 | | Re: Advice on NXT demonstration Project
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Thanks Brian! If the people at this meeting will enjoy this demonstration as cool as my kids did, It will be a major success! And JennToo is amazing! He is simple, cool design, have personality and it is very flexible. If I get some time until (...) (18 years ago, 10-Feb-07, to lugnet.robotics.nxt)
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| | Re: Advice on NXT demonstration Project
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"Brian Davis" <brdavis@iusb.edu> escreveu na mensagem news:JD4JyL.9zA@lugnet.com... (...) Brian, JennToo has a very interesting behaviour in the nest program. (I saw the movie). Is it ask to much for the NXTG code? I did not find it anywhere... (...) (18 years ago, 10-Feb-07, to lugnet.robotics.nxt)
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| | Re: NXT parts for MLcad 54087 or 56145
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Hi all, (...) I checked the size with a 44292 wheel. It's exactly the same. I also checked on Peeron site, the two parts seem to be the same. (URL) Klein A Mindstorms fan. (18 years ago, 9-Feb-07, to lugnet.cad.mlcad, lugnet.robotics.nxt)
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| | BricxCC release 3.3.7.16
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I have released today a new official BricxCC release (3.3.7.16) which includes NBC/NXC 1.0.1 b25. BricxCC has updated syntax highlighting for NXC and NBC. It also has a number of minor fixes. In particular, the code explorer and procedure list tools (...) (18 years ago, 9-Feb-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | NXC/NBC release news
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I have posted sourcecode and the win32 build of beta 25 for NBC/NXC. The Linux and Mac OSX binaries will be available later today. February 8, 2007 - NBC 1.0.1.b25 beta is available. - Fixes a string whitespace bug introduced in b22 - Fixes a (...) (18 years ago, 9-Feb-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: Advice on NXT demonstration Project
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(...) Not being an expert by far myself, I have made several demonstrations locally in my area. I built what the instructions lead you though that come with the set. It took only a few hours the first time and I had a robot that exhibited all of the (...) (18 years ago, 8-Feb-07, to lugnet.robotics.nxt)
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| | Re: Advice on NXT demonstration Project
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(...) In five days, you need something really simple that you understand. Something like Tribot, but make it clear that you know what it's doing. Another really small, *extremely* simple chassis is JennToo* (and a remote control for it as well, if (...) (18 years ago, 8-Feb-07, to lugnet.robotics.nxt)
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| | Advice on NXT demonstration Project
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Hi people, I was asked to perform a Mindstorm Demonstration for a company especialized in High Level Businnes Trainning (Coaching, Leadership, Creativity, Future, etc...) They heard about lego robotics and they want to know more about it, and (...) (18 years ago, 8-Feb-07, to lugnet.robotics.nxt)
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| | Re: compilation switch in BrickCC Command Center?
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(...) Are you talking about defining a macro via a command-line switch such as nqc -Susb -d -DMYVAL=xyz foobar.nqc or something of that sort? If that is what you have in mind then you can do it from within BricxCC with NQC but I have not yet (...) (18 years ago, 6-Feb-07, to lugnet.robotics.nxt, lugnet.robotics)
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| | compilation switch in BrickCC Command Center?
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Thru brickcc command center, I wonder how to insert a user-defined compilation switch as I want to use it in the preprocessor directives. Input is greatly appreciated. --Elizabeth (18 years ago, 6-Feb-07, to lugnet.robotics.nxt, lugnet.robotics)
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| | Re: HELP! NXT brick flash now read-only!!
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(...) Juergen et al., Good news, everyone! The nightmare is over. :-) And I got to learn a few things in the process, too! Setting the security bit must have been what I did, although I don't specifically recall it...I do remember that, before I (...) (18 years ago, 5-Feb-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | RE: HELP! NXT brick flash now read-only!!
