I'd like to do something quite simple ... in my mind.
I've got an "old" photo frame with an usb port and SD card slot (but without networking) that I would like to keep in sync with my NAS "Photo folder"
Since I'm looking forward to buy a PI, I'd like to know how I could achieve this ... in a cheap way ($ and computing power).
My main guess would be to connect both on USB.
Looking at other answers I found Serve up PC hard drive as USB mass storage and What is a USB WiFi dongle device that can emulate virtual mass storage device for home video player? and on the PI board itself Emulate USB mass storage device
The problem is that both device are Windows only and neither seem to allow to select a specific folder to share.
Getting back to my goal, does any of you have an idea on how to to connect both on USB ?
Bonus question : is there a way to do this multiple times on the same "server" to connect different folders to differents clients (other frames/radios/...) ?
Thanks for the time spent reading my (long) question !