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UBASIC/Scripts: Cable Release

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Cable Release Edit

NOTE
This script is now obsolete! Thanks to the fantastic new addition of the USB Remote Cable Release function recently added! (note added by original author)


Written for/on: S3 IS
Also works on: Easy to modify for any of them.

There's no really easy way to add a cable-release to these cameras. The shutter-button on them is at an odd angle, with very little in the body-design to allow you to easily add a cable-release socket near the shutter-button. So, I got to thinking ... there's tons of other buttons on the camera that are much easier to reach with a very simple bracket screwed into the tripod socket. Using the scripting commands I rerouted the shutter-release button to the [DISP] button on my S3. As that one is nearest the tripod socket. A very small right-angle bracket a little over an inch-long, with one hole for a 1/4-20 bolt and another hole with threads cut for a mechanical cable-release ... bingo! I have a simple, small, easy to fit in my camera-bag cable-release! I put a small bit of rubber over the cable-release bracket threaded opening, so as not to mar my [DISP] button when the end of the cable-release hits it. It needs so little movement to press that button that the cable-release flexes the rubber-guard nicely to do just that.

If you want to modify it for your camera's particular button-layout, just replace the is_key x "display" line with whatever button other than the "display" button that you want to press as your alternate shutter-button, preferably the one nearest your tripod socket, Refer to the scripting tutorial for available button-names that you can use. And then using a cable-release and home-made bracket to reach that button.

Documentation/Help (save as a small "cbl_rls.txt" file to your /CHDK/SCRIPTS/ folder)


Attach your home-made cable-release mount to your camera so the cable-release end is over your [DISP] button on the back of the camera. Load, then run the script by pressing the shutter button. As long as the script is running your [DISP] button will act as your shutter-button. To end the script press your REAL shutter-button again.


Script Code (save as "cbl_rls.bas" to your /CHDK/SCRIPTS/ folder)

@title Cable Release

:press
wait_click
is_key x "display"
if x=1 then shoot
goto "press"

One small drawback, and I'm not sure how to get around it. When using my cable-release with this script, there's about a 2.5 to 3 second delay between pressing the [DISP] button and the camera actually taking the photo. (Does anyone know how to speed that up?)

I'll upload a photo of the bracket that I made for this after I get some flat-black paint to make it look nicer.

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