Subject:
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Lego Calipers
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 1 Sep 1999 17:50:06 GMT
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Original-From:
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Ben Williamson <BENW@saynotospamPOBOX.COM>
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Viewed:
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613 times
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On Wed, 1 Sep 1999, Robert Munafo wrote:
> The thing that's cool about these gears isn't the three-way shape so much as
> the fact that they come in two sizes that have not previously been available as
> normal gears -- 12 teeth and 20 teeth.
Quite useful too - I used the 20t gear in my (very simple) calipers
which are now on the web: <http://www.pobox.com/~benw/lego/>
Those 4-stud-long gear rack thingies have 10 teeth each, and I wanted to
get close to one increment on the rotation sensor per stud of movement.
With the 20t gear it works out at an increment per half stud, which is
fine. Now I can go around my house and measure everything in real units -
Lego studs. :)
- Ben.
-------------------------------------------------------------------
Ben Williamson benw@pobox.com http://www.pobox.com/~benw/
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 1 Reply:
 | | Re: Lego Calipers
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| (...) (actual URL is (URL) ) (...) Those calipers are pretty cool. It seems to me though you could get more precision, since the slop on the gears is a lot less than half a stud. The rotation sensor presents very little friction torque, so I imagine (...) (25 years ago, 1-Sep-99, to lugnet.robotics)
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