Mindstorm NXT problem with OS 10.4.9

I have installed the NXT software on a G3 iBook, running
OS 10.4.9. It has worked successfully in the past. When I last started the program, the "RoboCenter" part of the program was not there. Thinking that that portion somehow became corrupted, I attempted to reinstall the software to correct this. The installer will not let me install, because it says that I must 'upgrade to OS 10.3.9 before installing. Lego Tech support says it's an OS problem.
does anyone have any suggestions?

My response to Lego Tech is that they don't know how to conform to official specs for the interface being used to communicate with their hardware. Had they conformed to spec, an update would not cause problems.
Meanwhile you could try booting off an external hard drive that is running 10.4.8 or whichever version of Mac OS X was running well with it before and attempt reinstalling the software there.
In the future always backup before performing an update as my FAQ* explains:
http://www.macmaps.com/upgradefaq.html
That way if you run into a stubborn third party vendor who can't stick to specs, you can downgrade and use the operating system known to work with their hardware.
* Links to my pages may give me compensation.

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I am going to buy unlocked iphone 5.. i will be going to india nxt months and will stay there for a while... so my question is will i get warrenty in india.. and will there be any problem with using indian sims..?? thnx for the help..

i am going to buy unlocked iphone 5.. i will be going to india nxt months and will stay there for a while... so my question is will i get warrenty in india.. and will there be any problem with using indian sims..?? thnx for the help..

The warranty for the iPhone is not and has never been International.
Warranty and support are ONLY valid in the country of origin. The only exception is the EU where the entire EU is treated as one country.
If the device will be used in India, buy it in India.
An unlocked iPhone will work on any supported GSM carrier world wide. The LTE portion of a US purchased, unlocked iPhone is unlikely to work outside North America as it does not support the appropriate bands used in other countries.

Need assistance installing MindStorm NXT module on my desktop with Win XP and also my laptop which runs Win 7, software does not want to install?

I need assistance to install LabView MindStorm NXT module in a Desktop system with Win XP and a Laptop with Win7. Both are 32 bit with all service packs applied. I purchased the academic version from a company called On-The-Hub.
Attempted to install but seems to reject my serial number?

Hi Rob,
Thats really strange because the NXT Module 2010 and the NXT Module 2011 are free and don't require serial numbers. Where did you obtain the installer? The core LabVIEW installer requires a serial number but if you already have that installed, the NXT Module is just a free addon. Here are the links to the module for LabVIEW 2010 & 2011
NXT Module 2011 : http://joule.ni.com/nidu/cds/view/p/id/2637/lang/en
NXT Module 2010: http://joule.ni.com/nidu/cds/view/p/id/2551/lang/en

Blutooth connection with the robot Lego Mindstorms NXT

Hi,
I have got a license for Bluetooth Stack for Windows by Toshiba.
I try to connect to the Lego robot, Mindstorms NXT : http://mindstorms.lego.com/en-us/default.aspx
But it does not work.
The connection seems to be good and both NXT and PC find each other, but when I try to communicate, the NXT says "line is busy".
Does somebody can tell me if he can get through this issue ?
Does Toshiba and Lego have a deal about connecting issues ?
Thank you.

Hello
Do you have Toshiba notebook or you just use Toshiba BT stack?
How to get through this issue? Should someone of us spent 250 Euros to buy this and test it at home? Dear oracid this is user-to-user forum and you can get some help from someone who has identical hardware at home and can help you with his experience.
Deal between Toshiba and Lego in my opinion there is no deal. Every manufacturer who build hardware and want to use BT must know how this works. On the hardware market there are specific specifications for each communication technology and what Toshiba do is to build and offer specified hardware.
In your case you should contact Lego support and ask for help. they have, probably, tested own stuff with different hardware platforms, operating systems and BT software so Lego should have enough experience with own products.

