Originally Posted By: sn00p
Originally Posted By: tfabris
Oh, one other thing:

Originally Posted By: TigerJimmy
I bought the shutter release, which connects via the mini-USB on the camera, installed the firmware, and it works fine.


Based on that description, we can't even be certain that the shutter release device is even a true USB device at all. It might just be something proprietary that *happens* to use the USB jack on the camera.

Yeah, a softer extension cable might be your better bet. Or a longer one, with the extension making a loop on the ground between you and the camera, to remove all vibration transfer.

Finally, you might find that, even after you do all of the above, that your problems aren't due to vibration from the shutter release cable. Maybe it's vibration from somewhere else, maybe even internal to the camera such as the shutter itself.


http://chdk.wikia.com/wiki/USB_Remote

Seems you're right. They're just switching in USB power to the USB port which the firmware detects as a "keypress".

All you really need is some sort of bluetooth IO module with corresponding pc/phone side app and the io module pins connected to the USB socket correctly.
Does not need to be Bluetooth.

Quickly scanning that linked CHDK material, it appears that any remote control that can cause a relay contact closure, or equivalent, will be enough.

The remote merely needs to provide a pulse of DC voltage to the mini USB input to the camera.

There are lots of remote controls sold for all manner of applications. Some online hunting should turn up some useful variants for this application.

It certainly seems that the simplest approach would be the use of a much longer USB cable.