What speed is minumum for can bus setup

[mykepredko]

Nope.

https://www.klipper3d.org/CANBUS.html#usb-to-can-bus-bridge-mode

As I said above, work at getting CAN working reliably first with more appropriate wiring your CanHat and then move onto the Octopus.

We had something of a spirited conversation on the topic that you can read through here:

Setup EBB36 v1.2 connected to Octopus pro

Basic Information: Printer Model: V Core 3.1 500 MCU / Printerboard: btt Octopus Pro Lets continue the klipper noob adventures. For those already involved, thank you. The printer works and has printed a couple of calibration prints. Has anyone any experience of setting you the ebb36 v1.2 with an octopus pro (and not use a can hat) The GitHub - bigtreetech/EBB makes no sense to me. It appears to suggest install firmware_USB.bin onto ebb board and add the code from sample-bigtreetech-ebb…

You can setup Klipper on the Octopus to act as a CAN Bridge using a Klipper build like:

CanBoot is installed before it and acts as a CAN bus bootloader with the purpose of providing a way of updating the firmware from the comfort of an SSH terminal but it isn’t necessary to run the CAN interface from the Octopus.

However, I again highly recommend getting the wiring and a CanHat or U2C board interface working first.