Subject:
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Re: Fishing for a tasty linkage/gearing/robotic building thread...
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 12 May 1999 13:48:07 GMT
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Original-From:
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Paul Speed <PSPEED@AUGUSTSCHELL.spamlessCOM>
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Viewed:
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1656 times
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Michael Gasperi wrote:
>
> In lugnet.robotics, David Warnock writes:
> > Michael,
>
> > You could have one set of axles for forward/backward with 1 motor driving both
> > sides so you go straight.
> >
> > Then to change direction a second motor lowers a set of wheels/axles are right
> > angles to the first set lifting the original wheels of the ground. Then use a
> > 3rd motor to drive the bot from side to side.
>
> I was toying around with something like this. A foot like thing would come
> down, lift the whole vehicle up off the ground, then turn it right or left 90
> degrees (maybe even a variable angle), and set it back down. It does look like
> a three motor problem. It would be nice to pull it off with only the parts in
> the box. It doesn't need to go backwards, perhaps the drive motor could power
> the foot down when it is in reverse.
You could use a synchro-drive type of platform. This has been
mentioned on here a few times before with varying levels of complexity.
Since you only need 90 degree angles then you could probably get away
with synchronizing the wheel direction with beams. Properly blocked,
it could limit the direction of the wheels to somewhere between 0 and
90 degrees.
Since this is a simplified design, you might even be able to
do it with the pieces in the box.
-Paul (pspeed@progeeks.com)
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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