I set up a #writefreely instance yesterday to play around with. It's a single go executable, and wasn't too hard to set up. I'm running it behind Apache, but you can run it standalone as well, either with SQLite or Mariadb. It would probably run fine on a Raspberry Pi or similar.
The blogging experience is pretty minimal, and it's not as complete as say Wordpress. For example, embedding an image requires an image host, as opposed to uploading a file through the web interface. Formatting is mostly through markdown. That said, that could be a feature depending on how you look at it.
It does seem like an easy way to get on the fediverse with something self-hosted, though. I don't know how long I'm going to keep this up, but if you want to follow it my blog is @email@example.com.
A bunch of technomancers in the fediverse. This arcology is for all who wash up upon it's digital shore.