 | | Re: RotationNavigator accuracy
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(...) rotation sensor counts tread rotation, but, because of skidding, the tank doesn't turn exactly the same way as treads do (...) rotation point position/drive length depends on tread width, center of weight position, speed and geometry of treads (...) (22 years ago, 14-Jan-04, to lugnet.robotics.rcx.java)
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| | Re: RotationNavigator accuracy
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(...) I guess it's more hardware related problem turning with tank-style robot is ALWAYS a trouble because tank doesn't have defined centre of rotation. If you imagine the simple robot - two wheels and a castor - there is rotation center well (...) (22 years ago, 14-Jan-04, to lugnet.robotics.rcx.java, FTX)
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| | Re: Where can I find Ultimate Builders Set?
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Ruth and others, Many Bricklink sellers WILL ship internationally. Sometimes, you just need to find someone you both know to verify that you are a trustworthy customer, and not a scammer who will ask for a refund on PayPal. One store in particular, (...) (22 years ago, 14-Jan-04, to lugnet.robotics)
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| | RE: What the heck? Pitsco selling RCX for $125!
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Before the end of 2003, the RCX from Pitsco was $79. I was going to buy a few because Pitsco sells 1.0 (the one with the power jack). So, sometime between Halloween and now the price went up 58%. (...) (22 years ago, 14-Jan-04, to lugnet.robotics)
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| | Re: Where can I find Ultimate Builders Set?
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(...) That is true... ...but I have tried to purchase those sets through them without any luck. The bricklink stores that had them wouldnt ship internationally. I have also tried some other stores on the net without any success...That is why I (...) (22 years ago, 14-Jan-04, to lugnet.robotics)
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| | Re: Where can I find Ultimate Builders Set?
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(...) That depends on which store *ON* Bricklink you visit. I've bought lots of stuff on Bricklink that's been shipped to me even though I don't live in the same country as the seller. >> Mark (22 years ago, 14-Jan-04, to lugnet.robotics)
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| | Re: Where can I find Ultimate Builders Set?
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(...) command set too. Both sets have been discontinued not only in the lego shop, but toy'r'us too. Looking on the web, I couldn’t find any site that would sell it (out of stock or discontinued) so my suggestion is ebay. There are people selling (...) (22 years ago, 14-Jan-04, to lugnet.robotics)
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| | Re: What the heck? Pitsco selling RCX for $125!
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(...) Isn't this basically the same deal that was available from Lego S@H and even some of the Lego stores for the past few years? (22 years ago, 13-Jan-04, to lugnet.robotics)
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| | vision command/macintosh question
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Hi, I'm new to this list. I was just wondering if anyone out there knows if there is a mac version of the vision command image recognition software? I'm running robolab and wanted to add the camera. Or is it possible to use robolab itself with a (...) (22 years ago, 13-Jan-04, to lugnet.robotics)
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| | Robo Waiter - a BrickFest PDX Robot competition
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Announcing a robot competition for BrickFest PDX... Robo Waiter: Line tracking while carrying mini-soccer balls ---...--- Build a Robotic Waiter that can carry a tray full of mini Lego soccer balls (or equivalently, basket balls) around a track. (...) (22 years ago, 13-Jan-04, to lugnet.robotics, lugnet.events.brickfest, lugnet.robotics.events) !!
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| | Re: Where can I find Ultimate Builders Set?
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(...) You might try LEGO's site, I think it's (URL) As well, there are usually numerous European seller's on E-Bay. Also try (URL) (22 years ago, 13-Jan-04, to lugnet.robotics)
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| | Re: The BrickOS Task Manager
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(...) C++ is more particular with types than regular ol' C. However, I think BrickOS's definition of NULL in mem.h is incorrect (as this was causing one of the problems in the execi call). IMO, it should be defined like so: #ifdef __cplusplus (...) (22 years ago, 13-Jan-04, to lugnet.robotics.rcx.legos)
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| | RotationNavigator accuracy
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Hi, I just try the rotation navigator class and have some problems with turning accuracy. My robot is a tank with treads and moving without turning works well, travel() moves the correct distance. Turning with rotate() or gotoAngle() is problematic. (...) (22 years ago, 13-Jan-04, to lugnet.robotics.rcx.java)
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| | Re: The BrickOS Task Manager
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(...) When saved as multi.c, but not when saved as multi.cpp (...) Start multiple tasks within a program that uses objects. I could rewrite a number of parts to use structs instead, but I just wanted to check that there wasn't some easy solution. (...) (22 years ago, 13-Jan-04, to lugnet.robotics.rcx.legos)
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| | Re: External power supply ?
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(...) I think you could find something cheaper than that (with a fixed-voltage output?) (...) The RIS 1.0 didn't support variables, but 1.0 bricks can use latest firmware so there is NO problem here ! (...) As Chris mentionned elswhere in this (...) (22 years ago, 13-Jan-04, to lugnet.robotics)
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| | What the heck? Pitsco selling RCX for $125!
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(URL) Guess LEGO has decided that I no longer need to purchase RCX's. Not sure how that helps them financially... - Rob (22 years ago, 13-Jan-04, to lugnet.robotics)
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| | Re: External power supply ?
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(...) I ran by Radio Shak today and they had one 3-12v rated at 1A I think. It was $37! (...) I have considered that too. But uncovered another potential complication. In researching around somewhere... I think at lego.com actually it said that RCX (...) (22 years ago, 13-Jan-04, to lugnet.robotics)
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| | Re: HELLO?!, LEGO CO. ! was: Will the educational arm of Technic & Mindstorms continue?
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Lego haven't said they are dropping it. Some journalist suffering from premature extrapolation decided thats what Lego's original statement meant. (22 years ago, 13-Jan-04, to lugnet.dear-lego, lugnet.robotics, lugnet.general, lugnet.technic)
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| | Re: The BrickOS Task Manager
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(...) Were you able to compile it as is? What are you trying to do? What errors are you getting? I tested that with version xx.09, not the latest one. Steve (22 years ago, 13-Jan-04, to lugnet.robotics.rcx.legos)
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| | Re: NQC's future
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"Brian Davis" <brdavis@iusb.edu> wrote in message news:HrB87H.17p1@lugnet.com... (...) future one) for NQC (...) I think your question probably meant "can I use FastTimer in defining events because I want better resolution than is possible with (...) (22 years ago, 12-Jan-04, to lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics)
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