Google doesn't seem to like RSS/Atom much any more (there's still no feeds from G+). But Is there an RSS/Atom feed for Google Photos? And preferably one that's as easy to use and consume as Flickr's that has content that contains the html to show the photo imgs.
And if not, why not?
eg.
https://www.flickr.com/services/feeds/photos_public.gne?id=83642842@N00&lang=en-us&format=atom
https://developers.google.com/picasa-web/docs/2.0/reference?hl=en
eg
http://photos.googleapis.com/data/feed/api/user/[UserID]?access=public&kind=photo&alt=atom
http://photos.googleapis.com/data/feed/api/user/106416716945076707395?access=visible&kind=photo&alt=atom
This gets part of the way there. But I'm not sure it's providing data about photos uploaded into Google Photos or Drive since the ones I dropped into Picasa. It also provides huge amounts of media:rss data but not a simple bit of html <img> in the <description> tag.
Even better is to use the picasaweb versions. eg
https://picasaweb.google.com/data/feed/base/user/106416716945076707395/?alt=rss&kind=photo&hl=en_US
and it's more up to date.
And the support forum seems to have wandered over here.
https://productforums.google.com/forum/#!forum/photos