 | | Re: The Future of Trains
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(...) The linear regulator inside is a 1.5A version if I remember well, but I may be wrong. Cross posted to lugnet.trains trying to get train guru opinion... Philo (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt, lugnet.trains)
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| | RE: ARM Assembly Language Programming on NXT?
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Do a Google on "LEJOS OSEK". I believe this is a solution that has taken the base "OS" from the NXJ JAVA byte code interpreter as the basis for programming the NXT using GCC C++. I assume if you can use the GCC C/C++ tools with the NXT then you (...) (17 years ago, 8-Oct-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: The Future of Trains
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(...) Philo kindly corrected me, pointing out that the NXT outputs are regulated down to 1 A, so you couldn't run a dual-truck train all the way to stall. You could still get a good bit of the way there, however. Does anyone know what the peak (...) (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
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| | Re: The Future of Trains
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(...) Ah, thank you - so running two stalled train motors would exceed the NXT output, but running one train motor up to a stall conditions should be fine. Out of curiosity, along with the output limitations on the NXT (1 A) and RCX (500 mA), does (...) (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
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| | Re: The Future of Trains
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(...) Some precisions here: - NXT stall current is 2A but only for a short time: internal thermal protection will trip at a current much lower than that (exact value depends on temperature and overload duration). A practical value is about 1A - NXT (...) (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
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| | ARM Assembly Language Programming on NXT?
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Hi, I just stumbled on this newsgroup/website while searching for kits for teaching Assembly Language programming to undergraduate students in Comp. Science in an interesting (interactive) manner. I'm primarily interested in the ARM instruction set. (...) (17 years ago, 8-Oct-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: The Future of Trains
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(...) So it sounds like a single loop should be no problem under most situations, since I'm not sure I've heard of anyone running three motors on a single train (there's the same issue with how much amperage a power regulator can push). (...) It (...) (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
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| | Re: The Future of Trains
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(...) Stalled, the train motor pulls 950 mA, while the stall current of the NXT motor is a whopping 2 Amps. So a single NXT motor output should easily handle a twin-engine train loaded to the point where it stalls the engine(s)... there's the matter (...) (17 years ago, 7-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
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| | Re: The Future of Trains
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(...) Fair enough, but clearly the idea has sparked some interest, so I'm sure I'll see it get put into use at some point. (...) The ports may be able to pour out power, as you say, but I'd say it's equally well established that large trains with (...) (17 years ago, 7-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
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| | Re: The Future of Trains
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(...) As Ross mentioned, I was focused more on the "future" of trains, and if it's going to be done in LEGO, it looks like it will be done without conductive track. (...) Absolutely, but you could do better. Run a single loop off a single output, (...) (17 years ago, 6-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
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| | Power Functions presentation
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I have updated my website with a presentation of the new Power Functions system, including: # Overview of Power Functions range # Description of working # Comparison with older 9V mini-motors # LDraw and LeoCAD part files (URL) motors comparison (...) (17 years ago, 6-Oct-07, to lugnet.announce, lugnet.technic, lugnet.robotics, lugnet.trains) !!
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| | Re: The Future of Trains
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(...) I believe the options being discussed were in relation to the use of non-metal track, which is all that will be produced by LEGO in the foreseeable future. ROSCO (17 years ago, 6-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
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| | Re: The Future of Trains
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(...) Oh, for shame, Brian. Letting me think up an option that you passed right over (and a really cool one at that). With the legacy converter cables, you could power the _track_ with an NXT. Hook the track up as if it was a motor, using the (...) (17 years ago, 6-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
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| | Re: The Future of Trains
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(...) Not exactly, that I know of, *yet*... The biggest problem in running a train would be hiding the NXT - I saw only one good solution to hiding the RCX in a boxcar, and the NXT is bigger, as are the motors. You could use an old motor (or even a (...) (17 years ago, 6-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
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| | Re: The Future of Trains
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In lugnet.lego, Scott Wardlaw wrote: <snip> (...) <snip> Has anyone adapted two NXT units to drive a train yet? One NXT as a controller talks bluetooth to the other NXT that drives the train. The NXT that drives the train could be either attached to (...) (17 years ago, 5-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
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| | Re: Wonderful design tidbits PDF - anybody else impressed?
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(...) Don't let Brian's and Philo's understatements lead you to believe that this book, a collection of hundreds of ultra-high quality photos arranged in a stunningly simple succession of nearly uniform page layouts, is anything but the finest (...) (17 years ago, 5-Oct-07, to lugnet.technic, lugnet.robotics)
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| | Re: Wonderful design tidbits PDF - anybody else impressed?
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(...) I am impressed. This "book" is simply delightful. Many useful tips, wonderful presentation... Highly recommanded! Philo (17 years ago, 5-Oct-07, to lugnet.technic, lugnet.robotics)
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| | RoboFest Hawaii
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The Second Annual RoboFest Hawaii robotics competition and engineering fair will be held on Saturday, November 17 from 10:00 am to 2:00 pm at the University of Hawaii at Hilo Gym. RoboFest Hawaii is a high-technology and engineering fair thinly (...) (17 years ago, 2-Oct-07, to lugnet.robotics)
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| | Re: Cirque des Sciences
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(...) (17 years ago, 29-Sep-07, to lugnet.robotics)
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| | STriDER 2.0 -- tripedal robot
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This robot walks on three legs, but not in the way you'd expect: (URL) (17 years ago, 25-Sep-07, to lugnet.robotics, lugnet.technic)
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