Basic Information: Printer Model: Voron 2.4 350 MCU / Printerboard: BTT Octopus Host / SBC: Raspberry Pi 4B klippy.log Hello everyone, I’ve been having issues with my Voron 2.4 for a while now. It keeps losing connection to my toolhead board (EBB36), which runs over CAN bus. Currently, the…

@MarcoCasarin Don’t hijack somebody else’s thread. Please start your own General Discussion query.

Okay, I’ve been printing with PLA and PETG all day. Yesterday I tried printing with ABS, lost connection to can0 again… There are still no LED effects for my nozzle LEDs. For high-temperature materials like ABS, I use four bed fans to heat up the chamber. Maybe the PSU is also a problem? After th…

@Kridi88 [image] koconnor: If someone can reproduce the issue on unmodified code I’ll take a look. [image] Sineos: This would need reproducing the same unwanted behavior without including any unofficial third-party modifications. Since you are quite new here. Do you understand the req…

In the Esoterical’s CANbus guide, he writes in the Getting started section ( https://canbus.esoterical.online/Getting_Started.html There is a known issue with Raspberry Pi operating systems where ‘Bullseye’-based distros (version 6.1.something) and 64-bit systems can cause very strange timing issues…

Well, I lied. Klipper is already dirty because of the cartographer. But that’s something i need… The print wasn’t going to work either: klippy(30).log (2.3 MB) :sob:

When you look at your log: The communication gets unstable around 8 seconds before the crash, with a rising error count and invalid bytes Invalid bytes usually point to serious errors, like hardware issues or being caused by kernel bugs in versions below 6.6

I’m on version 6.12 now. I just had a crash as I logged into the Pi through SSH to send the command “uname -a”. Could my Pi be the problem? klippy(32).log (7.3 MB)

I don’t think it’s an issue with the Pi; I can always access it after the communication error. Yesterday, I found that my Cartographer is not the one I ordered. I ordered the LIS2DW version, which should have a CAN termination built in, but what I got was the ADXL version. With the ADXL version, yo…

[image] Kridi88: I just had a crash as I logged into the Pi through SSH to send the command “uname -a”. The print crashed or the RPi crashed?

Voron 2.4 CanBus: Lost Communication to mcu (EBB36)

General Discussion

Sineos August 4, 2025, 5:21pm 49

See Troubleshooting Spontaneous SBC Reboots and Crashes in Klipper

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Voron 2.4 CanBus: Lost Communication to mcu (EBB36)

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