 | | Re: articulation points?
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(...) Exactly. Another way to look at DOF is that it is the number of things that have to be specified to define a particular configuration of the system. In other words how many RCX outputs does it take to drive. Another thing to keep in mind is (...) (23 years ago, 22-Nov-02, to lugnet.robotics, lugnet.build.mecha, lugnet.technic)
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| | Re: Books on Vision Command and Image Processing
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If Vision Command works like Lego RoboLab's image processing software, then look at: (URL) RoboLab software can use the Vision Command hardware. For more on RoboLab, look at: (URL) general image processing, look at: (URL) Vision (URL) Vision Maybe (...) (23 years ago, 22-Nov-02, to lugnet.robotics.vc)
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| | Re: LNP-problem...
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That looks ok to me. But I'm no expert on LNP. Here's a clip I use. It looks a lot like what you're using. It seems there may be a problem with your receive code. I'm REAL shaky on that. What does fputs do? ---- char *s; s = "101"; if (strlen(s)>0) (...) (23 years ago, 21-Nov-02, to lugnet.robotics.rcx.legos)
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| | BrickOS - RCX has problems turning ON
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Hi, I have two RCX's (from v1.5 kits) bought about a year apart. The newer one has no problems with BrickOS, the older one will only work using the slow transfer speed and does not turn on easily after the BrickOS firmware is loaded onto it. Usually (...) (23 years ago, 21-Nov-02, to lugnet.robotics)
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| | Sony Infra Red HandyBoard Transmission
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Has anyone successfully modified the sonyxmit.asm driver on page 267/268 of Fred Martin's publication: Robotic Explorations? I've been trying to modify the driver so that it will communicate with a Sony TV, so far without success. In the book Fred (...) (23 years ago, 20-Nov-02, to lugnet.robotics.handyboard)
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| | Re: articulation points?
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Date : Thu, 21 Nov 2002 16:23:22 +0000 This is just like anything else in the world....it is all realative to what your trying to prove. If you are talking about DOF for the entire object if would have 3. (x,y,z) If you look at single peices of an (...) (23 years ago, 21-Nov-02, to lugnet.robotics)
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| | Re: LNP-problem...
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(...) ok this is the (relevant) code running on the rcx: int main(int argc, char *argv[]) { char *p; init(); execi(&PacketWatcher, 0, NULL, PRIO_NORMAL, DEFAULT_STACK_SIZE); execi(&Messenger, 0, NULL, PRIO_LOWEST, DEFAULT_STACK_SIZE); return 0; } (...) (23 years ago, 21-Nov-02, to lugnet.robotics.rcx.legos)
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| | Books on Vision Command and Image Processing
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Hi, Does anybody know of any books on Vision Command at all. Especially any books at the level of David Baum's or Bagnall's on Mindstorms. I am really interested in detailed image processing with Vision Command. Thanks, Jon (23 years ago, 21-Nov-02, to lugnet.robotics)
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| | Vision Command Books
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Hi, Does anybody know of any books on Vision Command at all. Especially any books at the level of David Baum's or Bagnall's on Mindstorms. I am really interested in detailed image processing with VC. Thanks, Jon (23 years ago, 21-Nov-02, to lugnet.robotics.vc)
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| | Spybots IR Comm
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Hi, I buyed a Spybot short time ago and started to try programming it with BricxCC and NQC. From the software included in the spybot-package I know, that spybots can send IR messages to each other in order to get the other bots´ position. My (...) (23 years ago, 21-Nov-02, to lugnet.robotics.spybotics)
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| | iPAQ <-> RCX serial communication
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Hello People I am working on a project where we are trying to use a compaq handheld with linux and a wireless card as the "brain" of robots. "Underneath" we have an RCX acting as a "spine", which is supposed to receive macro commands from the PC and (...) (23 years ago, 21-Nov-02, to lugnet.robotics.rcx.java)
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| | Re: articulation points?
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(...) I was under the impression that a 6 head video recorder was a marketing concept, i.e. it has 4 video heads and 2 audio heads, so in this case (all things being equal) it would be exactly the same as the 4 head one. This is really what I've (...) (23 years ago, 21-Nov-02, to lugnet.robotics)
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| | Re: articulation points?
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(...) Here I go, tossing my 2 cents in to the fray: I would say that any differential drive on a flat surface has 3 DOF: -Assume it drives along the X axis (thats 1) -it can rotate around the Z axis (2 now) -once it rotates it can drive along the y (...) (23 years ago, 18-Nov-02, to lugnet.robotics, lugnet.build.mecha, lugnet.technic)
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| | Re: Another cement mixer......
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Andrea, Excellent model! Nice to see someone else also constructed a mixer truck. Seems that your model is fully operational. Did you have to cope come difficulties with the drumm? (shape, connection, motorization etc.). I'm curious to your next (...) (23 years ago, 21-Nov-02, to lugnet.technic, lugnet.robotics, lugnet.general, lugnet.modelteam, lugnet.loc.it)
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| | Re: Motor Control Register (0xf000)
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(...) It's the one I meant, thanks. Jürgen (23 years ago, 21-Nov-02, to lugnet.robotics.rcx, lugnet.robotics.rcx.legos)
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| | Re: articulation points?
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(...) The trouble with this is that it's not necessarily true. Take 100 Lego turntables and connect them up into a vertical column. By this measure, it has 100 DOF - but as a mechanism, it has no more flexibility than a single turntable (1-DOF). (...) (23 years ago, 21-Nov-02, to lugnet.robotics)
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| | Re: Helicopter was Re: Newbie has an idea
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(...) A Lego remote controller would be cheaper than a second RCX. ---...--- Steve Baker ---...--- HomeEmail: <sjbaker1@airmail.net> WorkEmail: <sjbaker@link.com> HomePage : (URL) : (4 URLs) (23 years ago, 21-Nov-02, to lugnet.robotics)
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| | Re: Newbie has an idea
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(...) Yes. (...) Depends a lot on how much work your robot is doing. If it's just running the computer with no motors or sensors turned on - then probably 12 hours. If you are running lots of motors and sensors then it's more like 3 hours...but it (...) (23 years ago, 21-Nov-02, to lugnet.robotics)
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| | Re: Why...
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Nick, Setting the timeslice to a low number (5ms is fairly low), negetively effects overall system performance. Time used by the operating system for task switching is taken away from applications. If a switch takes .5ms (for example) and you switch (...) (23 years ago, 21-Nov-02, to lugnet.robotics.rcx.legos)
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| | Re: Newbie has an idea
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(...) Power-to-weight ratio's are far too poor. Electric-powered aircraft have to be built with very careful attention to battery and motor technology with the lightest possible designs. Lego is HEAVY - so no aircraft. (...) Yes - that's fairly (...) (23 years ago, 21-Nov-02, to lugnet.robotics)
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