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this post was submitted on 17 Sep 2026
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Prusa printers are totally usable offline. With Prusa Link you can benefit from some simple comfort features while remaining totally inside your local network. You can block Internet access to the printer from your router and Prusa Link will still work totally fine in you local network.
I have to check my pihole logs to confirm for sure there isn't any telemetry by default.
Sovol is another brand to look at if you want opensource.
I have everything turned off, but my Prusa still updates its clock and tells me if it needs a firmware update.
I don't think pihole is going to be able to tell the difference between that or reporting back filenames to Prusa.
I doubt they're doing anything super sketchy, I just don't think there's a great way to verify for sure.
There is though, more than any other 3d printing company, you actually can be absolutely certain of what it's doing
Nice 404 on that link.
I have the very first model they sold, for which they did actively maintain a marlin fork. But that miniRAMBO board was completely offline.
I haven't seen that kind of GitHub activity for recent models.
? I double checked; the link works for me...
Maybe the client you're using doesn't like the parentheses.
https://github.com/prusa3d/Prusa-Firmware
And whether activity is new or not is irrelevant to the concern of not knowing what the device is sound.
I think it's more in your original hyperlink that the last parentheses was included in the hyperlink
Huh, weird
The new firmware availability information comes from the gcode. The notice will pop up even on an offline printer.
That's good to know
You have to manually turn on the prusa cloud features. Also the source for the firmware and the slicer are on github for you to check.
Voron's are cool too if you like tinkering
Prusa Connect (online cloud) is totally optional. You can use Prusa Link locally to send the score to the printer wirelessly from the slicer. Prusa Link is a bit barebone but it does the job.
They are giving out a docker image now so you can host your own prusa cloud on your own network
Oh, that's very cool, I didn't know !
https://www.prusa3d.com/p/prusa-connect-local/early-access/
WAIT, WHAT???
Yeah they came out with a lot in the last month https://www.prusa3d.com/p/prusa-connect-local/early-access/
That's pretty cool. Definitely going to install it once it's out of early access.
I've just been using the Prusa Link via HomeAssistant, which is pretty useful, but the actual Prusa Connect does have more features that'd be fun to play with.
As alternative you can get a pi running octoprint to control the prusa by usb and keep the printer itself completely disconnected.
I have MK3 so PrusaLink is running on a pi already, via the onboard UART. I tried Octoprint with this setup very long ago and I had issues. The pi would be too slow to send the commands to the printer and would end up failing the prints sometimes. I haven't revisited Octoprint since.
Don't most printers work offline? Even Bambi has a lLAN mode.
Thanks the post is updated