What's the biggest reason you self-host?
For me it's a combination of cost, education, and cool factor
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Can I run OctoPrint and Plex on the same Pi?
Definitely possible, it’s ideal if you’re not transcoding anything in Plex though. You should also look into klipper with fluidd or mainsail, klipper is (imo) so much better than marlin and fluidd/mainsail are even lighter-weight than octoprint!
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