Parallel Port And Relay Control?
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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Mar 11, 2010
i want to control pc parallel port using vb.net/vb6 , i need timer coding .
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Nov 1, 2009
I have written a programm with visual basic 2008 express edition and I'd like to use the parallel port to communicate with my self-made circuit. I want to controll 120 LEDs with the parallel port but I don't get it how. I know how to activate the databus but not how to activate the control lines of the parallel port.
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Oct 12, 2010
Can someone tell me if the functionallity to control a parallel port in MS VB 2010 Expess exists? I was expecting to have to add a reference such as the microsoft comm control 6.0. However this reference does not appear in the list. Everything I search for references .net 2005/2008.
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Oct 20, 2011
I am trying to get my 4 port USB relay board to work in VB.net using the COM PORT. I found some code from a poster who has the 16 port USB relay version. When trying his code i can only get it to turn on relays 1-3 all at the same time. The product can be found here: USB 4 port relay
"01+//" - Relay 1 is switched ON
"01-//" - Relay 1 is switched OFF
"02+//" - Relay 2 is switched ON
"02-//" - Relay 2 is switched OFF
[code].....
So i am confused as to how to separate each relay out with that code above and just be able to turn on any number 1-4 relay on or off independently from each other!
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Oct 20, 2011
I am trying to get my 4 port USB relay board to work in VB.net using the COM PORT. I found some code from a poster who has the 16 port USB relay version. When trying his code i can only get it to turn on relays 1-3 all at the same time. The product can be found here: USB 4 port relay I was following what the guy in the post was doing to turn his on:
[Code]...
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May 14, 2011
here is my code
Public
Class
Form1
[code].....
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Jun 9, 2010
I would like to detect the Address and Port number of the Parallel Port in computer.
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Dec 27, 2011
how to capture an on/off signal from a relay and count the seconds of elapsed time between the cycles on a com port? Also, which pins on the com port should be used for this?
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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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Dec 31, 2008
I use the following code to print to the receipt printer on the parallel port in vb 6.0, but it seems that it doesn't work on vb.net.[code]...
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Jul 14, 2011
How to call the parallel port with vb codes.I'm going to make a helicopter to control with my pc.
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May 31, 2010
i want to work with it in vb. 1st i want to check if port is already mapped or not, if not then map it and once done remove the mapping. The one way is using shell and pass command in it, but not sure how to get already map status and also wondering if there is any other method to get it done.n :)
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Apr 24, 2012
I have a program that connect to 2 printers at the same time. Ribbon Printer and Label printer.
I have set the ribbon printer to be the default printer of the server so that normal document printing can be printed using it. This is very simple and i already finsih the code for it.
However i have a Parallel printer at Port LPT1 which i wish to use it to print label. I have search online but find no solution on how to open connection to LPT1 and print the document in coding.What i can find i only send a window command to the port LPT
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Dec 29, 2010
i need to interface an spi analog switches using either a parallel or serial port. Is this possible?
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Jul 4, 2010
I am new to VB and am needing to write to the parallel port. I am using a laptop so have got a USB to parallel port converter and need to know how to write to it using VB (I am using Visual Basic Express 2010)
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Sep 18, 2010
I need to program Parallel port. For accessing port I used inpout32.dll but it is not working with windows 7.
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Oct 14, 2010
In my project I was using Parallel port to drive a relay circuit with the help of inpout32.dll. But as we all know nowadays parallel ports are getting extinct and USB is getting replaced in its place. Is there any other means I could adapt for driving external circuits from PC, instead of using Parallel Port
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Jun 18, 2012
I've been trying to this application in Visual Studio 2010 to only write to the parallel port, so supposedly it would be a very easy task, and by all the tutorials in the internet i've seen before it really is! Although it throws me always the same error which is too generic and don't give enough information for me to solve it. I'm doing this using the "Inpout32.dll" library to make the communication between VB.NET and the port..
[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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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 25, 2009
I have created a program using inpout32.dll to run my stepper motor . I can run stepper motor now but the problem is that it is running very slow! is there any better way i can run my motor fast as i want.
i used following method.
option explicit on
Dim myTime as object
public sub Form1
[Code]....
if i set the value of mytime less then 2000 my motor does'nt work at all. i tried also with the timer tool and i wrote the code in the tick event of timer but it is also very slow.
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Nov 24, 2009
I have written a programm with visual basic 2008 express edition and I'd like to use the parallel port to communicate with my self-made circuit. I want to controll 120 LEDs with the parallel port but I don't get it how. I know how to activate the databus but not how to activate the controle lines of the parallel port.
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Mar 11, 2011
Does anyone have experience writing data to the parallel port (printer port) in Windows 7 64-bit. I have been trying inpout32.dll, inpoutx64.dll and following all the info on http://www.highrez.co.uk/ and www.logix4u.net but can't get anything to work. I have an on-board parallel port at &H378 - not an add-on card - and have tried various modes in the BIOS (standard, ECP etc). I have a background in electronics so I am confident my testing methods are sound; I just cannot get a data bit to change state under program control. I need to send data to an 8-bit port on some 20th Century electronics so serial/USB interfaces are not really an option. There must be a way to control those 8 data bits in Windows 7, mustn't there?
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Dec 18, 2011
I have a fairly old radio receiver. (Icom R70) A friend and I have built an interface to control it from my computer. The interface is parallel. For me the interface is a black box. (My friend is the electronics specialist) In the description (25 years or more old) the statement to set a frequency and receive mode (like Am, FM etc) on the receiver is:print ".0:087330"
Today I am working in VB.Net and on Windows7 pro. I have already spent several days figuring out how to do this, but can't get it to work.I have found inpout.dll, but that does only allows me to write one byte at the time, and if I break up the above string and send nine individual characters, it does not work.
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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 3, 2011
What i want it to do is 'listen' to the lpt port, when a sensor is broken then display the time. there are two sensor to measure the time of the first and then the second sensor.How do i get VB to listen to the sensors which are on two different inputs of the lpt port and time stamp in micro seconds. I can get it to read the state of the input on mouse click but i need it to display the time in micro seconds when the input changes. i will then use the times from the two sensors to work out the time it took between both sensor changing.
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Jan 26, 2012
I'd try programming in vb.net with a usb to parallel printer but it doesn't appear as LPT Port Device. It show as a USB Printer Support in USB Controller. Just to receive and send a bit in different pin to be in servo controller/driver.
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Dec 19, 2011
I want to control the D0-D7 pins of the parallel port(LPT) with VB2010. I do not need to transfer or receive data via this port, all I want is to set high or low (5V or 0V).Is it even possible?
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