"No more candidates to test, and no working port/baudrate combination detected" Error message

[cupsen12]

Hey,

I've been trying to setup my ender 3 pro printer with octopi but without luck so far.

What is the problem
The problem is that I can't connect to my printer to octopi, when im trying to connect on octopi.local I will get the following error message "No more candidates to test, and no working port/baudrate combination detected"

What did you already try to solve it?
What I've been trying so far is that I tried multiple cables without luck

Have you tried running in safe mode?

• Yes without luck

Systeminfo Bundle
octoprint-2.log (62.6 KB)

Additional information about your setup

OctoPrint version : 1.8.6
OctoPi version : 0.18.0

I attached additional screenshot of ssh the raspberry - if additional info is needed please ask and I will try to provide as much as possible.

[5ft24]

You are running Klipper firmware on the printer. Octoprint needs Marlin Firmware

[Ewald_Ikemann]

Or if you want to run Klipper, you should go here:

Klipper

[Charlie_Powell]

This is completely false, OctoPrint is compatible with Klipper, as well as RepRapFirmware, Smoothieware and Marlin. Or even anything that talks gcode - even GRBL laser cutters can work.

If the printer is running Klipper, then there are instructions for configuring OctoPrint in the Klipper documentation.

https://www.klipper3d.org/Installation.html#configuring-octoprint-to-use-klipper

If there are issues with that, then please describe them and we can try and help.

[cupsen12]

Thanks for the help! I received the Ender 3 pro from a friend of mine and wasn't told it already had klipper on it.

I tried reinstalling everything and are now stuck with this issue

What's the best way to solve this?

Thanks for help!

[Ewald_Ikemann]

You have to upload Marlin firmware to your Ender 3 printer

[Charlie_Powell]

@Ewald_Ikemann why? I see no reason that the OP must use Marlin. If they would like to use Klipper, then they may do so.

@cupsen12 it looks like you need to build & flash the latest version of Klipper to your printer, as you have a mismatch between the host (Pi) and MCU (printer). The instructions for that are in the same docs that I linked before, here.

[Ewald_Ikemann]

It was not my intention to persuade the user to use Marlin. It was my thought there are difficulties using Klipper.