Voron can't connect to OctoPrint

Why did you install the GPX plugin?? It has absolutely no relevance to the Voron printers, and will break communication with anything that doesn't need it.

Because without the GPX Plug-in terminal displays a mess. Take a look at what happens without GPX.

Changing monitoring state from "Offline" to "Detecting serial connection"
Performing autodetection with 7 port/baudrate candidates: /dev/ttyACM1@115200, /dev/ttyACM1@250000, /dev/ttyACM1@230400, /dev/ttyACM1@57600, /dev/ttyACM1@38400, /dev/ttyACM1@19200, /dev/ttyACM1@9600
Trying port /dev/ttyACM1, baudrate 115200
Connecting to port /dev/ttyACM1, baudrate 115200
Handshake attempt #1 with timeout 4.0s
Connected to: Serial<id=0xaed5c7d8, open=True>(port='/dev/ttyACM1', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=4.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Send: N0 M110 N0*125
Handshake attempt #2 with timeout 4.0s
Send: N0 M110 N0*125
Handshake attempt #3 with timeout 4.0s
Send: N0 M110 N0*125
Trying port /dev/ttyACM1, baudrate 250000
Handshake attempt #1 with timeout 4.0s
Send: N0 M110 N0*125
Handshake attempt #2 with timeout 4.0s
Send: N0 M110 N0*125
Handshake attempt #3 with timeout 4.0s
Send: N0 M110 N0*125
Trying port /dev/ttyACM1, baudrate 230400
Handshake attempt #1 with timeout 4.0s
Send: N0 M110 N0*125
Recv: \x0e\x13e\x16ò§Æ\x00\x81öL\x80Ð~\x0e\x13e!ûà\x85@\x81öLd6~\x0e\x13e\x16\x8c\x87¹\x00\x81öK\x99m~\x0e\x13e!\x95¿ø@\x81öLRý~\x0e\x13e\x16¥ç¬\x00\x81öP\x00 ~\x0e\x13e!¯\x9fë@\x81öLA\x0c~\x0e\x13e\x16¿Ç\x9f\x00\x81öK¾\x91~\x0e\x13e!È\xffÞ@\x81öOe>~\x0e\x13\\x80u\x85\x91.\x93½Cõé~\x0e\x13e\x16Ù§\x92\x00\x81öI\x9a\x0e~\x0f\x13e!\x80âßÑ@\x81öMàT~\x0f\x13e\x16\x80ó\x87\x85\x00\x81öM\x04û~\x0f\x13e!\x80ü¿Ä@\x81öP
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WARNThe received line contains at least one null byte character at position 7, this hints at some data corruption going on
Handshake attempt #2 with timeout 4.0s
Send: N0 M110 N0*125
Handshake attempt #3 with timeout 4.0s
Send: N0 M110 N0*125
Trying port /dev/ttyACM1, baudrate 57600
Handshake attempt #1 with timeout 4.0s
Send: N0 M110 N0*125
Handshake attempt #2 with timeout 4.0s
Send: N0 M110 N0*125
Handshake attempt #3 with timeout 4.0s
Send: N0 M110 N0*125
Trying port /dev/ttyACM1, baudrate 38400
Handshake attempt #1 with timeout 4.0s
Send: N0 M110 N0*125
Handshake attempt #2 with timeout 4.0s
Send: N0 M110 N0*125
Recv: 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WARNThe received line contains at least one null byte character at position 23, this hints at some data corruption going on
