Mcu 'mcu': Unable to connect Once the underlying issue is corrected,

General Discussion
1

Basic Information:

Printer Model:
MCU / Printerboard:
Host / SBC
klippy.log

model print: Flsun1tpro

log klipper

[WARNING]:mcu ‘mcu’: Unable to open serial port: [Errno 2] could not open port /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0: [Errno 2] No such file or directory: ‘/dev/serial/by-id/usb-1a86_USB_Serial-if00-port0’

________________________________

comand
ls /dev/serial/by-id/*
_______________________________
When I request the serial number of the  MСU 192.168.0.24, it asks for a password. What could that password be?

Example: 192.168.0.24 password

Describe your issue:

…

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2

Hi @ole2 ,

We’ll need some more information to help you:

  • Which printer is this?
  • What SBC are you using (e.g. Raspberry Pi)?
  • What mainboard is the printer using?

Also, your SSH syntax should be ssh USERNAME@192.168.0.24. Once you provide the printer and SBC info, we can try to figure out the default credentials.

3

Also if you can connect with Fluid or Mainsail you can find the serial address without knowing the username and password needed for SSH login.

Put 192.168.0.24 in the address bar of your browser.

4

FLSUN T 1 PRO

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YES, I PUT THE ADDRESS AND THE CLIPPER AND THE BROWSER SEES THE ADDRESS

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[Errno 2] No such file or directory: '/dev/serial/by-id/usb-1a86_USB_Serial-if00-port0

ole2 6

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7

FLSUN T 1 PRO

8

Thank you. According to this site:

This command should work:

ssh pi@192.168.0.24

with password 1. If that doesn’t work, try password flsun

9

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output terminal file

MobaXterm_192.168.0.24pi_20260503_083150.pdf (300.8 KB)

10

try lsusb

you should see something like this:

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devices 15 and 16 are my controlboard and my PI