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(...) It may be obvious, but: Holding the reset pin for a few seconds simply does a brick reset. Holding the reset pin for around 15 seconds is supposed to put the brick into SAMBA mode. You are doing the second I hope. And just to be safe, you've (...) (18 years ago, 4-Feb-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: HELP! NXT brick flash now read-only!!
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(...) OK, everybody take a deep breath and slow down. first of all, the SAMBA version I'm using is 1.11, available here: (URL) And for anyone that's going to get busy hacking firmware, this is a great place to start: (URL) Yes, there is a script (...) (18 years ago, 4-Feb-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: HELP! NXT brick flash now read-only!!
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(...) The Atmel SAM-BA downloader, included in their In-system Programmer package: (URL) was using an older version than the one currently available on their site, though (1.7 vs. 1.8). (...) Well, it would be nice to be able to get back IN to the (...) (18 years ago, 4-Feb-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: HELP! NXT brick flash now read-only!!
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(...) Nathan, What software did you use to load V1.04? It sounds like there is something in there that set the firmware to read-only after it loaded it. Can you find any settings like that in that software? Steve (18 years ago, 4-Feb-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | HELP! NXT brick flash now read-only!!
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All, Up until this point, I kept hearing that it was pretty much next to impossible to "brick" a brick. However, I think I've managed to be the first person to prove that it *can* be done (not that I'm proud of this fact :-( ). A few weeks back, I (...) (18 years ago, 4-Feb-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | NXT controlled Red Quad
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(URL) NXT controlled Red Quad> - completed 2-3-07 (URL) controlled Red Quad>> Motorized tail - neck and head (3 URLs) Ultrasonic - Touch and Sound Sensors (URL) Sensor>> (URL) Sensor>> (URL) Sensor>> Custom eye lights courtesy HiTechnic - 68.8 x 36 (...) (18 years ago, 4-Feb-07, to lugnet.announce.moc, lugnet.robotics.nxt, lugnet.technic, lugnet.build.mecha, FTX) !!
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| | 4Bit Digital Controller with LEGO NXT Visual Display
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Hi LEGO NXT enthusiasts, I've just posted a Reference Design on my blog (URL) showing how to build a Digital Controller with a twist. I'm using the LEGO NXT as a visual indicator. It's a remix based on providing output status for digital circuits. (...) (18 years ago, 2-Feb-07, to lugnet.robotics.nxt)
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| | NXC Documentation & Samples
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A Not eXactly Complete (NXC) version of the NXC Guide is now available on a new NXC Docs page. It is based on the original NQC Guide written by Dave Baum and John Hansen. (URL) portions of the document describe compiler features which have not yet (...) (18 years ago, 31-Jan-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: Spawning threads in NBC
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(...) Just to clarify, NXT-G doesn't have a thread scheduler. NXT-G is a just a graphical programming language, not a firmware or a virtual machine. The standard NXT firwmare implements a virtual machine which has a thread scheduler. The name of the (...) (18 years ago, 31-Jan-07, to lugnet.robotics.nxt)
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| | Re: Spawning threads in NBC
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(...) I'm sure someone with some firmware knowledge will have a better answer for this, but my belief is that there are no smarts in the firmware for swapping threads during a wait - i.e. I bet it uses a full timeslice. I have done some BT logging (...) (18 years ago, 31-Jan-07, to lugnet.robotics.nxt)
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| | RE: Spawning threads in NBC
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I don't know how the NXT-G thread/task scheduler works. Just wondering if anyone has any idea on the impact on execution performance when multiple threads are running? And how often threads are scheduled? For example, if you have a "main" thread (...) (18 years ago, 31-Jan-07, to lugnet.robotics.nxt)
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| | Re: Spawning threads in NBC