NXT bug with an array of non 32bit integers in a cluster

There is a bug in the NXT toolkit.
attached is an llb "non 32bit bug.vi" displays the problem.
If you create a constant which is an array of clusters with no 32 bit data the toolkit magles the creation of the constant. The first element in the array will be correct but the rest of it will be 0xFF for every byte.
Note that the problem does not happen if the array is created dynamically.
The VI runs corectly under windows but not when compiled for the NXT.
Thanks,
Amaury
Attachments:
non 32bit bug.llb ‏167 KB

Hi Amaury,
Thank you for the information. I have let R&D know, and they are looking into the issue.
If you have future questions regarding the LabVIEW Toolkit for LEGO® MINDSTORMS® NXT, the technical support forum is the LabVIEW Fans of LEGO board.
Thanks again for the feedback.
Jennifer R.
National Instruments
Applications Engineer

LabVIEW Toolkit for LEGO MINDSTORMS NXT bugs

When you find bugs in the toolkit, post them to this message thread.
This board will be regularly monitored by both NI Application Engineers and members of the development team.
Thanks for helping us create a better toolkit going forward.
John Field
MINDSTORMS Software Group Manager
LabVIEW R&D

Hi John,
Problem: Unsupported case structure values in NXT Toolkit VIs.
I think the problem is, that the VIs of the NXT Toolkit do not follow the restrictions of the Programming Guide of the NXT Toolkit. The programming Guide says at page 6 (Structures, Case Structure) that
“Only one specific value (or "Default) is allowed in the case selector lable for each subdiagram."
But for example the "PortSemaphore.AccessSemaphores.vi", which is part of the NXT Toolkit (and which is a Sub VI of "NXT_SyncUnlimited.vi") uses a Case Structure with the values “0, Default”, “1”, and “2”. This is only one example. I found many VIs in the NXT Toolkit which are using case structures with more than one specific value or with a “0, Default” value.
Why does the NXT Toolkit include VIs whitch are not programmed according to the Programming Guide of the NXT Toolkit?
How can I solve the problem? Do I have to modify each NXT-Vi with incorrect case structure values?
I am using LabVIEW 7.1 and NXT Firmware 10.3.
Regards
Manfred

Connecting LEGO mindstorms NXT to my computer

I am trying to learn Labview using the LEGO mindstorms NXT robot. I installed Labview 2009 and started working, but when I open the NXT terminal in the NXT module it claims that the NXT is not connected although it is (via USB). Any ideas ? Could this have to do with the fact that I am using Windows Vista ?
Thanks

This article is intended to indicate the installation and configuration process between LabVIEW and educational robot Lego Mindstorms NXT wirelessly, this will enable LabVIEW developers in having a mobile platform for the development of projects and autonomous robots, we need to install some programs the computer:
https://decibel.ni.com/content/docs/DOC-32448
Atom
Certified LabVIEW Associate Developer

LabVIEW Toolkit for LEGO MINDSTORMS NXT in Windows Vista

Anybody knows how install LabVIEW Toolkit for LEGO MINDSTORMS NXT with Windows Vista?. Installing it gives me an error that says 'The windows installer is corrupt. To attempt to resolve the issue, please register the engine by running regsvr32.exe on msi.dll'. But it doesn´t work.
Thanks in advance

