Using lab view to control an Arduino led cube

Has anyone used lab view to control an Arduino led cube? It seems to me that you could make a pretty awesome project out of the two.

Hi there, I haven't done it my self but, you may find a tread at the LabVIEW Interface for Arduino Group including links to download the LabVIEW Interface for Arduino Toolkit . I think this will make the task easier. Good luck!
Alejandro | Academic Program Engineer | National Instruments

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Hidden Report Viewer Confiugration Error on aspx pages that use report viewer web control

I try to fix the problem. The error below is embedded on aspx pages that use report viewer web control. Please note that the div element is hidden, and the reportviewer is displaying correct contents.
Div element hidden on aspx page
<div id="ReportViewer1_HttpHandlerMissingErrorMessage" style="border-color:Red;border-width:2px;border-style:Solid;padding:10px;display:none;font-size:.85em;">
<h2>
Report Viewer Configuration Error
</h2><p>The Report Viewer Web Control HTTP Handler has not been registered in the application's web.config file. Add <add verb="*" path="Reserved.ReportViewerWebControl.axd" type = "Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /> to the system.web/httpHandlers section of the web.config file, or add <add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /> to the system.webServer/handlers section for Internet Information Services 7 or later.</p>
</div>
I tried adding the two elements to web.config, but to no avail.
Add below to system.web/httpHandlers
<add verb="*" path="Reserved.ReportViewerWebControl.axd" type = "Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
or add below to system.webServer/handlers for Internet Information Services 7 or later.
<add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
The required assemblies below are installed under C:\Windows\assembly folder. I have installed both Microsoft ReportViewer 2010 Redistributable, and 2008 SP1.
Microsoft.ReportViewer.WebForms, version 10
Microsoft.ReportViewer.Common, version 10
Below is the whole web.config:
<?xml version="1.0" encoding="utf-8"?>

<configuration>
<connectionStrings>
<add name="ApplicationServices" connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnetdb.mdf;User Instance=true" providerName="System.Data.SqlClient" />
</connectionStrings>
<appSettings>
<add key="car" value="myCar" />

</appSettings>
<system.web>
<httpHandlers>
<add verb = "*" path = "Reserved.ReportViewerWebControl.axd" type = "Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />

</httpHandlers>
<compilation debug="true" targetFramework="4.0">
<assemblies>
<add assembly="Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="Microsoft.ReportViewer.Common, Version=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="Microsoft.Build.Framework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.Management, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
</assemblies>
<buildProviders>
<add extension=".rdlc" type="Microsoft.Reporting.RdlBuildProvider, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
</buildProviders>
</compilation>
<authentication mode="Forms">
<forms loginUrl="~/Account/Login.aspx" timeout="2880" />
</authentication>
<membership>
<providers>
<clear />
<add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider" connectionStringName="ApplicationServices" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/" />
</providers>
</membership>
<profile>
<providers>
<clear />
<add name="AspNetSqlProfileProvider" type="System.Web.Profile.SqlProfileProvider" connectionStringName="ApplicationServices" applicationName="/" />
</providers>
</profile>
<roleManager enabled="false">
<providers>
<clear />
<add name="AspNetSqlRoleProvider" type="System.Web.Security.SqlRoleProvider" connectionStringName="ApplicationServices" applicationName="/" />
<add name="AspNetWindowsTokenRoleProvider" type="System.Web.Security.WindowsTokenRoleProvider" applicationName="/" />
</providers>
</roleManager>
<pages>
<controls>
<add tagPrefix="ajaxToolkit" assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" />
</controls>
</pages>
</system.web>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true" />
<validation validateIntegratedModeConfiguration="false" />
<handlers>
<add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
</handlers>
<httpProtocol>
<customHeaders>
<remove name="X-Powered-By" />
</customHeaders>
</httpProtocol>
</system.webServer>
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="WebService1Soap" />
</basicHttpBinding>
</bindings>
<client>
<endpoint address="http://localhost:58269/WebService1.asmx" binding="basicHttpBinding"
bindingConfiguration="WebService1Soap" contract="ServiceReference1.WebService1Soap"
name="WebService1Soap" />
</client>
</system.serviceModel>
</configuration>
Any idea?
Update:
IIS is7.5, AppPool is Integrated.
I have tried below, none of them works:
1) Add it only to system.web\httpHanders. Changed AppPool to classic, still got hidden error.
2) Add it only to system.webServer\handlers. Integrated mode,still got hidden error.
3) Add both to both element. Integrated mode, still got hidden error.

