r/elegoo

A couple months back I posted pycentauri, a local network toolkit for the original Centauri Carbon. I recently got a CC2 with the Canvas, spent a week reverse engineering its protocol, and v0.6.0 now supports both printers from the same package.

UI Screenshot

The CC2 turned out to be a completely different animal: MQTT instead of WebSockets, a different command set, token auth, camera on a different port. pycentauri auto-detects which model you're pointing at, so everything works the same way on either printer.

What you get (both printers):

• Web dashboard: live camera, temps, progress/ETA, pause/resume/stop, speed mode (silent/balanced/sport/ludicrous), fan and heater control, all from any browser on your LAN
• CLI: centauri status, centauri watch, centauri snapshot, full print control
• Python library (async) if you want to build your own stuff
• RTSP bridge: re-streams the webcam as H.264 for Home Assistant, Frigate, VLC, or your NVR
• MCP server: lets AI agents (Claude, Cursor, etc.) monitor your printer and literally see the camera feed
• REST API with OpenAPI docs for anything else

New and CC2 only:

• Canvas multi-filament panel: every tray's filament, color, temp range, loaded status, plus an auto-refill toggle
• Live head speed readout (matches the printer screen)
• Filament runout sensor state
• Canvas support coming for CC1 soon

For the protocol nerds:

Everything learned the hard way is documented in the repo's PROTOCOL.md with dates and firmware versions. Highlights: the CC2 silently expires your MQTT session after about 6 minutes unless you send an app-level ping, its camera is an unauthenticated MJPEG stream on port 8080, both printers only accept exactly four print speed values, and the CC1's status push scheduler can go dormant at idle in a way that survives reboots. If you're building your own integration, this doc may help.

No cloud account, no Elegoo servers, nothing leaves your LAN. Apache 2.0.

Install: pip install "pycentauri[server]" then centauri server --host <printer-ip> (add --access-code <code> for a CC2, it's on the printer screen).

GitHub: https://github.com/bjan/pycentauri PyPI: https://pypi.org/project/pycentauri/

Hi, long time lurker, first time poster. I just received my Canvas this afternoon and got everything connected after a couple hours of tinkering. It looked like I did everything in the video, and the machine loaded up with the first startup. I installed the latest firmware update for the Canvas but now it appears that I'm stuck in a boot loop. The loading screen keeps coming up, it loads for a few seconds before shutting down and starting all over. I saw a couple of suggestions about unplugging the printhead usb cable and that at least starts the machine up before the printhead anomaly error comes up. I'm at a loss for what my next steps could be

The Hare model is straight out the printer, no finishing. Standard sized Benchy for reference.

Printed with a 0.2mm nozzle and a layer height of 0.1mm using Elegoo Cocoa Brown Basic PLA.

So after waiting how many months? for the multi-color system to show up for the original Centauri Carbon, I finally got mine this week and spend the whole day installing it. After dealing with the upgrade issues (HINT: UNPLUG THE CANVAS BEFORE UPGRADING), I have this in and I am very disappointed. Skipping over the fact that IT DOESN'T WORK, I came to realize that I have now lost the ability to heat the chamber. Previously I had a nice little Chitu heater in there that worked just fine. Now of course, open top means no advanced filaments.

Biggest gripe is of course that it is not working. When I initially load the filament it will load just fine and go all the way through out the hotend. But when I then go to print ANYTHING, it starts then errors out with the above message.
I checked the tubing, checked the hotend, checked the new 4 hole filament feed, checked the cabling, all seems to be good. But it will stop with this message every time.

Also, I sliced the model with the latest version of ELEGOO slicer so I don't think it is a GCODE issue.

Gemini suggested tightening the gearbox spring so the filament is better gripped. Keep in mind you replace the gearbox when you upgrade so it is possible that it comes from the factory a little too loose.

All else fails, I will probably take the gearbox itself apart. One of the steps you need to do when installing the CANVAS is clip off little plastic flanges that hold the cables in place. I did that and did not see where they went. Just my luck they fell into the gearbox and that is what is jamming it.

In both cases though I don't think these are the issues because the filament feeds in and out just fine on load. It is only at the start of an actual print that it jams.

If anyone has any suggestions as to what to try next, I welcome them.

Recently switched from using Ender3 and Cura slicer to the Elegoo Centauri Carbon and the Elegoo slicer.

I've been 3D printing for several years now, but my first prints from the CC have had some ugly top layers. So I'm afraid I'm missing some obvious setting that I haven't had to consider before.

This print was using the 0.2mm standard preset in the slicer.

Took about an hour and a half to install. I just threw some colors on the cali cat and printed with the remnants of a couple spools. No issues so far -fingers crossed

I love my CC2~ it's my first printer and it's AMAZING when it works. However I hit various snags about a month ago. The original hotend completed oozed out, the hotend I got with the bundled accessories pack was for the cc1 and didn't realize it wasn't compatible, and now this// filament is not feeding to the toolhead for some reason. By no means an expert and know this is a learning experience... but is this normal? Anyone else had this happen? I'm into month three or so of having it.

Well, I forgot to go downstairs and remove my cover before starting this 50 minute print. Now I have a clogged nozzle again.

Anyone else find it silly to need to remove the top cover when printing pla? Am I the only one that has this issue?

Literally everytime I print pla with the cover on if its more than a 30 minute print I get nozzle clogs from heat creep.

I just don't understand why we can't use the exhaust fan to help exhaust some of this hot air from the chamber.

When printing pla the vents open but you cannot set the exhaust fan to more than 10%. What's the point if the fan barely runs.

Have levelled the bed, cleaned it, and calibration seemed to not work.

Pla did not change.

But it wouldn't stick to the build plate.

Like to receive advice.

Thanks in advance!

Solved I tore it down, and the new square connector on the back PCB had come loose. I unplugged it fully, repeated it, and everything seems to be working now. Thanks for all the advice!

I got my Canvas all set up, and let's say in spools 1-4 I have yellow, black, orange and green. I load each one one by one, and click load in the screen to get the filament up to the 4 in 1 block. However the filament does not come out the nozzle, is that correct behavior? In order to get it to extrude, I have to "load" the filament multiple times.

Then once it extrudes, it works ok if I tell it to extrude from the touchscreen menu. If I tell it to unload, the menu pops up then disappears, but im still able to extrude the filament. For example if I load yellow and get it to extrude, I click unload, and after the screen pops up for unload for like 2 seconds, if i click thr button to extrude again, more yellow will come out, as if it never unloaded anything.

Then if I click to load in a new color, it feeds the color into the 4 in 1, but never actually changes. For example if I have yellow loaded, then click load black, it will whine and click, then when I click to extrude, yellow still comes out. It seems like it can't unload the filament.

If I want to unload the filament, i have to manually push on the cutter lever, and i can feel it slice through the filament. Then u have to retract the filament, and then I can pull it out and load in a new color.

I've used the CC1 for over a year without issues, but I can't for the life of me get this thing to work.

Am I doing something wrong or is there something wrong with my unit?