11-03-2009, 12:16 PM
Shane, I'm not sure if this will be any help, but the first thing that sprang to mind for me was to use a "wall wart" with an appropriate rating of, say, 1 volt. I'm not sure if such a device exists (when taking layout photos, I always run my camera from a similar 3 volt device that plugs into a regular 120 volt receptacle), but here's some INFO on working with such devices. I use a variable output (adjustable) wall wart to power my sole Tortoise switch machine, too. 
Wayne
Wayne