 | | Re: Displaying multiple variables
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(...) There's also Steve Hassenplug's Display Number block (find it here (URL) along with some other NXT-G goodies). I use this all the time to display values for debugging. John (17 years ago, 19-Nov-07, to lugnet.robotics.nxt)
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| | Re: Nxc and Mindsensors stuff
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It seems you don't have the latest NXC*.h header files (found in source release of NXC, not in the binary releases), as well as the latest NXC_Guide.pdf describing I2C functions. alf Il giorno 12-nov-2007, alle ore 16:59, GiP ha scritto: (...) -- (...) (17 years ago, 18-Nov-07, to lugnet.robotics.nxt)
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| | Re: Displaying multiple variables
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(...) Nice. Thanks very much. When I get to my computer, I'm going to check to see how I missed the "Clear Screen" checkbox. (17 years ago, 17-Nov-07, to lugnet.robotics.nxt)
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| | Re: Displaying multiple variables
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(...) There are lots of ways to display such information on the NXT LCD. The easiest is probably to draw one number, and then use a second Display block to draw a second number - just uncheck the "clear screen" checkbox on the second Display block. (...) (17 years ago, 17-Nov-07, to lugnet.robotics.nxt)
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| | Displaying multiple variables
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Yesterday, I had a student who wished to display two numeric variables on the screen. We ended up multiplying the first by 1000 then adding the second. This we displayed and read as a packed variable with two shifted values. How can we do this more (...) (17 years ago, 17-Nov-07, to lugnet.robotics.nxt)
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| | Format of the NXT-G program files?
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Hi, Am I correct that there are no utilities for inspecting the NXT-G programs created with the RoboLab for NXT? I mean: printing the programs created in NXT-G in some human-readable format? Any documentation about the binary format anywhere? (...) (17 years ago, 8-Nov-07, to lugnet.robotics.nxt)
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| | Nxc and Mindsensors stuff
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Hi, we just bought some sensors from mindsensor.com but I cannot find any info on how to use them with nxc. I have seen that b33 has two new API but there is no "generic" info on how to use them and the mindsensor.com site has no info or sample (...) (17 years ago, 12-Nov-07, to lugnet.robotics.nxt)
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| | Resetting TachoCount in LCP
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Hi, I'm wondering how to reset a tachometer via the Lego Communication Protocol. Of the three tachometer readings, TachomCount, BlockTacho and RotationCount, I can only see how to reset the latter two using ResetMotorPosition (Bluetooth Developer (...) (17 years ago, 10-Nov-07, to lugnet.robotics.nxt)
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| | Installing LeJOS on Linux (Fedora Core 6)
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My sysadmin is trying to install LeJOS for me on our Linux servers. He's having a problem detailed in what I'm posting below. Does anyone have any ideas on what's going wrong? Thanks, Peter Copied message: ***...*** I am trying to build on a fedora (...) (17 years ago, 8-Nov-07, to lugnet.robotics.nxt)
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| | BricxCC release 3.3.7.17
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I posted a new official BricxCC release yesterday: 3.3.7.17. This release includes substantially improved help content for NBC and NXC as well as a built-in NBC compiler (beta 33). If you've been using the latest test release there isn't much new (...) (17 years ago, 6-Nov-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: Replenishing NXT Educational sets
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(...) I wondered about that. My search arguments weren't good enough to reveal the right Bricklink part number. Thank you very much! (17 years ago, 26-Oct-07, to lugnet.robotics.nxt)
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| | Re: Replenishing NXT Educational sets
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(...) Bricklink does not have the same part number for this piece as Peeron/LDRAW. Use this part number: (URL) You will find hundreds for sale. (17 years ago, 26-Oct-07, to lugnet.robotics.nxt)
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| | Replenishing NXT Educational sets
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The Edu Set has two 1x13 Technic Beams, (URL) The models presented in all the curriculum materials are absolutely dependent on these 1x13 beams. Bottom line, a missing 1x13 beam causes students a lot of grief, consternation, discouragement, (...) (17 years ago, 25-Oct-07, to lugnet.robotics.nxt)
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| | Re: nbc gives error for SendRemoteString
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(...) This is caused by a typo bug in the NXTDefs.h header that I accidentally introduced in beta 32. If you are running on a Windows box you can download a pre-release of beta 33 from the test_release.zip on the BricxCC page. I will have beta 33 up (...) (17 years ago, 25-Oct-07, to lugnet.robotics.nxt)
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| | nbc gives error for SendRemoteString
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Hi, has there been an undocumented change in the last nbc? I have some programs that use SendRemoteString and I cannot compile them any more (they compile with older versions). This minimal prog: ---...--- task main() { string out; out="String"; (...) (17 years ago, 23-Oct-07, to lugnet.robotics.nxt)
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| | 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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| | 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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| | 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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