Component to switch multiple data lines?
What I think I need is something that will allow me to switch between four different data lines simultaneously but default to four other lines.
For example: Input 1 has four lines. Input 2 has four lines. There is one output with four lines.
Real World Problem:
I bought a digital picture frame for super cheap and didn't get a chance to research it. It is powered by a USB wall transformer. When the picture frame is receiving power from the wall, it displays the images. When it's plugged into the computer, it goes into update mode and mounts a drive that you can copy images to.
What I Want Now:
To be able to flip a switch and have it change from USB wall transformer to USB PC. So, from the above: input 1 = USB wall power, input 2 = PC USB, output = picture frame. The switch box would have a 2x USB Mini-A inputs and one USB Type A output.
What I Want Later:
I imagine it's trivial(?!) to change the physical switch out for a 555/556 timer and two potentiometers so that I can have set a Frequency and Duration of changing from the default wall power to the PC's USB power.
What I Get:
A picture frame that every x minutes switches to the PC for y minutes so that I can write an application to look for a newly mounted volume called KODAKFRAME (just an example) and create images for it of things like the latest news and weather or maybe even just change out the pictures for variety.
My Real Motives:
I'm an IT guy and would love to use this as an auxiliary display for info that isn't critically time sensitive such a free disk space, recently received FTP files, etc.
Thanks in advance,