I'm about to buy a SKR 3, hopefully this will solve the original issue that started this thread. If it still keeps on disconnecting, I'll buy a new cable or replace the original wires that it came with and hopefully that will be the end of it.

I finally installed a esp32 from btt and it works just fine. Too bad I couldn't find an answer for the original question that started this thread. I might revisit this at some point in the future, who knows...

First print with the new board at relatively high speeds (compared to the previous setup) and no CAN disconnects! I guess this means that the cabling is fine.

First time power on with the skr 3 ez and the CAN-FD adapter went fine. I guess that means that something went wrong with the exp ports on the skr 2.

I need to print a new mounting bracket for the new board before doing more in-depth testing. I'll also ubdate everything to 3.5.1 .

I'm about to buy a SKR 3, hopefully this will solve the original issue that started this thread. If it still keeps on disconnecting, I'll buy a new cable or replace the original wires that it came with and hopefully that will be the end of it.

@gloomyandy I honestly can't observe any damage on the CAN-FD board. Is there a posibility that something might have happened to the exp ports on the skr?

If you unplug everything else from the board and just have the CAN-FD connected do you seem the same issue?

Yes, I still have the same issue.

When you are running these tests how are you powering the board?

The board is connected to a 24v psu. I have tried powering the board over usb as well (yes, I did move the vdd-usb jumper for this), but to no avail.

@gloomyandy no, it does not.

@gloomyandy do you mean the white and yellow wires?
Also, the board refuses to boot up if i have the can adapter connected but not the toolboard.

@gloomyandy

I feel like I should mention that this system worked for the last month, and only just now that I started to print faster it began showing the initial behavior.

@gloomyandy No, if I power on the board without the CAN-FD interface, the board boots up just fine.

@gloomyandy isn't that what the can adapter from mellow is called? The one connected to the exp ports

@gloomyandy Everything works fine untill I connect the efd to the board. After that, it's the same story again...

Closer inspection of the efd doesn't reveal any burns. It also passes the smell test (no burnt electronics smell)