Is there a way to remotely (wired/wireless) update photos in a digital picture frame that doesn’t have any connectivity capability? All it has is a USB port and sd card port.
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You could use something like the Toshiba flash air?
That probably doesn’t work unless you power-cycle the picture frame after changing the photos.
I had this with some offline Samsung picture frame and a Transcend WiFi SD card. The SD card runs a small Linux and can be unlocked to add own scripts. I had a script that would rsync files from my storage to the SD. However, while the new files were written to the SD just fine, the picture frame never re-read the list of files from the SD. And after power-cycling, my specific model needed to be turned on manually again. So, that wasn’t a satisfactory solution.
A smart powerplug and/or a fingerbot would solve that problem I guess? But at that point it’s probably cheaper to buy a network connected picture frame.
They make wireless SD cards. Pretty sure USB drives too.
Or you could build one yourself with a raspberry pi or something. I’m sure there’s a way to present its storage on USB, then add wifi for you to access that storage.