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(...) I stop a thread the manual way: #define STOP_OTHER_THREAD() \ set bOtherThreadEnable, FALSE dseg segment bOtherThreadEnable byte TRUE ends thread main start OtherThread // John's great invention //... STOP_OTHER_THREAD() // ... endt thread (...) (18 years ago, 30-Jan-07, to lugnet.robotics.nxt)
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| | Re: Spawning threads in NBC
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(...) I'm trying to leave you alone John, but I haven't been too successful :). (18 years ago, 30-Jan-07, to lugnet.robotics.nxt)
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| | Re: WIP - Red Quad
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Hello Eric! (...) The legs show a high flexiblity! Great! Why are there wheels on the feets? Are there wheels so that they feets legs do not slipping away? I think a time abot the Mindstorms NXT and I think about how to use this in a Mecha. Nice to (...) (18 years ago, 30-Jan-07, to lugnet.build.mecha, lugnet.robotics.nxt, FTX)
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| | NBC and NXC API macro testing (bluetooth-related)
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If you have 2 NXTs lying around and you are moderately interested in testing some potentially interesting new NBC and NXC API macros then I would definitely be interested in hearing from you via email. I have written a few additions to the NXTDefs.h (...) (18 years ago, 30-Jan-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: WIP - Red Quad
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(...) Ah-ha! That explains my strange building habits lately. Hopefully the merger will mean I'll get an equal portion of the extensive Sophie part collection. I mean, if you doesn't know where he got it, you won't miss it right? -a (18 years ago, 30-Jan-07, to lugnet.build.mecha, lugnet.robotics.nxt)
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| | NXC/NBC release news
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I have posted beta 24 of NBC/NXC. Here's the list of fixes and new features: Version 1.0.1.b24 ---...--- - Fixes a preprocessor bug in NBC and NXC that is triggered by not having a ')' at the end of a macro invocation (or anywhere following in the (...) (18 years ago, 29-Jan-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | RE: Spawning threads in NBC
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In practicality, it is not a good practice to kill another thread without some sort of synchronization anyway. However, if one thread is not responding for a long period of time, it will be good to allow the parent thread to terminate it. (...) (18 years ago, 29-Jan-07, to lugnet.robotics.nxt)
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| | Re: Spawning threads in NBC
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(...) Unfortunately, there really isn't any way to implement a mechanism for stopping a thread from another thread (without firmware modifications). John Hansen (18 years ago, 29-Jan-07, to lugnet.robotics.nxt)
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| | Re: Spawning threads in NBC
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(...) Is there any plan to create a way to stopped threads that have been spawned in this way (similar to NQC)? (18 years ago, 29-Jan-07, to lugnet.robotics.nxt)
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| | FW: Another Challenge. Performance Comparison
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Dick, 2 questions: 1) Regarding the benchmark code used for performance analysis. How about something which will require intense sensor feedback? How about simple alignment code? I really want to stick with RCX for teaching as kids have to do a lot (...) (18 years ago, 29-Jan-07, to lugnet.robotics.nxt, lugnet.robotics.rcx)
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| | Re: WIP - Red Quad
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"Geoffrey Hyde" <g.hyde@bigpond.net.au> skrev i en meddelelse news:JCKtAE.6qJ@lugnet.com... (...) David List (18 years ago, 29-Jan-07, to lugnet.build.mecha, lugnet.robotics.nxt)
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| | Re: Spawning threads in NBC
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(...) A dream (soon) becoming true ;o) Philo (18 years ago, 29-Jan-07, to lugnet.robotics.nxt)
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| | Spawning threads in NBC
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Thanks to David Wallace's very thought-provoking (although somewhat distracting) emails, I think I can put together a simple pseudo NBC opcode which will let you start a thread in a manner very similar to how it works in NQC. It requires a couple (...) (18 years ago, 28-Jan-07, to lugnet.robotics.nxt)
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| | Re: WIP - Red Quad
