Subject:
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Re: (long) Rotation Sensor from "Extreme Creatures" Fiber Optics
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 5 Jan 1999 10:39:22 GMT
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Original-From:
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S. Crawshaw <SC10003@ENG.spamlessCAM.AC.UK>
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Viewed:
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1529 times
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On Tue, 5 Jan 1999, Eric Brok wrote:
> Why not simply use a small dish with white and black markings (or a cam or
> whatever) and detect its rotation with the light sensor?
Lego used to sell these - I forget exactly which set(s). If I remember
correctly they were about 2cm diameter with 45 degree segments alternating
black / white, with a standard axle hole in the centre.
You could get the same effect with a standard pulley wheel and a piece of
paper. I'd guess that black laser printing on decent white paper would
have good enough qualities for 45 degree segments - possibly even 22.5
degrees or 15 degrees.
Stuart
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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