The work around for this issue is to install each of the MSI files setup.exe calls when running the installer. I was able to reproduce this issue for the 1.0 toolkit I was unable to do so for the 2.0 toolkit. This being said the instructions bellow are for those of you who are running into this issue with the 2.0 toolkit.
Listed bellow are the MSIs you will need to run (shown here at their default location after the self extracting EXE has been run). You should run these MSI in the following order.
C:\National Instruments Downloads\LabVIEW\7.1\LabVIEW NXT Toolkit\2.0\Products\MetaUninstaller\MU\MetaUninstaller.msi
C:\National Instruments Downloads\LabVIEW\7.1\LabVIEW NXT Toolkit\2.0\Products\MDFSupport\MDF\MDFSupport.msi
C:\National Instruments Downloads\LabVIEW\7.1\LabVIEW NXT Toolkit\2.0\Products\MDFSupport\MDF\EULADepot.msi
C:\National Instruments Downloads\LabVIEW\7.1\LabVIEW NXT Toolkit\2.0\Products\LVLEGONXTTK\LVLEGONXTTK\LVLEGONXTTK.msi
C:\National Instruments Downloads\LabVIEW\7.1\LabVIEW NXT Toolkit\2.0\Products\LVLEGONXTTK_LV71\LVLEGONXTTK_LV71\LVLEGONXTTK_LV71.msi
C:\National Instruments Downloads\LabVIEW\7.1\LabVIEW NXT Toolkit\2.0\Products\NXT_Driver64\LegoMindstormsNXTdriver64.msi
A similar procedure can be used to install the 1.0 toolkit if need be. You can get the install order from the parts from the [Parts] section of the setup.ini.
Mark
LabVIEW R&D

System Identification and Transfer Function of the LEGO MINDSTORM NXT Robot

Can anybody please help with the below question.
Using your LabView interface, input different values of power and record the output value of the number of wheel rotations. You can convert the latter into speed by measuring the diameter of the wheel. Then, type ‘ident’ in the command line of Matlab to launch a graphical user interface for system identification. Using the data collected for input power and recorded speed, you can derive the transfer function for your robot in the Laplace domain.
You will notice that it is possible to approximate the transfer function to a first order system.
Add disturbance to your system such as wind drag, road profile or friction. You might want to model the disturbance as a sinusoidal waveform.
Analyse the system response in LabView in order to tune the response.
Finally, write a LabView program to test your controller.
Set both Integral and Derivative to 0
Increase the value for Proportional controller to 0.5, 0.8, 1, 1.1, 1.3, and 1.5
Select a suitable simulation stop time.
Compare each simulation results and draw some conclusions.
Record the steady-state error. Has it dropped to near zero?
Record the rise time. Has it decreased to less than 0.5 second? And for what values of Kp?
Check whether this response is realistic i.e. a real cruise control system generally cannot change the speed of the vehicle from 0 to 10m/s in less than 0.5 second.
Adjust the gain (Kp) to give a reasonable rise time and add an integral controller to eliminate the steady-state error.
Change both Kp and Ki and see what happens to the response. When you adjust the integral gain Ki, start with a small value since a large Ki can destabilise the response. (Ki =0.001, 0.002, 0.003, 0.004).
Then you need to adjust both the proportional gain Kp and the integral gain Ki to obtain the desired response. Record the values of Kp and Ki that can meet all the design criteria.
Write the PID-feedback control LabVIEW program as described above.
Does it work? Quantify! Show us it is working
Hand in a short report on the PID project on the cruise control of the LEGO MINDSTORM NXT Robot. Your report should contain an introduction to cruise control and uses of PID controllers, a brief explanation of how PID feedback control works. The printout of the Block Diagram and Front Panel of your LabVIEW program should be attached at the end of your report.
Put it all together. There are many questions that can be explored and written up in the result section. Be creative.
Here are some things that may be addressed: Check whether your system can stabilise speed to within 1%. What are the optimal PID parameters that you have found? Can you choose PID parameters to both reach the set speed quickly and also maintain the speed within good accuracy once the system has reached the set speed? Can you control the speed of small steps? Explain your results?

Thanks for that.
DanHarryman wrote:
HI ToolMonkey
You should be able to build control system to do this using PID control VIs. The following paper is a good place to start when working with PID systems.
http://www.ni.com/white-paper/6440/en
Let me know how you get on using some of the functions in this.
Thanks
Dan.H
UKAE

Labview 2009 Module Mobile And Lego Mindstorms NXT

Hi
I've installed the mobile toolkit in labview 2009 but when I created a new mobile project I didn't find the NXT Programmings category on menu.....
are they not supported?
I would like to control my nxt with my PDA through bluetooth.
Thanks in advance for help

Hi,
which NXT software did you exacly installed? LabVIEW Module for LEGO MINDSTORMS NXT or LabVIEW Toolkit?
I would like to be sure to have corretcly understood: in a mobile project, the function palette of a VI under a PDA target does not have the NXT palette, correct?
Bye!
Licia

Mindstorm NXT 2.0 on Windows 7, Fatal Error!! Required NIPathsDir property NIMDFMANIFESTDIR is undefined.

