Subject:
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Re: optical mouse as sensor?
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 24 Apr 2002 14:16:42 GMT
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Viewed:
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7295 times
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I believe that some research work in autonomous vacuum cleaners in the late
90's determined that a random walk over the course of a few hours was just
as good as a methodical path. I'll see if I can dig up the reference...
At 01:36 AM 4/24/2002 +0000, Scott wrote:
> HI,
> I am currently working on a handyboard based dust buster bot(goofy, I
> know) and have been trying to design an algorithm where my vehicle could
> methodically cover all the area in a given room, starting by following along
> the perimeter walls and then spiraling inward while avoiding obstacles(thus
> dynamically modifying its saved path). I've come to the conclusion that
> inorder to get back on track after avoiding an obstacle, my bot needs to
> accurately determine its location. I figured a dead reckoning system to
> establish a coordinate grid for any given room that it is navigating would
> be inorder. To implement this I began using a system of perpendicular shaft
> encoders, much like those found in an ordinary ball mouse. I had slippage
> problems, however, (much like a regular ball mouse) and these manifested
> inaccurate measurements. I have noticed that optical mice such aas the
> Logitech M-BJ58 does not suffer slippage problems like an ordinary mouse,
> and is in fact navigable on a wide variety of surfaces. I was wondering if
> it would be somehow possible to adapt my optical mouse as a sensor. I would
> need to determine the number of pulses/distance moved in both the x and y
> axis, much like using to shaft encoders. The mouse is usb and I know it
> uses CMOS based movement interpretation. Would anyone have any ideas on how
> to adapt something like this to measure movement, or on how to modify a USB
> device to read signals with a handy board(also how i would approach the
> programming to interpret signals)
> I know this is a large and complicated request, but if anyone has any ideas,
> I would greatly appreciate it.
--- Karl
__________________________________
Karl R. Wurst
Email: karl@w-sts.com
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Message is in Reply To:
 | | optical mouse as sensor?
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| HI, I am currently working on a handyboard based dust buster bot(goofy, I know) and have been trying to design an algorithm where my vehicle could methodically cover all the area in a given room, starting by following along the perimeter walls and (...) (23 years ago, 24-Apr-02, to lugnet.robotics.handyboard)
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