Subject:
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Re: Thoughts on Turning
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 27 Jan 1999 05:02:08 GMT
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Viewed:
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1257 times
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How will the adder/subtractor help with your need for feedback in the turn ?
Will you use your modified rotation sensor to somehow achieve this ?
Also, I do not have a web page to put them on, but I built two modified
versions of the second example of the adder/subtractor shown on Alex' site
(his "father's design" I think he called it). I built it two ways, both of
them obviate the need for any offset gears, all the shaft-to-shaft gears are
in-line, which makes it unnecessary to reinforce things against the stress
forcing things apart.
If you like, I could EMAIL the pics to anyone who wants to see them, or
perhaps someone could volunteer to put them up on a page.
I did not actually build a vehicle around the two designs, this was more a
study of how to arrive at the same results in a minimal space in one
dimension or the other. Fun stuff...
--
SeeYa !
------------
Jim
----------------------------------------------------------------------------
Hello... Is this thing on ?
Blake Coverett wrote in message ...
> alex wetmore <lego-robotics@crynwr.com> wrote in message
> news:Pine.BSF.4.05.9901250905000.18496-100000@phred.org...
>
> > take a look at http://www.phred.org/~alex/lego. There are two robots
> > there based on an adder/subtractor that uses two differentials. The 2nd
> > design (at the bottom of the page) is much more efficient then the first,
> > so if you build one I'd suggest starting there. There is a website
> > where someone made directions for it using LDraw... I'll find the URL
> > soon (probably within a few hours) and update my page with that.
>
> Ah yes, I should have mentioned that. I definitely intend to move to an
> adder/subtractor for the driving wheels. But alas, only one differential • so
> far. Time to go shopping for more goodies. I see that as complementary to
> my existing fifth wheel solution.
>
> -Blake
>
>
>
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Message has 1 Reply:
 | | Re: Thoughts on Turning
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| Cyberia <cyberia@erols.com> wrote in message news:F67CnM.4sr@lugnet.com... (...) ? Separate issues, the adder/subtractor (is there really not a better existing name for this device btw?) is to deal with the slight variations in motor power that (...) (26 years ago, 27-Jan-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: Thoughts on Turning
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| alex wetmore <lego-robotics@crynwr.com> wrote in message news:Pine.BSF.4.05.9...red.org... (...) Ah yes, I should have mentioned that. I definitely intend to move to an adder/subtractor for the driving wheels. But alas, only one differential so far. (...) (26 years ago, 26-Jan-99, to lugnet.robotics)
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