USB switch

[Joel Hammer]

I want to use the camera while it is still plugged into the cable.
This camera will be mounted over a work area (Don't ask what we work
on.). We will be taking photos of our work, and I want to upload them
to a computer attached to the other end of the cable after every couple
of photos.

With the appropriate daemons on the computer, as soon as the switch is
thrown so the camera is connected to the computer, the pictures will be
tranferred up to the computer, labelled, and stored in the appropriate
location. That's the general idea.

Joel

On Wed, Dec 24, 2003 at 04:51:42PM +0000, Alma J Wetzker wrote:
> Joel Hammer wrote:
> >I need to get a usb switch which performs an electrical disconnect,
> >similar to unplugging the USB device. 
> >
> >I have a camera with a USB port. When the USB cable is plugged into the
> >camera, the camera works as a camera. But, when the cable is plugged
> >into the USB port on the computer, then the camera becomes simply a
> >storage device. I can't take any pictures until the USB cable is
> >unplugged from the computer. 
> >
> >I bought a Belkin USB switch but as I feared, the switch is
> >intelligent. If I deselect the camera with the switch, the camera still
> >behaves just as a storage device.
> >
> >I have tried to remove the USB drivers with rmod, but even with the
> >drivers for the USB port removed, the camera still remains simply a USB
> >storage device.
> >
> >I have tried talking directly to several on line stores and manufacturers,
> >but their sales reps don't know anything technical.  And, they don't
> >get back to you with the information they promise.
> >
> >So, I am getting desperate. Does anyone know of a device, aside from
> >something I might custom build, that would do what I need? 
> >
> >Now that I think about it, how hard would it be to build something like
> >this? Building your own serial or parallel switch box is hard because
> >there are so many wires and they have to be carefully switched in a
> >certain sequence. Something to do with ground, whatever that is. But a
> >hot pluggable device might be easier. Does anybody know if building such
> >a switch box is easy?
> 
> Let me get this straight, if the camera gets power from a usb connection, 
> it acts strictly as a storage device.  You want to use the camera as a 
> camera while it is plugged into a hub or computer.  Is that the goal?
> 
>     -- Alma
> 
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