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(...) Thanks, I am sometimes not sure where some of my parts come from. I just have them. :p (...) Yes, we will be announcing the Sneary-Sophie combine. We are building a Spa-Mechgorpian. Amazing? Indeed. Scary? yes. (...) Thank you, I have the Quad (...) (18 years ago, 28-Jan-07, to lugnet.build.mecha, lugnet.robotics.nxt)
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| | Re: WIP - Red Quad
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"Geoffrey Hyde" <g.hyde@bigpond.net.au> wrote in message news:JCKtAE.6qJ@lugnet.com... (...) Aaron? I've been looking at posts for too long. :) I meant Eric, sorry for any confusion!! :D BTW, I would like to say to Eric that is one pretty good (...) (18 years ago, 28-Jan-07, to lugnet.build.mecha, lugnet.robotics.nxt)
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| | Re: WIP - Red Quad
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"David List" <zerobuttons@gmail.com> wrote in message news:JCKpMs.KG0@lugnet.com... (...) I recognize at least this element in them: (URL) also this element as well: (URL) easy if you know what you're looking at! ;) I know I'm not Aaron, but these (...) (18 years ago, 28-Jan-07, to lugnet.build.mecha, lugnet.robotics.nxt)
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| | Re: WIP - Red Quad
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"Eric Sophie" <mylegomaster@aol.com> skrev i en meddelelse news:JCJpCL.16x@lugnet.com... (...) Nice - which set do you find the hip joints in? Best regards, David List (18 years ago, 28-Jan-07, to lugnet.build.mecha, lugnet.robotics.nxt)
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| | Re: New York City NXT Meet-up
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Sounds great, keep us informed! (18 years ago, 27-Jan-07, to lugnet.robotics.nxt)
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| | WIP - Red Quad
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I have been working on this Red Quad. Contains the NXT. Work in Progress. (URL) (18 years ago, 27-Jan-07, to lugnet.build.mecha, lugnet.technic, lugnet.robotics.nxt, FTX) !
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| | Re: Improving the firmware?
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(...) Dick, I was thinking more in the direction of adding a new Module, with a IOMap that has room to set a command and several parameters, and use the ReadIOMap and WriteIOMap to set them. This may not be the fastest solution, since as you (I (...) (18 years ago, 27-Jan-07, to lugnet.robotics.nxt)
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| | Re: Improving the firmware?
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(...) Yes, LeJOS supports the Java Math library. (18 years ago, 26-Jan-07, to lugnet.robotics.nxt)
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| | Re: New York City NXT Meet-up
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(...) I think you could arrange and trip out to NYC! (no offense) but as long as you can speak in english. Anyway, thank you so much for your own kind thoughts about my future group., (18 years ago, 26-Jan-07, to lugnet.robotics.nxt, FTX)
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| | Re: Text Based Programming for NXT - pbLua is Available
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(...) Hi pbLua-Fans, while waiting for Ralphs nxt = {}, I'm started some more test at my PC... and this it the result of today: (URL) was written using murgaLua (Lua5.1+FLTK+Luasocket). Some simple routines for emulating pbLUa are alreay running 8-) (...) (18 years ago, 25-Jan-07, to lugnet.robotics.nxt)
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| | Re: New York City NXT Meet-up
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(...) Theo, Even though I live in Indiana and can't be part of your team, I want to applaud your efforts to start a new robotics group. I wish you guys all the best in growing your skills while having a lot of fun. IMHO - for an early competitive (...) (18 years ago, 25-Jan-07, to lugnet.robotics.nxt)
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| | Re: New York City NXT Meet-up
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(...) I am interested. Please let me know when you have enough people for the first meeting. Thanks. Rey Parma (18 years ago, 25-Jan-07, to lugnet.robotics.nxt)
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| | Re: What do these macros do?
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(...) John - if you've got someone's ear in this, could you also see if a GCC build of the firmware can be released? I know LEGO are unlikely to use GCC themselves as they can afford more specialised tools, but so far, I don't see much of a (...) (18 years ago, 24-Jan-07, to lugnet.robotics.nxt, lugnet.robotics)
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| | Re: What do these macros do?