Handshake attempt #3 with timeout 4.0s
Send: N0 M110 N0*125
Trying port /dev/ttyACM1, baudrate 19200
Handshake attempt #1 with timeout 4.0s
Send: N0 M110 N0*125
Handshake attempt #2 with timeout 4.0s
Send: N0 M110 N0*125
Handshake attempt #3 with timeout 4.0s
Send: N0 M110 N0*125
Trying port /dev/ttyACM1, baudrate 9600
Handshake attempt #1 with timeout 4.0s
Send: N0 M110 N0*125
Handshake attempt #2 with timeout 4.0s
Send: N0 M110 N0*125
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WARNThe received line contains at least one null byte character at position 9, this hints at some data corruption going on
Recv: ¡~\x0f\x13e\x16\x86çëé\x00\x81öT.s~\x0f\x13e!\x86ñ¤¨@\x81öN~j~\x0f\x13e\x16\x87\x81ËÜ\x00\x81öKÌ\x17~\x0f\x13e!\x87\x8b\x84\x9b@\x81öMy(~\x0f\x13e\x16\x87\x9b«Ï\x00\x81öNé\x19~\x0f\x13e!\x87¤ä\x8e@\x81öPÝ\x9e~\x0f\x13e\x16\x87µ\x8bÂ\x00\x81öLÖ½~\x0f\x13e!\x87¾Ä\x81@\x81öO\x86ê~\x0f\x13e\x16\x87Îëµ\x00\x81öQØ\x89~\x0f\x13e!\x87Ø£ô@\x81öP:\x13~\x0f\x13e\x16\x87è˨\x00\x81öOWl~\x0f\x13e!\x87ò\x83ç@\x81öLFÆ~\x0f\x13e\x16\x88\x82«\x9b\x00\x81öL×;~\x0f\x13e!\x88\x8bãÚ@\x81öM\x99\x9c~\x0f\x13e\x16\x88\x9c\x8b\x8e\x00\x81öU~ç~\x0f\x13e!\x88¥ÃÍ@\x81öM}Â~\x0f\x13e\x16\x88µë\x81\x00\x81öM-Ù~\x0f\x13e!\x88¿£À@\x81öNè\x02~\x0f\x13e\x16\x88ÏÊô\x00\x81öOD<~\x0f\x13e!\x88Ù\x83³@\x81öQqc~\x0f\x13e\x16\x88éªç\x00\x81öVÜ\x0f~\x0f\x13e!\x88òã¦@\x81öN\x99±~\x0f\x13e\x16\x89\x83\x8aÚ\x00\x81öSj
WARNThe received line contains at least one null byte character at position 10, this hints at some data corruption going on
Handshake attempt #3 with timeout 4.0s
Send: N0 M110 N0*125
Recv: ~\x0f\x13e!\x89\x8cÃ\x99@\x81öL\x97<~\x0f\x13e\x16\x89\x9cêÍ\x00\x81öKYÓ~\x0f\x13e!\x89¦£\x8c@\x81öM\x19Ä~\x0f\x13e\x16\x89¶ÊÀ\x00\x81öP\x84A~\x0f\x13e!\x89À\x82\xff@\x81öN^c~\x0f\x13e\x16\x89Ъ³\x00\x81öN\x0ex~\x0f\x13e!\x89Ùâò@\x81öLrD~\x0f\x13e\x16\x89ê\x8a¦\x00\x81öJ`5~\x0f\x13e!\x89óÂå@\x81öMèå~\x0e\x13\\x80{\x85üo\x9eÒ\x14\x9bÛ~\x0f\x13e\x16\x8a\x83ê\x99\x00\x81öS»\x85~\x0f\x13e!\x8a\x8d¢Ø@\x81öNè×~\x0f\x13e\x16\x8a\x9dÊ\x8c\x00\x81öP­\x82~\x0f\x13e!\x8a§\x82Ë@\x81öI:P~\x0f\x13e\x16\x8a·©\xff\x00\x81öK
WARNThe received line contains at least one null byte character at position 24, this hints at some data corruption going on
Changing monitoring state from "Detecting serial connection" to "Error"
Changing monitoring state from "Error" to "Offline after error"
Connection closed, closing down monitor``` 
No more candidates to test, and no working port/baudrate combination detected.