Hi Kingofwebguru,
According to your description, when you use reportviewer control, you got the error message: The Report Viewer Web Control HTTP Handler has not been registered in the application's web.config file.
To troubleshoot the problem, please refer to the following steps:
Click Start, click Run, then type InetMgr.exe and click OK.
Click plus sign next to server name to expand it.
Click Application Pools in left pane.
In Application Pools list, click DefaultAppPool.
In the Actions pane, in Edit Application Pool section, click Edit Settings to check the Pipeline mode.
Configuration settings for the HTTP handlers are specified in the system.web/httpHandlers element and the system.webServer/handlers element. of your application Web.config file. The handler specified in system.web/httpHandler is used by Internet Information
Services (IIS) 6.0 or IIS 7.0 in Classic mode, whereas the handler specified in system.webServer/handlers is used by IIS 7.0 in Integrated mode. To use IIS 7.0 in Integrated mode, you must remove the HTTP handler in system.web/httpHandlers. Otherwise, IIS
will not run the application, but will display an error message instead.
For more information about Web.config Settings for ReportViewer, please refer to the following document:
http://msdn.microsoft.com/en-us/library/ms251661.aspx
If you have any more questions, please feel free to ask.
Thanks,
Wendy Fu
If you have any feedback on our support, please click
here.
Wendy Fu
TechNet Community Support

How do i activate a 3 way valve using lab-view ????

I am trying to automate a miniature punch press by connecting it to a computer having labview. this is done thro a 3 way valve which is in turn connected to an air compressor.
I would like to know how i wud be able to control the valve using lab view ?

Your question reads like;
"I would like to know how I can drive a car using my hands?"
Please provide the details on the value (inputs/outputs) and the type of hardware you are using to act on the valve.
Trying to help!
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
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How to shutdown the PC using Lab View

Hi,
We are doing UPS project. In this project we have to shutdown the PC if there is a battery low condition. I want to know whether is their any library function in Lab View to shutdown the PC. And also we want make this labview to run in background whenever PC turns ON, is their any way to make Lab View VI to run in background process. We are also planning to send UPS Status through SMS message to specified mobile number using modem, is their any way to do this using Lab View. Please help me in this regards.
Regards
Shivakumar Singh

Sorry
Attached now
"Qod natura non dat, Salmantica non praestat"
Attachments:
Shutdown_labview.zip ‏67 KB

Why does Lab View add control elements to some driver VI's!

Hi,
I have downloaded a driver project that was developed with Lab View 2009sp1. Now I will this project use with LV2010.
To do this I have the library installed in instr.lib. But when I opened some VI's I discovered that Lab View have added control elements.
Why is it so and how can I stop this behaviour?
Solved!
Go to Solution.

Surely that didnt just happen because you saved it in 2010. You downloaded a new set of drivers for 2010 from here: http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=AFAA2CBD85041C96E04400144F1EF8...
The second driver has more features.
Also, note that the two modes are different, in the second case you are specifying the current where as the first one is a constant current configuration for the load.
Beginner? Try LabVIEW Basics
Sharing bits of code? Try Snippets or LAVA Code Capture Tool
Have you tried Quick Drop?, Visit QD Community.

How to determine the slew rate of an amplifier using lab view

gud evening all
I have an op amp circuit built on the NI ELVIS board and I input a square wave from function generator to the circuit. I have to determine the slew rate of the op amp.In the labs, one would run the square wave over a range of frequencies and stop when the square wave looks like a triangular wave. At that frequency, one would then measure the slope of the signal and that will give you the slew rate. How can I do that in LabVIEW? How can I check when my square wave starts looking like a triangular wave? please help
good
good

thank you johnsold
i designed a voltage follower using 741, on an Ni elvis instrument. i can manually do the slew rate experiment by varying the frequency range on the coasre frequency knob( using a square wave) of the function generator until the slew rate occurs at 0.5volts, my problem is how can i do the same experiment with built in vi in labview with out touching the knob on the function generator and once the triangular wave starts to show the lab view program will automatically stop.
find attache my vi
good
Attachments:
slew rate.vi ‏21 KB

Dc input offset voltage, bias current using lab view

hi all
my lecture has asked me to write a lab vbiew program that can measure the 741 operational amplifer dc input offset volage, its bias current. i totally do not have an ideal how to do this because i am new to lab view programming.
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Hello augusta,
Many thanks for your post, I have some information that I think you will find useful.
The link below is a link to our LabVIEW Getting Started page that will allow you to get to grips with the LabVIEW environment and basic programming.
http://www.ni.com/gettingstarted/labviewbasics/
In terms of ELVIS, the following link may also help
http://zone.ni.com/devzone/cda/tut/p/id/12964
In terms of example coding, using the Find Examples from the LabVIEW getting started screen and then using Hardware Input and Output>> DAQmx>> and then selecting one of voltage examples there will also be if use.
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Liam A.
National Instruments
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Is it proper to use indexed views as the source of your cubes

I understand that you're supposed to use views as the source of your SSAS cube because it provides a layer of abstraction and allows you to make schema changes without adversely effecting the cube. I also know that when you have users accessing the warehouse
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"With schema binding, if the base object is bound to another object, you will not be able to modify the base object unless you drop or alter the object to remove the schema binding."
That seems to run contrary to the goal of abstraction, that is, if I'm reading that correctly. What am I missing?

You should use schema bound / indexed views very little. They have high overhead associated with them.
In order to change a base table referenced by a schema bound view, you must drop the view, make the change to the table and recreate the view (and any indexes). Depending on the change to the base table this may or may not have any affect on the view.
This is by design.

