Klipper randomly disconnects mid-print

General Discussion
1

Basic Information:

Printer Model: ELEGOO Neptune 3 Pro
MCU / Printerboard: ZNP Robin Nano DW V2.2
Host / SBC: Raspberry PI 3B

klippy.log (4.3 MB)

Currently having this issue after fixing my old Neptune 3 Pro, the disconnects are completely random, sometimes while idle, other while in a print. Printer firmware and cfg is from TheFeral Engineer, RPI is running MainsailOS 2.2.2

Already tried 2 usb b cables

RPI Powered by the internal PSU with a buck converter at 5.3V

moonraker (1).log (51.4 KB)

Any help is appreciated

2

Your MCU is quite out of date.

Loaded MCU 'mcu' 105 commands (v0.11.0-53-gb337cc3e / gcc: (15:7-2018-q2-6) 7.3.1 20180622 (release) [ARM/embedded-7-branch revision 261907] binutils: (2.31.1-12+11) 2.31.1)
Git version: 'v0.13.0-454-ge60fe3d99'

Your Pi is current.
First thing I’d do is compile and flash new MCU firmware.

3

seems to be doing it less after updating the firmware on my printer and replacing the usb cable with one that has a ferrite core, any other suggestions?

Also, one thing that happens is that I need to do a firmware reboot twice to get the printer working, 2nd error is “Can not update MCU ‘mcu’ config as it is shutdown”

4

Can you send a new log that includes a disconnect and the “Can not update MCU”?

5

klippy (5).zip (1.7 MB)

last log I got, had to zip it because it was too big