Basic Information: Printer Model: Ender 3 Pro MCU / Printerboard: SKR mini e3V3 klippy.log Ive been attempting to get Klipper setup on my Ender 3 for a few hours, and for some reason, I cant detect any usb connection even though it worked perfectly fine for Marlin. Im out of ideas as to what t…

Hey @Sineos I saw your announcement on this but I can’t reply to it. First off, I’m NOT having any problems at all. I’m running 64bit OS on a Raspberry Pi 4B that is connected to an Octopus (STMF446) via USB that has CanBoot installed and is communicating with a Mellow FLY SHT42 via CAN. The rPi…

Sorry for all the deleted posts, but i was continuing to correct some self inflicted issues as they arose. It looks like its working now, but i’ll update you if anything happens. Thank you a bunch for your help.

[image] mykepredko: I currently don’t get anything with ls /dev/serial/by-id/* but I believe that’s due to having CanBoot installed and operational - correct? You should get the serial device regardless if you have Canboot or not. I’m using Canboot on my board as well and I get a serial also. …

Hmmm… Just went through the procedure on two printers, no errors but when I run ls /dev/serial/by-id/* after rebooting I get: [image] Ideas what I’m doing wrong?

Is this Debian Bullseye? What board you have connected to the host? What type of connection does the board have? USB, serial? Did you build CanBoot for USB connection?

Here you go. Is this Debian Bullseye? Yes: [image] What board you have connected to the host? Genuine Raspberry Pi 4B connected to an Octopus('F446) What type of connection does the board have? USB, serial? USB Did you build CanBoot for USB connection? Yes Honestly, I thought that you co…

[image] mykepredko: I’m running 64bit OS on a Raspberry Pi 4B that is connected to an Octopus (STMF446) via USB that has CanBoot installed and is communicating with a Mellow FLY SHT42 via CAN. If you are using Klipper in “USB to CAN bridge” mode then the micro-controller is not a “serial devi…

Thanx Kevin for the explanation.

Hey so it looks like i got the bug too. Sineos, im real new to printers and mcus and barely got enough knowledge to flash a pu with mainsail and update an mcu’s firmware. I see youve given step by step instructions on how to fix this debian bug but im still having issues with following your instruct…

I beleive i have the bug too. But when doing the fix i come accross this!! Please help! [16836553484057894237859188362690]

Raspi 4 failing to make usb connection to MCU

General Discussion

Sineos May 22, 2023, 8:59am 38

Known issue and already discussed multiple times. See Debian Bullseye Bug causing Klipper to no longer find the printer board

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Raspi 4 failing to make usb connection to MCU

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