How to use lab view to do slew rate experiment

gud afternoon
I have an op am
p circuit built on the NI ELVIS board and I input a square wave from function generator to the circuit. I have to determine the slew rate of the op amp.In the labs, one would run the square wave over a range of frequencies and stop when the square wave looks like a triangular wave. At that frequency, one would then measure the slope of the signal and that will give you the slew rate. How can I do that in LabVIEW? How can I check when my square wave starts looking like a triangular wave? please help.............................................................................
good

moved to here

Can I use Lab view for agent based modelling?

Dear All,
I have a project to do, It is optimisation of cost for maintenance management in special type of contract.
I am looking to take an agent based modelling to do the project. I've just started using Labview and I'm not sure if I can do this type of modelling approach with Labview. Can someone please confirm that I can do it and also if its a familiar topic show me the first few steps.
Thanks,
Davood
Solved!
Go to Solution.

SebSieros wrote:
Hi Davood,
Could you please expand on what you mean by agent based modelling in detail and what exactly you are trying to accomplish?
I look forwoard to hearing from you.
Kind regards
Seb
Hi Seb,
What I am trying to accomplish is an optimised cost by trading-off between 3 main different area(Labour, Spare part and logistic). each area has its individual sections and sub sections. the important part is that there are plenty interactions between sections and subsections of 3 main area. in simple word project is : changing the cost for training and see the impact of it on total optimised cost or selecting supplier A which is providing item x cheaper than provider B by considering that for supplier A there is another logistic plan and method or sometimes more training is required and finally see what is going to happen to total optimised cost
I draw a simple conceptual framework to present the project more clearly. please see attachment. I'll be happy to clear any point if you need.
Attachments:
Project.png ‏105 KB

Is there a way using lab view objects to let an object that is contained within another object get access to its owner?

I've been playing with lvoop for 4 or 5 months now, and in general I like it very much, but I've repeatedly wanted to build classes that know something about who owns them and I can't figure out how to make this happen.
The simple example I've been thinking about is imagine having a person class which contains a car class. Now say that I get an instance of a car class and I want to ask it who its owner is. In C++, I'd do this by giving the car class a pointer to the person class it belongs to. (Of course you have to worry about car objects that don't belong to anyone in which case the pointer has to point to NULL.)
I've tried copying this idea by giving the car class a data value reference to a person class, but when I dereference the reference using an in place loop and call a method on it I get data from the moment the reference was made and not the current data of the person class.
I realize this is sorta breaking data flow so maybe it's not possible on purpose?

Scot18 wrote:
I've tried copying this idea by giving the car class a data value reference to a person class, but when I dereference the reference using an in place loop and call a method on it I get data from the moment the reference was made and not the current data of the person class.
Yes, LVOOP uses value based references, and when you split the wire to write the owner you created a data copy. The function you're after requires you do use a DVR for all class functions in which case you'll get reference based OOP, which is more familiar coming from text based OOP.
It just so happens that G# uses that approach, take a look at it.
/Y
LabVIEW 8.2 - 2014
"Only dead fish swim downstream" - "My life for Kudos!" - "Dumb people repeat old mistakes - smart ones create new ones."
G# - Free award winning reference based OOP for LV

Using Lab view ver 6,How can I read a cell of excel file right after I write to it

How can I read a specif cell of an Excel file using Labview VI.

Hi,
Attached is a LV6.1 VI which will read a cell.
It will be looking for a sub VI found in the example C:\Program Files\National Instruments\LabVIEW\examples\comm\ExcelExamples.llb.
The returned value is a string value but there is no reason why it couldn't be a number. Just connect a numeric to the type connector of the Variant to Data function.
Hope this helps.
Regards
Ray Farmer
Regards
Ray Farmer
Attachments:
Get_Cell_Value.vi ‏41 KB
Write_Table_To_XL.vi ‏101 KB

How to read analogue input signal in NI 9201 module using lab view

hi all
iam using Crio 9012 module for real time controller
nd iam using NI-9201 for input and NI9263 for output
i have configures cRIO 9012 on my Pc
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thanks
tc
Solved!
Go to Solution.

Hello,
I would recommend taking a look at the following examples in the LabVIEW Example Finder. If you go to help-->Find Examples, you will see this window. Just search for 9201 and you'll see these 2 examples:
Hope this helps!
Tejinder Gill
National Instruments
Applications Engineer
Visit ni.com/gettingstarted for step-by-step help in setting up your system.

How to use t-shark (wireshark ) using lab view??

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You can either setup wireshark to log that traffic and post process the log file or you will have to interface to the WinPCap driver that Wireshark is using to sniff the network traffic. There has been some work done to interface to WinPCap here in the past but the project has to my knowledge never gone to a fully fledged state, so I would expect you to have to do some work on that level too.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Hello, we are using Lab View, to run testers, for checking our production parts. At different times during testing we are getting an error message with a number indicating something.

The number appears to be different every time. The error will stop the test. Sometimes, the test will complete, but instead of passing or failing, we get an error message. Most times these keep comingup every other or every 3rd part.Most times we can reset the problem, and at least get rid of the errors for a while, by shutting down the whole system, including the main disconnect. Then powering back up. HELP!! This has been going on too long!!

What's the error number and message? Is it a LabVIEW error code or a user created one?

Using lab view to control an Arduino led cube

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