Subject:
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Re: Lego Cam
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 20 Sep 2002 16:04:25 GMT
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Viewed:
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957 times
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For people using leJOS, a Java Vision System was released by Lawrie
Griffiths
"It supports most of the functions of the Lego Vision Command software, but
in an open extensible way that will allow much more sophisticated
functionality to be added.
Although it is designed for use for the Lego Cam that comes with the Lego
Mindstorms Vision Command product, it will work with most PC Web cameras. I
have tested it with the X10 XCam2 wireless camera. This camera can be
mounted on a Lego Robot to avoid the trailing USB wire, which is a problem
with the Lego Cam."
website: http://homepage.ntlworld.com/lawrie.griffiths/vision.html
Hope this helps
Wap
"Rob Limbaugh" <lego-robotics@crynwr.com> a écrit dans le message de news:
73718FFFA963C045BD5B74B2F9B1EBA53B13CF@gcgpo1.greenfieldgroup.com...
I meant 4, not 3.
-----Original Message-----
From: Rob Limbaugh
Sent: Friday, September 20, 2002 8:54 AM
To: Laszlo Meszaros (ETH); Jones, James
Cc: lego-robotics@crynwr.com
Subject: RE: Lego Cam
There are 3 basic options:
1) A wireless USB adapter of some type (RF/IR)
2) Hack the cam so that data between the video chip and USB controller
becomes wireless
3) Build a video driver package for various existing wireless cams to
bluff the VC software
4) Create a replacement for VC that will allow for other types of
video input
The first option is possible. Let's throw IR out the window because it
would interfere with RCX-to-other communications. The RF components capable
of transmitting a bidirectional USB signal are expensive. Half a year ago I
found a company that had a development kit available for creating wireless
USB devices. They wanted around $800 for it.
While the 2nd option is possibly cheaper, it would involve tearing apart the
camera, redesigning a circuit, etc. Such an endeavor is probably too
impractical. I doubt anyone could hack a cam for less than what an X10
costs, which is already wireless.
I favor 3 and 4 almost on an equal level (leaning more towards 4, though).
Both require programming skills over mechanical skills, which would make the
solution more "user friendly" for the masses.
A special video driver would allow those comfortable in the original
programming environments to participate in wireless video activities. The
third-party replacement for VC could cater to the more technical crowd and
could even open up areas like stereo vision or break the "8 region" barrier.
- Rob
-----Original Message-----
From: Laszlo Meszaros (ETH) [mailto:Laszlo.Meszaros@eth.ericsson.se]
Sent: Friday, September 20, 2002 2:49 AM
To: 'Jones, James'; lego-robotics@crynwr.com
Subject: RE: Lego Cam
> Has anyone tried to convert the Lego Camera into a wireless cam?
> It should be possible by using a transmitter/ receiver. I was just
> wondering if someone had some experiences with this they would like
> to share.
Eeer... how about the bandwidth?
Video signals might require several megabits per second.
Any experiences are welcome.
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Message is in Reply To:
 | | RE: Lego Cam
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| I meant 4, not 3. -----Original Message----- From: Rob Limbaugh Sent: Friday, September 20, 2002 8:54 AM To: Laszlo Meszaros (ETH); Jones, James Cc: lego-robotics@crynwr.com Subject: RE: Lego Cam There are 3 basic options: 1) A wireless USB adapter (...) (22 years ago, 20-Sep-02, to lugnet.robotics)
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