I'm getting this error when trying to install LEGOS Minstorm NXT 2.0 on Windows 7 on my home computer: Fatal Error!! Required NIPathsDir property NIMDFMANIFESTDIR is undefined.
It requires admin privileges, so I log on as admin. I've tried changing the Compatibility to Window XP Service Pack 2 or 3 and also chaning the Compatibility to use admini privileges.
I've found from solutions to similar errors posted on this website that it might be a problem with it not being able to find the My Documents folder.
There is a My Documents folder under the Admin user, but the target location is Documents, not My Documents. It won't let me change the target location to My Documents. I try copying the directory and changing the name by it won't let me.
I've tried part of a solution posted here:
http://forums.ni.com/ni/board/message?board.id=460&message.id=1000&query.id=7360616#M1000
I did everything except for the part about "You will need to make another package to add a My Documents folder to the local service user so that would be located in "C:\Documents and Settings\Local Service\My Documents"." because I didn't know how to do that. Plus, I think I would still run into the problem that the target location is not "My Documents", but I suppose I could just enter the target location as "Documents" if I knew how to specify it when I "make another package".

You really need to go to Legos for support. The only support here is with using LabVIEW with NXT.

Problems with transaction MD21

Hi experts, i have a problem with this transaction because every time i open it when i try to add the material text in the Modify layout button, when i hit ok no text appearts in the field, whant can i do?, thank you in advance.
kind regards

Hi
1) Create a Screen Variant in SHD0 with Additional Material Data ticked for MD21 transaction and assign to specific users.
2) After Entering MD21 in the Display Planning file entries screen click on Change lay out and save as default after selecting Material Description column
From nxt time onwards the user will get the Material Description in the Layout for the Selection criteria
Regards
Brahmaji

NI LabVIEW Toolkit for LEGO MINDSTORMS NXT

Labview 7.1.0と一緒に、タイトルのtool kitを使って、
LEGO MINDSTORMS　NXTを動かそうとしているのですが、
一括コンパイル、nxt tool kit 1.0.1 patchコピーを終え、
"Getting Started with the LabVIEW toolkit for LEGO MINDSTORMS NXT"（添付）
の最初の"Building a LabVIEW VI that Runs on the NXT"に従って、
作成したVIをNXT上で動かそうとしたのですが、
Debugボタンを押すと、コンパイル、ダウンロードまではうまくいくのですが、
ダウンロードされたプログラムがNXT上で動作せず、動かそうとすると、
NXT本体のディスプレイにFILE ERROR!と表示されます。
NXTのバージョンは、1.03で、
"LabVIEW Toolkit for LEGO® MINDSTORMS® NXT"を
一括コンパイルした際には、次のようなメッセージが表示されました。
#### Starting Mass Compile: 2008年7月2日 18:41:42
Directory: "C:\Program Files\National Instruments\LabVIEW 7.1\vi.lib\addons"
Failed to load (C:\Program Files\National Instruments\LabVIEW 7.1\vi.lib\addons\NXTToolkit\shared\NXTToolkit.GetRelevantContexts_8_0.vi)
Failed to load (C:\Program Files\National Instruments\LabVIEW 7.1\vi.lib\addons\NXTToolkit\shared\NXTToolkit.OpenVIRefInContext_8_0.vi)
Failed to load (C:\Program Files\National Instruments\LabVIEW 7.1\vi.lib\addons\NXTToolkit\shared\NXTToolkit.RemoveScrollbars_8_0.vi)
#### Finished Mass Compile: 2008年7月2日 18:42:58
Labview 7.1では関係ないのかなと思っているのですが、関係あるでしょうか？
その他でも、不具合原因について、心当たりのある方がいらっしゃいましたら、
アドバイス頂ければ幸いです。
小松崎
添付:
LabVIEW_Toolkit_for_LMS_NXT_Getting_Started_Guide.pdf ‏201 KB

