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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Sat, 23 Jan 1999 11:39:26 GMT
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Viewed:
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1044 times
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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 :)
Jasper
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Message has 2 Replies:
 | | Re: mouse
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| (...) 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 (...) (25 years ago, 24-Jan-99, to lugnet.robotics)
| | | Re: mouse
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| Quadrature encoding. Essentially, there are two light sensors on the rotating disk, which are placed at distance such that when you rotate one direction, you get the following two waveforms: -- ---- ---- ---- ---- ---- ---- -- and when you rotate (...) (25 years ago, 25-Jan-99, to lugnet.robotics)
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Message is in Reply To:
| | mouse
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| 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. -- Did you check the web site first?: (URL) (25 years ago, 5-Jan-99, to lugnet.robotics)
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