Ender 3 Communication error in the middle of printing

What is the problem?

Printing stops every time due to communication error

What did you already try to solve it?

Changing USB cables, upload files to SD card

Have you tried running in safe mode?

No, I thought I could not cause of Creality-2x-temperature-reporting-fix plugin

Did running in safe mode solve the problem?

Can't tell

Systeminfo Bundle

You can download this in OctoPrint's System Information dialog ... no bundle, no support!)

connectivity.connection_ok: True
connectivity.enabled: True
connectivity.online: True
connectivity.resolution_check: octoprint.org
connectivity.resolution_ok: True
env.hardware.cores: 4
env.hardware.freq: 1400.0
env.hardware.ram: 914006016
env.os.bits: 32
env.os.id: linux
env.os.platform: linux
env.plugins.pi_support.model: Raspberry Pi 3 Model B Plus Rev 1.3
env.plugins.pi_support.octopi_version: 0.18.0
env.plugins.pi_support.octopiuptodate_build: 0.18.0-1.8.1-20220524101555
env.plugins.pi_support.throttle_state: 0x0
env.python.pip: 20.3.3
env.python.version: 3.7.3
env.python.virtualenv: True
octoprint.last_safe_mode.date: unknown
octoprint.last_safe_mode.reason: unknown
octoprint.safe_mode: False
octoprint.version: 1.8.1
systeminfo.generated: 2022-06-05T13:16:24Z
systeminfo.generator: zipapi

Additional information about your setup

OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible

OctoPrint 1.8.1
Raspberry Pi 3 Model B+
Creality Ender 3

I also had to install Creality-2x-temperature-reporting-fix plugin.
Normal printing without OctoPrint works fine with the same gcode.
My only successfull prints with OctoPrint were simple 15 minute prints.
More complex prints like motherboard fan cover always stop after cca 40 minutes.

last error terminal: Recv: okSend: N8660 G1 X116.805 Y123.894 E638.87753*87Recv: okSend: N8661 - Pastebin.com

Does anyone know how to fix this please? Thanks.

Hello @maroso !

Can you please share the Systeminfo Bundle?

of course
octoprint-systeminfo-20220605214536.zip (227.5 KB)

It seems that there is problem with the connection of the Pi to the printer. Example:

| Send: N7286 G0 F6000 X119.421 Y122.25*75
| Recv: echo:Unknown command: "©ÜÂdΌåÆÀeçÿ"
| Recv: ok

Thanks for help.

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