CAN Bus Upgrade Information and Sources

[NoGuru]

Sorry if I am missing it but do you have a link to the other guide you referred to? I have been following maz0rs but can't get the UUID. Maybe a different one will help.

Yeah sorry I forgot to link it before https://github.com/cruiten/Voron-Related/blob/main/CANbus/Documentation/README.md

 

[Kbreezy - KB3D]

We recently published a wiki for EBB36 and our coming CAN Bus kits for V2.4 & Trident.

BTT EBB36 CAN Toolhead Board

BTT EBB36 CAN Toolhead Board Install Guide

wiki.kb-3d.com

We'll follow shortly with one for Mellow's SB2040, too!

 

[pws]

I didn't see if you got this reference, but another really good and easy guide is https://github.com/Esoterical/voron_canbus

Took me less than 15 minutes to get my Fysetc Spider up and running CanBoot and re-flash klipper as a USB-to-Can bridge onto it.

 

[CrazyPrint]

Everyone please see issue 44 on the canboot github for a fix for the u2c not allowing CAN flashing to the EBB. BTT has an updated firmware that I tested and verified working. https://github.com/Arksine/CanBoot/issues/44

For anyone who wants to reproduce this.

1. Download the file from bigtreetech comment

   wget https://github.com/Arksine/CanBoot/files/10410265/G0B1_U2C_V2.zip

2. Stop klipper

   sudo systemctl stop klipper

3. Bring down the can interface

   sudo ifdown can0

4. Unzip the firmware file from bigtreetech

   unzip G0B1_U2C_V2.zip

5. Unplug the u2c controller from usb
6. Press and hold the boot button on the u2c and plug the usb cable back in, then release the boot button.
7. Verify that the u2c is in dfu mode

   dfu-util -l

   You should see lines that contain

   Found DFU: [0483:df11]

8. Flash the new firmware to the u2c

   dfu-util -D G0B1_U2C_V2.bin -d 0483:df11 -a 0 -s 0x08000000:leave

9. Unplug and replug in the usb cable for the u2c to reset it
10. The CAN interface should now be back up, if not

    sudo ifup can0

11. Follow the steps to compile and flash canboot to the EBB
12. Follow the steps to compile and flash klipper over CAN
13. Start klipper

    sudo systemctl start klipper

* Edited to format the commands

Ok, what bitrate do i set can to with this firmware? Is CAN bitrate relevant to this device and firmware, or only based on EBB36 setting?

 

[voodoobrew]

My advice. Order duplicates or magic blue smoke refill kits. Super easy to smoke the ebb36 and 42 by skipping one step. I can't remember which step unfortunately, probably forgetting to remove the usb power jumper when switching to canbus power. Usb is 5v and canbus is 12-24v.

Maybe order 3...I think have bought 8 installed 3 an smoked 3 others. Just the head though. Never had an issue with the can hat.

Some of my problem was that I was coming from the btt can crab thing that uses a usb-c cord. Didn't realize it was canbus and not usb-c.
Pretty easy to cross the wires in the 4pin plugs too. Some times only double checking them isn't enough.
I usualy plugged them in then used an ohm meter from board to board instead of just looking at the plugs.

 

[NoGuru]

My advice. Order duplicates or magic blue smoke refill kits. Super easy to smoke the ebb36 and 42 by skipping one step. I can't remember which step unfortunately, probably forgetting to remove the usb power jumper when switching to canbus power. Usb is 5v and canbus is 12-24v.

Maybe order 3...I think have bought 8 installed 3 an smoked 3 others. Just the head though. Never had an issue with the can hat.

Some of my problem was that I was coming from the btt can crab thing that uses a usb-c cord. Didn't realize it was canbus and not usb-c.
Pretty easy to cross the wires in the 4pin plugs too. Some times only double checking them isn't enough.
I usualy plugged them in then used an ohm meter from board to board instead of just looking at the plugs.

I have to agree with this. I also buy them in sets and have magic smoked 1 or two of them just in testing.