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 14:57:40 GMT
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Original-From:
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Jonathan Knudsen <jonathan@oreilly*nospam*.com>
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Viewed:
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967 times
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Hi Michael and everybody,
I'm working on a robot (for my book)
that uses a single motor to go forward
and turn in place. I'm using a directional
transmission, based on Michael Powell's
original design:
http://www.sonic.net/~rci/transmission.htm
I use the outputs of the directional
transmission to turn my drive wheels,
which are located on either side of
the robot. Run the motor forward, and
both wheels go forward. Run the motor
in reverse, and the robot spins in place (a
zero turning radius). Of course, you can only
turn in one direction, but this isn't much of
a limitation, particularly in light of the
zero turning radius. Want to turn right 90
degrees? Fine. Want to turn left 90
degrees? Just turn right 270 degrees (although
you'd need to rely on timing for this,
unless you want to get involved with
rotation sensors).
The gearing is a little tricky--I'm on my
fourth or fifth iteration of the drivetrain.
But it is possible, and it leaves you
with two free outputs to do other stuff.
Regards,
Jonathan
At 02:22 PM 5/12/99 GMT, Michael Gasperi wrote:
> In lugnet.robotics, lego-robotics@crynwr.com writes:
>
> > > 3rd motor to drive the bot from side to side.
> > you may need a third motor switch to do the lift/rotate function.
>
> I probably need the 3rd motor to power the program reading part of the • vehicle.
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 2 Replies:
 | | Robotics Book
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| Any idea on when that book is coming out? I can barely wait. -Nick Jonathan Knudsen wrote in message <3.0.5.32.1999051210...et.com>... (...) (25 years ago, 12-May-99, to lugnet.robotics)
| | | Re: Robotics Book
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| Hi Nick, We're shooting to release it in time for the Christmas 1999 season. This means I have to finish in August, which means I have to write a chapter every two weeks or so. So far it's going well. I can barely wait myself. Again, this is (...) (25 years ago, 12-May-99, to lugnet.robotics)
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