Modify A Program To Control A Usb Relay Device
Mar 30, 2010
We are trying to modify a program to control a usb relay device. Essentially what the program originally does is give you a series of check boxes that you check to make the relay fire. We tried to modify the code so that the box is checked after 5 seconds using a counter and an if statement. It works, but only partially, what happens is the check box shows a check, but the even that is normally triggered does not happen. [code]
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Apr 25, 2012
i wrote some code to control an ip device, i made in windows forms application , silverlight and asp.net, they all work on the local network , but won't work from internet web server, i have the router forwarding to local device ip and port,
i get this error:
A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 226.45.306.158:4999
here's the code used
Private Function SendRelayCommandTest(ByVal e As String) As String
'SendTextToIP("setstate,1:" & thePort & "," & TheState)
'Dim IPHostCC1 As String = "192.168.1.105"
[Code]....
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Aug 31, 2009
For example how do u delete on row <tr> in a table <table>?how do you remove a <img /> entry?
by remove means not just set the innerText to?
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May 23, 2011
Is there any code I can use in controlling a relay through a usb port using vb.net. I have to control some cylinders. So i have to use the relays and control them. For that I need to communicate through USB.
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Oct 26, 2009
im new around here and also to VB.NET infact any aspect of programming, im hoping to be able to some useful stuff but at the momment im a little stuck i only have basic knoweldge so anyway here goes im programming in VB.NET 2008 Express edition, im also using inpout32.dll which is running ok and also controlling the parallel port fine.the problem i have is as follows the program so far is controlling the 8 outputs at the momment, i can turn each individual one on but when i try to turn multiple outputs on it will only turn on one and the other that was turned on goes off i understand its controlled in a 255 bit array but how to decode it is a little tough
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Mar 27, 2010
currently doing a college project called Home Appliances System by using Voice Command.I have done the voice command part and now it comes to the interfacing between PC and relay board part. Currently I'm considering using USB port to send data(to trigger the home application). Does anyone know how to do it with VB.net?
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Jul 10, 2009
I am controlling a relay board via a COM port, no problems. I need to connect to an IP connection, and read data from the server, after sending a username and password. Depending on the data, will depend on what relay I am going to switch.Now I have no idea where to start, I have a document that explains how I need to connect to the IP interface, and what data to expect.
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May 5, 2010
how can i make my program feel if any device or usb device plugged into the computer or unplugged.url...
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Feb 5, 2009
Anyone ever try and create a program in visual basic that interfaced with an USB device? For example say I want to build a clock but I want to have the software to control this through usb. I want to write the clock setting program that tells the clock what to set for time and date and things like that.
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Mar 23, 2009
i have 2 windows forms, form1 and form2.form1 has a label called "label1" and a button called "button1".This button when pressed, opens up Form2.Form2 has a textbox, "textbox1" and a button. This button, called "button2", when clicked does this:form1.label1.text=textbox1.textThis used to work PERFECTLY, but now it does not work! i dont know what went wrong, and ive made a lot of changes to the project so i cant track the last time it worked.
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Sep 28, 2010
I am attaching a working program. But in this program i need to do some changes
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Mar 16, 2011
I've been dealing with this kind of problem in many cases now, I try to edit the properties of a button or a label or smth else from a backgroundworker or a timer and I would get the "Cross-thread operation not valid: Control 'Label' accessed from a thread other than the thread it was created on." Now what I am dealing with in the backgroundworker is 3 things: reading/writing to labels' names, editing the checked state of some checkboxes and changing the enabled property of some buttons/pictureboxes. Check the screenshot for more info.
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Dec 6, 2009
Is it possible? Self modifying codes based on users choices.
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Aug 1, 2009
How would i create a remote control device so i could access any pc with this software and view there screens, share files, etc.
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Oct 13, 2008
I want to select either "Wave" or "What U Hear" or "Microphone" or "Analog Mix" (LineIn) in the Windows Recording Control applet, i.e. as if I clicked the applicable "Select" checkbox.
I got this VB6 code on the Net (not sure where) and tried to convert it to VB2008. It is very near to correct I think, but the last part does not work.
