From The Bench: Episode 2 - Flashing a BTT U2C CAN Adapter with Updated Firmware 

Thanks for the video. I actually really enjoyed that you took the time for explanation which I hadn't seen explained in other videos.

I struggled for days before finding your video mentioning the bad firmware. Took just a minute after. Thank you!

thanks for doing this. really helped doing the walkthrough

Hey man, great content. Thank you for all the work. Much needed to get through this project on the first try. Question for ya…. If I swap ports on the U2C do I have to re flash the board? I’m swapped tool heads and went from SB2240 on stealthburner to EBB36 and the 2240 came with umbilical that won’t work with the 36. Of course I only received 5 pins for the U2C plug. I did have some pins for the white port next to the original black connector. Will the U2C allow me to plug in to ANY can h/can L on the board? Any pin out I can find doesn’t give anything but “can” labels. No numbers. Which should probably tell me that the answer to my question is in fact yes, but I am actually having issues talking to the 36 at this point and trying to find which direction to go to resolve. Thanx again for the invaluable resource that saved me a few weeks ago setting it all up. Worked great until I just couldn’t leave it alone. What’s life without upgrades, right?

USB is both a protocol and a HW / electrical spec. You don't have to use actual USB cable to make use of the USB protocol, though to connect the CAN board to the RPi via USB you would have to make use of the USB connectors on both ends and then transition to a different cable. Some have made use of a CAN bus cable for the USB communication between the two ends. Since this will make use of the USB transceivers, it would be somewhat important that the correct impedance be seen by each end. Also, there is a danger of electrical damage to the USB hardware should the data lines be disconnected without the ground (earth) connection between the two ends still in place. The USB hardware spec for actual USB connectors guarantees this can't happen.

Hello! Help me please, I've been struggling with installing canbus for 2 days now. I have orange pi 5(Distributor ID: Debian Description: Armbian 24.2.1), bought an ebb36 board and a U2C module. At the very beginning, when creating the can0 file, it gave the error /etc/network/interfaces.d/can0 directory does not exist. I manually created the interfaces.d folder and the can0 file. With all further manipulations, I encountered the same problem: I did not see the device via can0. when I scanned the ip addr networks, I discovered that there was no can0 network. Maybe someone has encountered this problem. Thanks in advance!

i used ifconfig command but can't find can0,can only see wlan and lo

Hmm, my output looks slightly different, instead of txqueuelen 1024 it says txqueuelen 10