Problems with UUID canbus

General Discussion
1

hi,

I know this is a question that may not correspond to this forum, but I don’t know where to ask it.
I am trying to configure a canbus, mellow sht42. And after modifying the configuration, it gives me this error at the beginning.
to Rpi, I have connected the Octopus board and in Mellow sht42 by USB

“‘SHT42’: Invalid CAN uuid”

I have connected by Shh and I have sent the command

“ls -l /dev/disk/by-uuid”

Getting this response…

"
total 0
lrwxrwxrwx 1 root root 15 May 25 04:31 0213-DFD6 → …/…/mmcblk0p1
lrwxrwxrwx 1 root root 15 May 25 04:31 ccbe1f98-54b5-495f-affb-a570a10d0921 → …/…/mmcblk0p2
"

But the result is not clear to me… if the UUID is:

"“0213-DFD6”

or as it says total: 0 has not found any usb…

however if I send a

“lsusb”, it seems that if it finds it, the response is:

"
Bus 001 Device 005: ID 0aaa:0bbb Japan CBM Corp.
Bus 001 Device 006: ID 1d50:614e OpenMoko, Inc.
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
"

Some ideas?

2

a fact that I do not know if it is relevant.

I have the toolboard, Mellow Sht42, connected ONLY with the usb cable, I have not supplied the 24v of the PSU…

Does it need to be connected to the PSU? for the initial configuration

3

You need to follow the Klipper canbus document and use the built in script to find the uuid. The huvud must be flashed and have 12/24v provided to function. I assume the sht42 is the same.

https://www.klipper3d.org/CANBUS.html

4

seems the script in the link for find UUID, is if I have it connected by CANBUS, but I have it connected by USB.

How would it be?

maybe something like this:

~/klippy-env/bin/python ~/klipper/scripts/canbus_query.py usb0