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Aug 31, 2009
For example how do u delete on row in a table?how do you remove a <img /> entry?
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Apr 18, 2010
CODE:
When the program runs out to the red code, it clewed error, the error screenshot shown as Figure 1.
I want to ask the wrong place, and how to modify the program.
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Jan 17, 2010
How can I Tell Visual Basic or Studio to alter the entry point other that its default one(The first Form)[url]....
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May 15, 2012
Let say I have the following classes[code]...
If I wanted to say, alter the code definition of the automatic property X (at runtime, perhaps in Sub New), such that I could throw the PropertyChanged event
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Mar 31, 2010
I wonder if there is a Terminal Program available for us to modify and use that has changable parts of:
[Code]...
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Jun 24, 2009
I have a project, let's call it myproject and it's in the folder, myproject (VB2008>projects>myproject)
I want to eventually open this project and make some changes to it and the end result is that I will have a new piece of software.
So, here's what I do I copy the folder myproject to the desktop, rename it projectb and put back in the projects directory. (VB2008>projects>projectb)
Now, I can make any changes I want to the program and save to the projectb folder, BUT all of the entities (form, design view,settings etc) will still have the original name of myproject.* (and there's nothing you can do about it?) Is this the case? I don't see how you change the name of the "individual parts".
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Jul 21, 2009
I dont know how 2 develop PDA system... using vb.net
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Mar 14, 2012
Currently, i am trying to connect the EPP (Encrypted Pin Pad ) device to my computer by using mscomm control. May i know what are the possibility problems may cause the DSRHolding does not return to "True"?
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Apr 22, 2010
Example On my pc I have one application and on a tablet, running on 7, I have the other app. I want to control buttons in the app on my pc from the tablet device app. How to do this?
[Code]....
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Nov 30, 2010
I am trying to read data from an external device using MSComm control but the problem is I am getting wrong data. I am recieving 1 byte data but the first three bits are wrong so anything greater than 31 sent from the external devices is recieved wrongly. eg. if I am sending 63(111111) from the device then the input from MSComm control gives me 159(10011111).Due to this reason I tried SerialPort from .Net framework and was surprised to see that it is working properly.
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Nov 13, 2009
A Problem in accessing a device from VB Windows cannot load the device driver for this hardware because there is a duplicate device already running in the system. (Code 42) This error is because i am using 2 devices of the same company which has the mass usb storage on it and when i install one of the device the other hides. So one is detected the Other is not. It also give a error called designed dragnonacally something...
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Jul 22, 2011
I make an application and make setup file using VS setup project. This work fine and create default text files into Program Files Folder for winodw 7/vista .but can not modify these files or create any new files.There are few text files need to create ,modify during application running ,but in windows 7/vista unable to create,modify files.I am using full default admin right for these OS. If iuse C: root path then application work fine or for win XP no problem.I think UAC restricting to perform these opeartion. But i do not know how to change these restriction using vb.net, whenever application start.
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Jun 12, 2011
I have created a program that allows me to remotely access computers on my network (not all done by me i found some code online) however i want to modify that program to allow me to connect to computers not on my network. How can i go about doing this? My program consists of a client and a server. When the server runs it listens for the client on the client side i enter the IP address and it connects so i can send remote commands to the remote system.
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May 1, 2011
Is there a way to override/modify/create the left-side shortcut buttons in the SaveFileDialog or OpenFileDialog controls? Defaults are "My Recent Documents", "Desktop", "My Documents", "My Computer", "My Network"... how would I change "My Recent Documents" to "My Super Cool Folder"?
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Jan 7, 2010
I have a .net application running on a symbol mc75 (motorola) using the scanner. I am now trying to add functionality for the camera and I am running into issues.
To find the 'devices' you are supposed to use the library's 'available devices' function.
With the barcode it is symbol.barcode.devices.availabledevices and it returns two items (you can scan from the scanner or using the camera device) However, when I do the camera library it does not find any devices - symbol.imaging.devices.availabledevices returns 0
I can take a picture using the software on the mc75, so I know the functionality is there, I just can't figure out how to get to it programmatically..
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