After last update (30.04.2022) i have problem with connection "error: mcu 'mcu': Serial connection closed"

General Discussion
1

Recently updated my Klipper via Fluidd to the Actual Version v0.10.0-391-g722ad4a1 and after restart i have this error log :frowning:

===========================================================

mcu ‘mcu’: Timeout on connect
mcu ‘mcu’: Wait for identify_response
Traceback (most recent call last):
File “/home/py/klipper/klippy/serialhdl.py”, line 69, in _get_identify_data
params = self.send_with_response(msg, ‘identify_response’)
File “/home/py/klipper/klippy/serialhdl.py”, line 258, in send_with_response
return src.get_response([cmd], self.default_cmd_queue)
File “/home/py/klipper/klippy/serialhdl.py”, line 316, in get_response
cmd_queue)
File “/home/py/klipper/klippy/serialhdl.py”, line 250, in raw_send_wait_ack
self._error(“Serial connection closed”)
File “/home/py/klipper/klippy/serialhdl.py”, line 62, in _error
raise error(self.warn_prefix + (msg % params))
error: mcu ‘mcu’: Serial connection closed

Using:
Debian PC connected to MKS Robin Nano 1.2 via USB (serial: /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0) baud: 250000
Klipper - v0.10.0-391-g722ad4a1
moonraker - v0.7.1-562-gcd520ba

Kiauh is detecting my MCU via USB. (/dev/serial/by-id/usb-1a86_USB_Serial-if00-port0)

Done:
-Rebuild and Reflash MCU with new Klipper firmware. (No effect)
-Reinstall Klipper, Moonraker, Fluid. (No effect)
printer.cfg (15.3 KB)
klippy (24).log (79.3 KB)

2

Please check the instructions at the top of this Robin Nano example config and make sure all options match, and you ran the update_mks_robin.py script before flashing.

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4

OMG U R MY BEST FRIEND NOW! :sweat_smile:
I have waisted 2 days of my life for this problem)
I just forgot to use this script ./scripts/update_mks_robin.py out/klipper.bin out/Robin_nano.bin
Thank you very much! God bless you! :heart:

2 Likes