 | | Re: Source Code Changes in NXT Firmware Version 1.05
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(...) The changes between 1.03 and 1.04 are far more extensive than the changes from 1.04 and 1.05, if you lump the support for ADPCM compression into a single change (which involves c_sound.c, d_sound.c, d_sound.h, d_sound.r, d_sound_adpcm.r, and (...) (17 years ago, 18-Oct-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Source Code Changes in NXT Firmware Version 1.05
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I haven't seen it previously mentioned but the open source firmware for version 1.05 is downloadable from the LEGO Mindstorms web site. I did a WINDIFF on the various source files to see what has changed in this release. I then manually examined the (...) (17 years ago, 17-Oct-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | NXT Power Programming
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I’d like to officially announce that Variant Press will soon publish my new book, NXT Power Programming. It should be available November 7th. You can pre-order it now at Amazon.com or Variant Press. I hope everyone who purchases a copy of NXT Power (...) (17 years ago, 11-Oct-07, to lugnet.announce, lugnet.robotics, lugnet.robotics.nxt) !
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| | Re: Mindstorms NXT 1.1
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(...) Thanks Matthias, I did read that discussion; but I hadn't realized the people who said they called actually received it for free. My understanding was that they were in countries were it's listed as "not available yet" (such as Germany or (...) (17 years ago, 10-Oct-07, to lugnet.robotics.nxt)
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| | Re: Mindstorms NXT 1.1
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Thanks Philo, I should have thought to check nxtasy on the subject. Looks like there are a lot of improvements; but then again what interests me most is full support of my computer, which the current software doesn't provide. A patch, in short. On (...) (17 years ago, 10-Oct-07, to lugnet.robotics.nxt)
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| | Re: Mindstorms NXT 1.1
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There has been an according post on THE NXT STEP one week ago ((URL) a lot of comments of users there state that they have received it free of charge. I also do not understand why it is not available in Germany - that's ludicrous for an (...) (17 years ago, 10-Oct-07, to lugnet.robotics.nxt)
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| | Re: Power Functions presentation
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(...) I did it, I'll try to update my page with some internal photos. (...) The battery box delivers power through power lines (used by IR receiver) if the switch is not in neutral position, and C1 C2 whose polarity depends on switch position (and (...) (17 years ago, 10-Oct-07, to lugnet.robotics.nxt, lugnet.technic)
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| | Re: Mindstorms NXT 1.1
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(...) You are not alone thinking that: (URL) there are indeed a lot of improvements: (URL) (17 years ago, 10-Oct-07, to lugnet.robotics.nxt, FTX)
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| | Re: Power Functions presentation
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"Philippe Hurbain" <philohome@free.fr> wrote in message news:JpHqA1.FM@lugnet.com... (...) built internally? Your page seemed to suggest that someone had actually taken them apart, but there was no more information on there. Apart from the obvious (...) (17 years ago, 10-Oct-07, to lugnet.robotics.nxt, lugnet.technic)
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| | Mindstorms NXT 1.1
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Hi, I don't think I've seen it here yet, but apparently LEGO is finally releasing version 1.1 of the NXT software. It will be available on Shop@Home: (URL) So far it seems it's not available in all countries yet, but a phone call might work. To me (...) (17 years ago, 9-Oct-07, to lugnet.robotics.nxt, FTX)
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| | robo soccer
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I wonder if there is anyone who has experience with the following book: RoboCup 2002: Robot Soccer World Cup VI (Lecture Notes in Computer Science) I have a group of students are working on robosoccer game using nxt with RobotC. Recommendation? (17 years ago, 9-Oct-07, to lugnet.robotics.nxt)
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| | Re: The Future of Trains
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(...) You are right, the main limitation probably comes from wall wart... You are essentially right for the 0.7A current (though it is not hard limit, rather a safety one). Philo (17 years ago, 9-Oct-07, to lugnet.lego, lugnet.robotics.nxt, lugnet.trains)
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| | Re: The Future of Trains
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(...) The Australian LEGO wall wart is marked 10V @ 7VA on the secondary. I don't recall all the stuff I learnt about the relationship between VA and W, but that seems to me to indicate about 0.7A. I believe this generally reduces as load increases, (...) (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt, lugnet.trains)
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| | Re: The Future of Trains
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(...) At BayLTC we usually run four train motors on one loop using stock Controller with a 1.2 amp wall wart. Bruce (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt, lugnet.trains)
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| | 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: 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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| | 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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