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(...) It is possible to write to the popup buffer but only by using the IOMap routine (SetDisplayPopup). The regular system calls which write to the LCD all write to the normal display memory. Unfortunately, as Dick Swan suggested, the current NXT (...) (18 years ago, 24-Jan-07, to lugnet.robotics.nxt, lugnet.robotics)
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| | RE: Improving the firmware?
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David Wallace wrote on Tuesday, January 23, 2007 7:34 PM: (...) This is an opportunity for the open source community to improve the firmware. Enhanced firmware does not need to have any dependency on the LEGO or NI development teams. The challenge (...) (18 years ago, 24-Jan-07, to lugnet.robotics.nxt)
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| | Re: Improving the firmware?
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Thanks Philippe. You definitely asked the questions that I was thinking about and I pretty well understood the answers except I was a little puzzled by the need for "follows" as well. However, we definitely lost functionality in this area with NXT. (...) (18 years ago, 24-Jan-07, to lugnet.robotics.nxt)
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| | Re: What do these macros do?
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(...) Is it possible to write in the display popup buffer? So that we can do double buffering? I made some quick tests, but it seems the drawing routines always write in the normal display buffer... Julien (18 years ago, 23-Jan-07, to lugnet.robotics.nxt, lugnet.robotics)
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| | Re: Improving the firmware?
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(...) I asked about the same questions some time ago, here is John's answer: (URL) (18 years ago, 23-Jan-07, to lugnet.robotics.nxt)
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| | Re: Apology
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(...) Hoser! Kev P.S. Dave, my friend, I knew this was a sore spot. I was just tickling it a bit, not meaning to pour salt. I'm so open minded that I have a Canadian friend that lives here in the lower 48. It is clear from him that this horrible (...) (18 years ago, 23-Jan-07, to lugnet.robotics.nxt)
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| | Re: Improving the firmware?
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If anyone is still listening to suggestions, I would like to have the ability to spawn a thread. I don't know how threads are handled in NXT-G, but in NBC, there is no way to create a thread to kick off a task while moving on to other tasks in the (...) (18 years ago, 22-Jan-07, to lugnet.robotics.nxt)
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| | Re: NXC News
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(...) Great sites! I have asked Danny Benedettelli to put together an NXC Tutorial based on the existing NQC Tutorial and NBC Tutorial. He's making great progress on that so it should be available soon. And I'm feverishly working on finishing the (...) (18 years ago, 22-Jan-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: NXC News
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(...) Matthias, you forgot the other german Workshops and FAQ's ;-) FAQ, Workshop und Tutorial zu NXC gibt es hier: (URL) FAQ, Workshop zu pbLua (URL) Regards Christian (18 years ago, 22-Jan-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: NXC News
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Someone sent me a link today to what I guess is one of the first existing tutorials for NXC, at least the first one in German (please correct me if I'm wrong): (URL) if this here allegedly is an "American forum" (HOOOTS!), it might be of interest (...) (18 years ago, 22-Jan-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: Text Based Programming for NXT - pbLua is Available
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(...) Thanks for the support - I thought I was the only one! My main aim was to go for the sort of graphics libraries that support games, so if you could spare the memory you could draw on hidden screens, copy chunks of screens around, display (...) (18 years ago, 22-Jan-07, to lugnet.robotics.nxt)
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| | NXC News
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I have just released a new beta of NBC/NXC. It is available from the NBC website: (URL) has been updated with a few syntax highlighting changes (minor). The latest test release is at (URL) via the link in the NXT News section near the top. Version (...) (18 years ago, 22-Jan-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: Text Based Programming for NXT - pbLua is Available
