Read the statement by Michael Teeuw here.
MM as rolling picture frame
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 @ankonaskiff17 I use MMM-ImagesPhotos for this… I added some features for centering and filling … I link to my file server to get the pics 
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 @sdetweil I did a search and drew a blank on module you describe MMM-ImagesPhotos. I’ll poke around with some of the others. Since my knowledge of servers is minimal at best from hardware side required I sort of understand that but I’ve never set about to create a server I’ll have to figure that out. 
 I have several jumbo external hard drives and SSD drives and I was just going to plug one of them into an open USB socket on the Pi.Side subject but maybe good use for the lone Raspberry Pi 1? I tried to use it (Pi 1) for a Pi-Hole I just built but was something that was incompatible so it went back on the shelf 
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 @ankonaskiff17 here is my fork https://github.com/sdetweil/MMM-ImagesPhotos I always search 
 GitHub module-name
 and never have trouble finding thingsit uses a naned folder. uploads, and you can link that anywhere on Linux the link command is ln 
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 @ankonaskiff17 I have an older HP desktop that runs as a server, running Ubuntu Linux 
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 @sdetweil LOOL You’ve got the secret MMM stash. 
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 @sdetweil Also, good point to be aware of is that Github may have modules too. 
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 I use MMM-BackgroundSlideshow for this. I like that it can display picture info. It also has the ability to move forward and back through the pictures, although it seems to have a problem with that in the latest version. I use it to randomly access thousand of images across many folders. 
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 @ankonaskiff17 the module I referenced came from GitHub, I made a fork (linked copy), says so right under mine if you look. I wanted more features. so I added them. 
 the original has not been updated in a long time.I don’t have experience with any others. I was just talking about 1. you are welcome to ignore anything I say. 
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 @sdetweil I take advice anywhere I can find it. I just meant that I don’t need to just search on the MM 3rd Party module page that Github is also fertile ground. 
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 @ankonaskiff17 yes, 3rd party modules are on GitHub… it’s just another list 

