Hi,
I would like to buy a digital picture frame as a Christmas present, which I could fill with pictures remotely (using owncloud). However, I am not aware of suitable frames which would support webdav, for example. Most cloud-based digital picture frames offer either their own hosting or rely on established services like DropBox.
Do you have any hardware recommendations or workaround ideas?
Nexus 7
cheapest and flexible screen you can get.
Including no-battery-mod also cheap to operate
But then you would have the cable dangling at the side and from an aesthetic viewpoint, tablets are usually not as nice as a dedicated digital picture frame.
Even though one could use a stand with a tablet, which is visually more appealing, I would still prefer having a true frame.
http://www.photovu.com/index.php
seems to work with WebDAV. I guess there are others. Would recommend to check with the vendors or open feature requests there.
This one looks super nice, thanks! Only problems: It’s very expensive and out of stock.
Regarding your second recommendation: I’ve spend quite some time reading user manuals of different digital frames, which is rather frustrating, and at some point decided to ask here, as I imagined that others might have had the same requirements before.
Yes, only one I found 
But: maybe this works: http://airstash.com/wireless-storage.html
If I read it right, you can access any WebDAV Server and it just goes into the USB port of the digital frame you want to have … if it works or not up to you … feedback certainly welcome and thanks for promoting WebDAV as standard!
Wow, that’s really neat! 
I have never heard about airstash, but if it works like it sounds it would, it could turn every digital picture frame into a webdav device. I think I will try it and give some feedback within the next weeks.
I think my enthusiasm was a little premature. Apparently, these sticks always open their own wifi network and also function as a webdav server within this network. So it wouldn’t be able to connect to owncloud ;-(
See: http://www.maxell.com/Airstash/images/A02%20User%20Manual%201v1%20Final.pdf
If its a WebDAV Server you can “mount” it from ownCloud. External Storage Webdav connection might work and then you have it as a folder and can put stuff on it. But would need to be tried out …
This might be an option, as the newer devices are also capable of connecting to an existing wifi network [1]. I will give it a try and see how easy / difficult it is.
[1] http://downloads.sandisk.com/downloads/um/connectv2-um-ios.pdf
I removed tha battery as my wall tablets are mounted flat and so the cable goes out at the back - no USB
And the nice thing with the nexus: no stupid home buttons or so at the front. Completely clean
Take one from ebay with a broken battery (you dont need it; just 5 min of soldering) and you get a perfectly flexible wlan touch display for 30€
I measured mine for aprox 4€ in electricity /year running 24/7
Is there really something cheaper?
That’s a pretty nice idea actually!
In the end I will probably go for a tablet based solution and save myself the trouble of getting the wifi usb-stick to work. Alternatively, if I’ll find the time, I might turn an old screen into a digital frame using a raspberry pi (there are plenty of tutorials online).
If you’re into that kind of thing, this sounds like a fun electronics / raspberry pi zero project.