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(...) This would definitely be useful for me! I am currently programming an interface for controling a train layout. This is the kind of thing that needs good graphics. There is a lot of situation where advanced graphics are useful in robotics. (...) (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Re: This is the cancer that is killing Lugnet (Was Re: Apology)
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(...) <snip> (...) 'Cause you know, inserting a little levity to make an otherwise argumentative thread a little brighter never helps. (is the sarcasm filter not working??) Lessons learned? Some people want to get in the last snipe, even after all (...) (18 years ago, 21-Jan-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | Re: This is the cancer that is killing Lugnet (Was Re: Apology)
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(...) Umm... the only person arguing here is you: the original posters had a problem with each other, that they resolved; argument ended. Period. If the two principles have moved beyond this, well... (18 years ago, 21-Jan-07, to lugnet.robotics, lugnet.robotics.nxt, FTX)
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| | RE: Another Challenge. Performance Comparison
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(...) Here's my distilled summary of relative execution speeds of various Mindstorms products / environments. All data is normalized to the fastest performance. Relative Platform Product Speed 1X NXT RobotC 2X NXT Robolab 15X NXT NXT-G 5-10X RCX (...) (18 years ago, 21-Jan-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | RE: What do these macros do? [IOMAP Access Execution Times
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(...) You're right. IOMapRead and IOMapWrite are very slow functions. They're slow because you pass a character string for the name of the module you want to access; the NXT-G firmware runs through the list of modules looking for a match on the (...) (18 years ago, 21-Jan-07, to lugnet.robotics.nxt, lugnet.robotics)
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| | Re: This is the cancer that is killing Lugnet (Was Re: Apology)
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(...) ...//snip... ...snip// (...) In fact, the whole Internet is a wasteland !! Anybody can do anything there!! For me LUGNET/robotics is an excellent forum. I participate for several years now and I must appreciate the contributions of many (...) (18 years ago, 21-Jan-07, to lugnet.robotics, lugnet.robotics.nxt)
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| | This is the cancer that is killing Lugnet (Was Re: Apology)
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OK, so from what I can gather: 1) Someone asks a (URL) question>. 2) Steve tells her to make a (URL). 3) John knocks out a brownie-points (URL) comparison chart> in about ten minutes. 4) Steve, having intended to follow his own advice, loses his (...) (18 years ago, 21-Jan-07, to lugnet.robotics, lugnet.robotics.nxt, FTX)
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| | Re: What do these macros do?
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(...) Thanks for your response, John. That tip about the dirty flag not being IOMAPpable is very, very useful; I could have wasted a lot of time working that out the hard way. I'm working on a graphical display widget to show a 'radar' (well, sonar) (...) (18 years ago, 21-Jan-07, to lugnet.robotics.nxt, lugnet.robotics)
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| | Re: Apology
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(...) Ahhh, I see you are too ;) ROSCO (18 years ago, 21-Jan-07, to lugnet.robotics.nxt)
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| | Re: Apology
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(...) Ooooh... :^I - nose out of joint I do live on the North American continent. However, the word 'American' was hijacked by some country to the south of us. We up here in the 'Great White North' are *not* Americans. Rather we are... ummm... Well, (...) (18 years ago, 21-Jan-07, to lugnet.robotics.nxt)
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| | Re: Any experience with measuring rotations?
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(...) Well put quite simply... The probability of some event A occurring given that event B has occurred is equal to the probability of event B occurring given that event A has occurred, multiplied by the probability of event A occurring and divided (...) (18 years ago, 21-Jan-07, to lugnet.robotics.nxt, FTX)
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| | Re: Like A Rock Crawler Hauler
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"Steve Hassenplug" <steve@teamhassenplug.org> wrote in message news:6.2.3.4.0.20070...lug.org... (...) way, as my browser displays a 404 File Not Found error. It's title is Unload Truck 2. Other than that I liked the other videos and the pics of (...) (18 years ago, 21-Jan-07, to lugnet.robotics.nxt, lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: Any experience with measuring rotations?
