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Disabling PTP via gPhoto?

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linux-howto

http://stackoverflow.com – I have an old Canon Powershot A480 which I hacked up and soldered some leads onto the shutter release button. I wired up an Arduino Nano to a relay and I'm able to remotely control the shutter. Rad. The problem is that I want to get the pictures from the camera as they're captured, but as soon as you plug in the USB cable, the regular camera functions become unavailable. Remote capture via gPhoto is unavailable with this camera. I thought of disabling the USB port while taking photos, but you can't do that any more as of kernel 3.0. I really don't want to hack up a USB cable so I can wire in (HowTos)