I do know of this one software where you can simulate the NXT, but it might only be for NXT-G programs.
SimplySim at The NXT Step
Other than that I don't think there's any way.
As for the difference between the two, there's a whole ton. Those are two different programs with very different syntaxes. Lego NXT-G is the basic software that comes with the NXT kit. It's a very scaled down version of LabVIEW and is pretty nice. LabVIEW is much more advanced and you can do much more with it, but you are restricted to using the LabVIEW NXT Toolkit and the NXT's cababilities. (no float, only so much RAM, etc.). But you can still do a ton more with it. Yes, you can data log with LabVIEW in, like, many ways.
Hope that helps!

Linux labview eval version for lego mindstorms nxt

Hi,
I'm a high school teacher in Tamil Nadu, India. Our school recently purchased 4 lego mindstorm NXT kits. We were happy to find that the new software was powered by labview, because it runs on linux. Our school runs on an Edubuntu LTSP network. So we were sad when we discovered the installation disk only supported MacOS and Windows.
I looked at the labview site for NXT and saw that we could get a student evaluation copy for use with NXT - so I filled out the forms, but when the link to the FTP site was given, it only provided a Windows and MacOS copy.
Can we obtain a student copy of labview for Linux for use with our NXT kits?
Thank you, Jason Stewart.

Hello Jason,
I'm sorry I didn't make this more clear in my previous post, but the LabVIEW Student Edition for use with LEGO® MINDSTORMS® NXT is only available for Windows. This will provide you with the LabVIEW 7.1 Student Edition and then you can download the LabVIEW Toolkit for LEGO® MINDSTORMS® NXT. This will give you the ability to create custom NXT blocks in LabVIEW.
Another option would be to purchase the latest LabVIEW Student Edition and then download the LabVIEW Toolkit for NXT. However, this edition is also only available for Windows. The customers that are downloading the LabVIEW Toolkit for LEGO® MINDSTORMS® NXT on a Mac OS have purchased the full version of LabVIEW for Mac.
Your best option would be to contact the NI India Sales Office at [email protected] or 91 80-4119 0000. They would be able to help you best with this.
Regards,
Clint M

Is Lego Mindstorms NXT 2.0 Mountain Lion Compatible?

Is Lego Mindstorms NXT 2.0 software compatible with Mountain Lion?
My son saved money for a long time and finally last week had enought to buy NXT.
I'd like to upgrade my Lion to Mountain Lion but since this NXT is the most important thing in house at the moment I don't want to ruin the experience with uncompatible OS.

I spoke at length with someone at Lego Mindstorms support. Unfortunately I didn't think to get his name.
He indicated that its a known crash with the NXT software and Mountain Lion bluetooth. However, he was unable to give me any encouragement regarding when it would get fixed. In particular, he indicated there is also a known issue communicating using broadcom bluetooth chipset which is used in Macs for the last several years. He said the NXT software has been broken talking to broadcom devices since 2007. Five years and no fix.
He indicated the software is a version of Labview written by National Instruments.
I've checked my systems. My 2012 Macbook Air and 2011 Mini use broadcom chips, while my 2007 white macbook has "cambridge silicon radio". I am able to communicate using my 2007 white macbook running snow leopard.
Overall I can't say I'm happy with Lego's response. It essentially sounds like their software has been broken for years and they haven't bothered to fix it. I'm personally in a bind since the system we had envisioned using for first lego league isn't practical to use without bluetooth. I realize bluetooth can't be used in competition.
It doesn't seem the Lego supports their NXT software well nor the Mac platform.

Mindstorm NXT problem with OS 10.4.9

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