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(...) What I need to do compute the average position of a number of items across the length of the teeter-totter (!). If, on average, they are in the middle, then there is no rotation and I should get zero. If there are more on the left than the (...) (18 years ago, 21-Jan-07, to lugnet.robotics.nxt)
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| | Re: Any experience with measuring rotations?
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(...) Thanks for the technical details, Claude. It's going to take me some time to get through this! Rafe (18 years ago, 21-Jan-07, to lugnet.robotics.nxt)
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| | Re: Any experience with measuring rotations?
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(...) Hi Tommy, This is a good idea; I'll try the ultrasonic sensor to see what it can do. Thanks! (18 years ago, 21-Jan-07, to lugnet.robotics.nxt)
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| | Re: Any experience with measuring rotations?
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(...) I made a sequence of stacked 1x2 plates, running from black to red, through green dark grey, light grey, tan, white, yellow, and orange on the way there. My nxt gave me reflected light values running from about 12 to about 52. The nine steps (...) (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Re: Like A Rock Crawler Hauler
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(...) Well, all my LEGO is tmeporarily put away for a three-year-old's birthday party, but this morning I finally got a Rock Crawler working... and it immediately stalled out in a pile of NXT kit spare parts :-( Sigh. At least it easily drives over (...) (18 years ago, 20-Jan-07, to lugnet.robotics.nxt, lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: Any experience with measuring rotations?
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(...) Well... there's two things here, and Steve solution actually addresses them both. Do you actually need a continual series of states, and the "weight" of the thing on the end of the beam, or just know if something *is* on the end of the beam? (...) (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Re: Any experience with measuring rotations?
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(...) In the document (URL) find a paper-disk with grey gradient. The document was part of my presentation at the 2005 Annual Robolab Conference in Austin/TX. There was a second part (URL) don't remember, if those documents ever have been available (...) (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Re: Any experience with measuring rotations?
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(...) I am not really an NXT guru, but seems the best way would be to simply measure the distance and calculate the angle. Tommy Armstrong (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Re: Any experience with measuring rotations?
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(...) I am not rally an NXT guru, but seems the best way would be to simply measure the distance and calculate the angle. Tommy Armstrong (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Re: Any experience with measuring rotations?
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(...) Don't mess with colors. Just use a gradient. You'll have a mostly linear set of values. With my black & white studs, there are also several shades of gray in between (like a little black & mostly white...) (...) no. :) Steve (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Re: Any experience with measuring rotations?
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(...) "It's foolproof!" (...) This sounds like a good idea. I'm thinking I'm going to have to work out a sequence of more than just two shades, but that's what weekends are for, right? So, if I could make of sequence of colors that have increasing (...) (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Re: Any experience with measuring rotations?
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(...) Easy. A light sensor. Point the sensor at a disk that's shaded from white to black. I've used that to detect the distance a robot is from a wall (wall following), using just a black & a white dot (1x1) which are moved in front of the sensor. (...) (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Any experience with measuring rotations?
