'EBBCan': Unable to connect - After FW updates

dJOS_500 · February 15, 2024, 10:01pm

And solved!!!

The issue was CanBoot - I got rid of it:

rm -rf CanBoot

and install Katapult as per the Voron Tools Guide:

github.com

EricZimmerman/VoronTools/blob/main/EBB_CAN.md

This is a quick write up on how do deal with BTT parts as it relates to CAN. This in no way is meant to take away from the awesome work that Maz0r did, which is [here](https://github.com/maz0r/klipper_canbus/). This site is mostly legacy now.

For additional hardware, check out [Esoterical's](https://github.com/Esoterical/voron_canbus) site

Rather, this document covers using the U2C 2.1 and EBB36 to get CAN going for a typical setup.

Why write this? its a pretty common setup and it can be confusing/easy to miss some of the steps, so here we go.

# Parts overview

1. Raspbery Pi (CB1 or other hardware may change some of the steps, like the network setup)
2. BTT U2C (I have a 2.1)
3. BTT EBB36 (I have a 1.2)
4. Some wire in the 22awg range
5. USB cables
6. A Voron

It is recommended you do as much of this work OUTSIDE your printer. In other words, do not rip out everything from your working printer to see if you can get CAN working. Rather, set all this up next to the printer. Yes this may involve making some short wire runs to connect things, but its worth it, especially if you ned to print things for mounting and so on.

If you do not have a bench power supply, consider getting one as this can make your life a lot easier. Otherwise just wire up power off your printer's PSU. I personally have a USB keystone jack coming off the back of my printer that goes to my Pi, but if not, just run a temporary connection from under the deck to your Pi for the boards.

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I do appreciate the help folks and here are my key learnings:

dont update the U2C firmware (it doesnt run a Klipper MCU anyway)
get rid of CanBoot and replace it with Katapult

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'EBBCan': Unable to connect - After FW updates

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