vb based relay control using usb port....

[jit_singh_tara]

Dear friends ,
I am new to pc side programming , I need to design something like this:

An application in vb which uses usb port of pc ,to connect to a hardware consisting of pic microcontroller (with usb support) to control 4 relays .

Please suggest me how to begin , what all i need to do on both:

1.PC side vb application
2.Microcontroller side usb interface, if i plan to use a usb controller of pic , then do i need to implement usb framework on it using microchip library.

Please sugggest..
thanks and regards.....

 

[bassa]

follow these literature to start

1.PC side vb application

http://sourceforge.net/projects/libusbdotnet/
http://www.developerfusion.com/article/84338/making-usb-c-friendly/


2.Microcontroller side usb interface

http://www.pyroelectro.com/tutorials/simple_pic_usb_interface/
http://www.microchip.com/forums/m235427.aspx
http://www.microchip.com/forums/m576375-print.aspx
**broken link removed**

 

[nikhildascl]

Instead of USB. use the RS232 interface. So, you can connect it using a USB-RS232 converter to Laptop or directly to PC via RS232 cable. Because of RS232 interface it is very easy to design the PC side application in VB

 

[enob]

I did something similar to this a long time ago. I created a module "porting.vb"

Module porting
    Public Declare Sub Out Lib "inpout32.dll" _
       Alias "Out32" (ByVal PortAddress As Integer, ByVal Value As Integer)
End Module

Then you can just make simple calls to it:

 porting.Out(888, 0)

This was for serial though, but it might help.

 

[Kuzito]

Hi,

Here is simple VB NET software for control USB Relay incl. source code

**broken link removed**

**broken link removed**

Source code:
**broken link removed**

 

[behnam9856]

libusb is good and works very well...

also u can use FT232 (usb to rs232 converter) if u wanna design it easily!