Subject:
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Re: mouse
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 24 Jan 1999 12:37:31 GMT
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Original-From:
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Ben Laurie <ben@algroup.^nospam^co.uk>
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Viewed:
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1089 times
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Jasper Janssen wrote:
>
> On Tue, 5 Jan 1999 01:57:33 GMT, lego-robotics@crynwr.com (Virginia
> Campbell) wrote:
>
> > May I suggest looking at the inside of a computer mouse to get an idea
> > of how to let your rotation sensor know which direction the rotation is
> > spinning.
>
> Personally, I've never been able to figure out just jow a mouse does
> that, either :)
You have a wheel with spokes and two sensors close to each other
(relative to the spoke distance) - if the sensors go A pause B long
pause A pause B then you are going one way, and if they go A long pause
B pause A long pause B then you are going the other.
If you go _really_ fast with a mouse, you may fool it into thinking it
is going the other way, I've found (a long time ago, so technology may
have moved on :-)
Cheers,
Ben.
--
http://www.apache-ssl.org/ben.html
"My grandfather once told me that there are two kinds of people: those
who work and those who take the credit. He told me to try to be in the
first group; there was less competition there."
- Indira Gandhi
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 1 Reply:
 | | Re: mouse
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| (...) Hmm, this is odd... the mouse I'm using to write this, has the holes quite equidistant. However, it does have two pairs of sensors/wheel. It's a genius Mousetoo, BTW, which I rather like and so never stopped using :) Ohmygod.. I just (...) (25 years ago, 24-Jan-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: mouse
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| (...) Personally, I've never been able to figure out just jow a mouse does that, either :) Jasper (25 years ago, 23-Jan-99, to lugnet.robotics)
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