 | | Re: Working motorized focus for Vision Command
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I have no idea how to access the camera from a programming language, nor do I have any experience in raw vision proccessing. Do you know how to do any of these previously meantioned? Timothy (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Working motorized focus for Vision Command
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(...) Yes - that'll also make the algorithm run faster. (...) I'm sure it's possible. What I'm not sure about is whether the kind of naive algorithm that I could come up with after just a few minutes thought would be effective. It might take some (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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I have not performed any tests, but if you go in configuration panel, you will see that the USB tower can't be put in long range mode if it is placed behind a passive (non powered) USB hub. That may also be the case for low power laptop usb ports. (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Lego® 9V Technic Motors compared characteristics
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Hi Gaurav, (...) ;o) (...) I don't own these motors... but I have a friend who has this set, if I can get him to extract the motors from the car I'll post an update... Philo www.philohome.com (23 years ago, 18-Dec-02, to lugnet.robotics, lugnet.technic)
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| | Re: Working motorized focus for Vision Command
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Thanks for replying! I was thinking of the same procedure. But to help with the varried depth problem, a small part of the viewed area could be selected to be the focusing point. So overall, it must be possible, right? Timothy (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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I have one of each RCX (1.0, 1.5 , 2.0) and have tested the signals using a palm app called IRMonitor with little or no difference between the three. This is by no means a "labratory test". Haveyou noticed this with more than one brick? For the (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Working motorized focus for Vision Command
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(...) Well, I'm not an expert - but I imagine it should be possible to produce a measure of how sharp the image is. For example by adding up all the differences between one pixel and it's neighbours. In a sharp image, you'd expect a lot of nice high (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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(...) Actually I've noticed that the 2.0 brick's IR capabilities don't seem to be as strong as the 1.0/1.5 bricks. I don't know why this would be, if something got changed in the hardware? It isn't an issue for most things, but if you want bricks (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: USB IR Tower Linux
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(...) There's a driver project at (URL) also P C Chan did a patch for BrickOS to support it (URL) (I havent tried either of these) Regards ROSCO (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | USB IR Tower Linux
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Anyone got the USB IR tower shipped in 2.0 to connect to a linux box? If not, are there any specs available so that I can write one? Thanks, Brian Palmer (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | RE: 8472
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Take at look at (URL) (If you didn't already) Greetings, Bram Nauta [bram.nauta@home.nl] -----Oorspronkelijk bericht----- Van: Laszlo Meszaros (ETH) [mailto:Laszlo.Mesza...icsson.se] Verzonden: dinsdag 17 december 2002 21:47 Aan: (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Lego® 9V Technic Motors compared characteristics
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(...) This is very informative indeed and excellently designed; I learned quite a bit from the article. thanks and great work. BTW do you happen to know how the new 8475 motors compare here? (from what I have heard, they are more powerful than (...) (23 years ago, 17-Dec-02, to lugnet.robotics, lugnet.technic)
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| | Re: Last Call For BricksWest 2003 Presenters/Sessions
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Is anyone presenting brickOS at BricksWest? Their last call states that they are heavy on Mindstorms but the Brickwest website, last updated in October?, seems to only indicate several talks on RoboLab. It would be great to have someone present. Or (...) (23 years ago, 17-Dec-02, to lugnet.robotics, lugnet.events.brickswest)
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| | Re: linker segmentation fault
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(...) Workaround attached. Brickos maintainers: Any comments? Maybe put something vaguely like it into CVS? Max. (23 years ago, 17-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Autonomous RCX Racing - formerly Nascar style racing
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These are exellent ideas, I was originally trying to support 20+ teams like a tournament. only a few (eight is plenty)cars would be on the track at one time. Now I realize that would be better handeled by a database. I like the idea of the vision (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Autonomous RCX Racing - formerly Nascar style racing
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(...) Random thoughts: The way I read it, you can only notify of position down to 9th place. I guess you could treat 9th place as "9th or worse place". Also, you can only send a count of up to 9 laps, limiting either the race length or the error (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | RE: Autonomous RCX Racing - formerly Nascar style racing
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<SNIP> (...) Perhaps 2 bits for race status, 3 bits for car #, and 3 bits for position. That gives 8 cars and 8 positions plus allows the ability to tell a car "finished", "keep racing", or "caution": MSB 7 6 5 4 3 2 1 0 LSB s s c c c p p p Message (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Working motorized focus for Vision Command
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anyone?? (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | linker segmentation fault
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I'm running Red Hat Linux 8.0 (gcc 3.2 and binutils 2.13). Whe I try to compile the demos that come with brickOS 0.2.6.09, using binutils 2.12.91 for the cross-linker and gcc 3.2.1 as cross-compiler, the linker crashes. Here is the output of the (...) (23 years ago, 17-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Autonomous RCX Racing - formerly Nascar style racing
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(...) Here is a link to Gus Janson's SteerBot ((URL) which I think you will find has great maneuverability as well as a tight turning radius (~6"). I have replicated it several times in the past 2 months for my group's line following event. After (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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