Sure that Voron has Marlin on it?
Afaik, Vorons run on Klipper.

grafik

If you are aware of this, you have to connect OctoPrint to /tmp/printer

voron could be reprap firmware too, seen videos of that for duet boards, but still wouldn't require GPX plugin. definitely should be connecting to /tmp/printer instead of /dev/ttyACM1 for klipper.

GPX is now uninstalled
" /tmp/printer" Is not something that I can select from the options.
OctoPrint Settings 2

Are you sure Klipper is correctly installed for use with OctoPrint?

I recommend the Klipper forum:

I don't know how to update or check for updates for Octorpint via SSH.
Ocotprint is installed on the Voron, as well as the following:


As I said: At the Klipper forum are the guys that know more about KIAUH

It depends on how modified the OctoPrint installation is... A "normal" installation of OctoPrint has a web interface on port 5000. Connect to that with a browser and go to Settings, Software Update.

sudo netstat -auntp might help find the right port.

You could also try https://community.octoprint.org/t/octoprint-wont-update/33409/7 from SSH.

You don't need GPX, you need to completelly remove it and install OctoKlipper (also you need klipper properly installed and configured on your pi - this is in the voron docs)

As to OP updates - it handles updates by itself (you don't need kiauh to update OP)

Things needed in kiauh for proper OP-Klipper operation:
image

(there are 2 klippers etc because I manage 2 printers from this pc)
(crowsnest is only needed if you're using cameras)

1 Like

I have reached out to the Voron/Klipper community for additional support, please review the thread:

OctoPrint via web browser is up to date and GPX has been fully uninstalled.

First you have to configure klipper to work correctly with your hardware (from what I see on the thread you linked you don't have that - to achieve this follow the voron setup guide from the official voron site - everything is there).

After you have a working klipper config for your hardware install OctoKlipper plugin.

I went to Installing Octoprint | Voron Documentation
Followed the Klipper installation instructions and then Klipper Octoprint Configuration.
Step 3 of Klipper Octoprint Configuration is where I have an issue. Instead of /tmp/printer I have /dev/ttyACM0

I have installed

  • OctoKlipper
  • Themeify
  • TerminalCommands
  • Bed Level Visualizer
  • Print Time Genius

OctoKlipper is telling me: Klipper: Standby
Serial Port is still:/dev/ttyACM0

How do you know that Klipper is not configured properly? Where are you looking?

Then something went probably wrong during the installation (of the script)

Maybe it's best to start over and to try it again with a fresh image.

I think @PrintedWeezl is right. Start from a clean OS image on the Pi and reinstall everything. You need to have the correct klipper pseudo-port (in my case one of the printers named Mikrus had it configured by kiauh as /home/szafran/Mikrus_data/comms/klippy.serial) after proper installation.
Check my previous screenshot of kiauh - you only need to install klipper and OP (with OctoKlipper plugin) for everything to work correctly.

I would recommend the OctoPi image with Klipper included. So no need for Kiauh .
OctoKlipper is included as well

I would recommend clean OS image and install everything via kiauh - you will have less problems after that with updates, or if you'll want to change from OP to other UI app.

I never had issues with updates. Neither OctoPrint nor Klipper.

With your help and the help of a community member over at a klipper forum, I got everything working.

Based on the klippy log the printer.cfg is expected to be in /home/Yuriy/printer_data/config/printer.cfg
I had it in 2 locations, /home/Yuriy and /home/Yuriy/printer_data/config/printer.cfg
I deleted everything from /home/Yuriy

I got Fluidd and Mainsail to connect. Installed Orca Slicer and that also connected.
Edited the printer.cfg to include [include mainsail.cfg]; [virtual_sdcard]; [display_status]; [pause_resume]
All seem to work.

In Octoprint I edited the Klipper Config Directory; Klipper Log File (directory).
Now all of the files load correctly when clicking on “Open Editor” and “Analyze Klipper Log”.
State remains Offline and Klipper is in Standby. When trying to connect in OctoPrint, nothing happens.

Klippy.log still shows:
mcu 'mcu': Unable to open serial port: [Errno 2] could not open port /dev/serial/by-id/usb-Klipper_stm32f446xx_070020001650335331383520-if00: [Errno 2] No such file or directory: '/dev/serial/by-id/usb-Klipper_stm32f446xx_070020001650335331383520-if00

After editing the path in Octoprint to /home/Yuriy/printer_data/comms/klippy.serial and setting the Baudrate to 115200 everything started to work.

Thank you for all of the suggestions.

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