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Hi all, I am working on a "project" where I want to measure some reasonably small rotations, things on the order of +/- 10 degrees or less. Just to make it hard, the force acting on the thing being rotated is small, like, completely hypothetically, (...) (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Re: Like A Rock Crawler Hauler
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(...) Very cool Steve... I can also atest the turn radius will stink since I did the same mod to the red tow truck set last year. You said you are using old style light sensors...Interfacing them to the NXT with the converter cables I assume? B (18 years ago, 20-Jan-07, to lugnet.robotics.nxt, lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: Text Based Programming for NXT - pbLua is Available
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(...) Nothing, it restarts back to blank screen, samba clicking mode. (...) Same thing. I also tried pulling the batteries for a few seconds. Telling USB Probe to refresh. 100 different combinations of resetting with and without usb plugged in, (...) (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Re: Text Based Programming for NXT - pbLua is Available
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(...) Tony, thanks for the work so far. What happens if, after the firmware is loaded you do any of the following: 1. Reset the NXT (press reset for less than 1 second) 2. Unplug the USB cable, wait 5 seconds, and plug it back in again (...) Here's (...) (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Re: Text Based Programming for NXT - pbLua is Available
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Here are my notes on what I've been able to accomplish so far in OSX on my MacBookPro. Loading pbLua firmware on nxt running standard firmware: 1. plugin usb 2. rename nxt-lua.bin to nxt-lua.rfw 3. open NXT-G, goto Tools -> Update NXT Firmware. (...) (18 years ago, 20-Jan-07, to lugnet.robotics.nxt)
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| | Re: Apology
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(...) Uh, Dave. Aren't you an american? Last time I checked, Canada was on the top of the north American continent :^P Kevin (18 years ago, 19-Jan-07, to lugnet.robotics.nxt)
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| | Re: Text Based Programming for NXT - pbLua is Available
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(...) Ralph, I can wait for API-docs 8-) In the meantime I try to find out how USB-communication (with libusb and terminalemulation) can work on OSX (10.4.x) and Linux. Is the NXT acting like an USB-Modem (asynchronous communication) What are the (...) (18 years ago, 19-Jan-07, to lugnet.robotics.nxt)
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| | Re: Text Based Programming for NXT - pbLua is Available
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(...) I think pbLua is actually running. The problem is that the signon screen does not get displayed until the USB connection is made. Which is why I need to find out how USB enumeration happens on a Mac. The pbLua firmware makes the NXT look like (...) (18 years ago, 19-Jan-07, to lugnet.robotics.nxt)
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| | Re: Text Based Programming for NXT - pbLua is Available
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(...) I'm still building and finalizing the API. I should probably start posting some questions on this forum... Eventually I'd like to get the API and the Lua table out there but I need to get docs set up. If you can help with install instructions (...) (18 years ago, 19-Jan-07, to lugnet.robotics.nxt)
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| | Like A Rock Crawler Hauler
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We've been playing around with Rock Crawlers for a while, so I finally put up a web page with a bunch of pictures and descriptions on it. (URL) addition to my Rock Crawler (and a link to John's trucks), about half way down the page, there are (...) (18 years ago, 19-Jan-07, to lugnet.robotics.nxt, lugnet.robotics, lugnet.org.us.laflrc)
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| | Re: Text Based Programming for NXT - pbLua is Available
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(...) It sounds like you DID get it loaded right here. At this point, I believe you need to unplug the NXT from the USB, then reconnect it. (...) You need to reset the NXT. Press and hold the reset button for 5 seconds. Then, you should be able to (...) (18 years ago, 19-Jan-07, to lugnet.robotics.nxt)
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| | Re: Text Based Programming for NXT - pbLua is Available
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What is the method to load the pbLua firmware, preferably in OS X? It's a .bin file so NXT-G doesn't recognize it. I tried renaming it to a .rfw file and it succeeds but then gets stuck in samba click mode. Then I tried libnxt's fwflash, holding (...) (18 years ago, 19-Jan-07, to lugnet.robotics.nxt)
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| | Re: Apology
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(...) You know, if this was an international forum, you'd at least expect the second letter of Jürgen's name to print properly... Jason R (18 years ago, 18-Jan-07, to lugnet.robotics.nxt)
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| | Re: Text Based Programming for NXT - pbLua is Available
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Hi Ralph, it's great to see this. I'm eager to have a play. Apologies if I've been part of the bother with sending you emails. In releasing details of your toolset, are you revealing your source code too? Both would be an enormous help to people (...) (18 years ago, 18-Jan-07, to lugnet.robotics.nxt)
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| | Re: Apology
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(...) Double A-Hem! Dave K (18 years ago, 18-Jan-07, to lugnet.robotics.nxt)
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| | Re: Apology
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(...) Ahem. Jürgen (18 years ago, 18-Jan-07, to lugnet.robotics.nxt)
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