look closer, if you see i say "actually i wasn't talking about a
synchro- i am going to tackle that problem
when i get some more turntables" immediately before you tell me that you
have a solution that is a synchro-drive but it only gives 100 DOF.
it was just a little problem but i think that i have to get a site up, does
anyone have a solution to get the steering linkage around the drive linkage?
something neat and clean, not too much play i have a previous solution but
it doesn't use all-wheel drive, six wheel and the middle gears drive.
regards,
m.
Rainer Balzerowski <balze2@gmx.net> wrote in message
news:G59toD.H7r@lugnet.com...
> In lugnet.robotics, Mike Fusion writes:
> > actually i wasn't talking about a synchro- i am going to tackle that • problem
> > when i get some more turntables
>
> If you're looking for a solution without Lego turntables look at this site
> http://www.informatik.fh-hamburg.de/~lego
>
> It has not the accuracy as a synchro with lego turntables but it does • work.
> BTW it has only about 100 degrees of freedom but you reach every point you
> want to reach by driving for- and backwards.
>
> This site is only available in german at the moment but i guess a look at
> the photos might be interesting.
>
> I thought about your vision command idea in a similar way : shaft encoding • !
> But there is a difficulty. The VC software only reacts of ONE field at a • time.
> You don't know which field the VC software evaluates. This means for your
> multi-switch that if 1,2 and 3 are activated you may get the message 1 OR • 2
> OR 3 from the VC software.
>
> Rainer
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Message has 2 Replies:
 | | Re: vision command idea...
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| (...) Hi Mike, I of course see that you are willing to build a robot that turns front and back wheels in different direction! But you said :".... i am going to tackle that problem when i get some more turntables"! Right? The only thing I wanted to (...) (24 years ago, 11-Dec-00, to lugnet.robotics)
| | | Re: vision command idea...
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| i'm sorry if i offended anyone but i got like a ton of email from people saying that i should use a synchro drive and it is exactly the opposite of what i was looking for... the super car was more on the track but i didn't look at it closely enough (...) (24 years ago, 12-Dec-00, to lugnet.robotics)
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Message is in Reply To:
| | Re: vision command idea...
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| (...) If you're looking for a solution without Lego turntables look at this site (URL) has not the accuracy as a synchro with lego turntables but it does work. BTW it has only about 100 degrees of freedom but you reach every point you want to reach (...) (24 years ago, 8-Dec-00, to lugnet.robotics)
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