Extend USB cable over the air?

Hi all,

I am looking for a solution to extend a USB connection over the air and
to make it wireless, but without the devices noticing.

Lets say I have 1 device lika a Tablet: Device

And I have a host it is connected to over a USB cable. Like a PC: Host

At the moment my connection is like follows:

---------- -------------

Host | ----- USB Cable ----- | Device |

---------- -------------

I would like the device to be connected over the air. This to not have
the USB cable.

---------- ------------- ------------- -----------

Host | | Dongle | AIR | Dongle | | Device|

---------- ------------- ------------- -----------

Does someone know, if there are such dongles I could attached to the USB
ports and which transparently bridge the USB signal using Wireless or
Bluetooth? I asked Google but it doesn't give me any usable answers :frowning:

Patrick

Maybe USB over IP might work. Caveat: I haven't used it myself, so I don't
know how well it works.

Also, It might depend on the USB class device in use; I can't see a USB
isochronous transfers working very well over IP over 802.11, but it might be
worth a shot.

The USB device will have to be connected to another USB host that might as
well be a RaPi.

Just my (untested ones) 2 pence.
Thomas

Ciao Patrick,

Does it reallu have to be USB? Why?

Daniele

attachment.htm (1.75 KB)

I am looking for a solution to extend a USB connection over the air and
to make it wireless, but without the devices noticing.

Maybe USB over IP might work. Caveat: I haven't used it myself, so I don't
know how well it works.

I have seen there are solutions which convert USB into Ethernet and than
back to USB. But all of them use a Ethernet cable.

As far as I understood the idea is to extend the reach of USB.

My use case is to have no cables.

Also, It might depend on the USB class device in use; I can't see a USB
isochronous transfers working very well over IP over 802.11, but it might be
worth a shot.

The USB device will have to be connected to another USB host that might as
well be a RaPi.

It's interesting that there are no products on the market yet.

Patrick

Hi Daniele,

Does it reallu have to be USB? Why?

The use case is the following.

In the TestingMachine.eu project we are testing web sites on different
devices. On PCs, LapTops, SmartPhones, Tablets, SMART-TVs, ...

The tablets are tested through the AVD as a virtual device, that means a
simulation. And also as real world devices as tablets attached through
USB to a PC which pushes the tests to the tablet device.

Now we would like to not have cables but to connect the tablet to the
testing machine over the air.

As you can see, Shaun has maybe found a possible solution[1] where the
adb connects over wireless instead of over usb. But this seams kind of
intrusive on the device side.

If we instead just have a USB cable, which incorporates a wireless/bt
bridge, the device and the host would not have to know anything and go
on working like before.

[1] Connect to adb via wireless - root access might be required · Issue #35 · tis-innovation-park/tm-vmm · GitHub

Happy hacking!
Patrick

That's what I suspected...

Why not use the standard adb over network? It works over any network connection and it works really well over WiFi from my experience.

Hth,
Daniele

attachment.htm (2.09 KB)

We should try it out. I thought it is not a standard feature.

Thank you!
Patrick

That's what I suspected...

Why not use the standard adb over network? It works over any network
connection and it works really well over WiFi from my experience.

We should try it out. I thought it is not a standard feature.

It is :slight_smile: http://developer.android.com/tools/help/adb.html#wireless

Thank you!
Patrick

Ciao!
Daniele

I added the link to the issue opened by Shaun:

Thanks!
Patrick

usbredir[1] + some "usb collector" (raspberry, laptop, ..) ?

[1]: http://www.spice-space.org/page/UsbRedir packaged in almost all
     major distro

but for adb, adb over wireless should just work :slight_smile:

ciao,
I.

Addendum:
http://www.kvms.com/Product/00-00228G.aspx

Not a dongle and not cheap, but ..

ciao,
I.

Thanks!
Patrick

Yes, this looks somehow like what I had in mind. Its just bigger and
more expensive :stuck_out_tongue:

Thanks
Patrick

<mumble>
For keybord & mouse we allready got over-the-air dongles; may this rise ideas?
</mumble>

diego