What information do you need to share

Basic Information:

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

Fill out above information and in all cases attach your klippy.log file (use zip to compress it, if too big). Pasting your printer.cfg is not needed
Be sure to check our “Knowledge Base” Category first. Most relevant items, e.g. error messages, are covered there

Describe your issue:

Internal error during connect:

MCU_adc.setup_adc_callback() missing 1

required positional argument:'callback

I upgraded FLYOS Fast v1.3.5 to v1.3.8 and this happened, please help

klippy.log (1).txt (197.3 KB)

Hello @Satpying and welcome to the forum!

Git version: '?'
Branch: ?
Remote: ?
Tracked URL: ?

It is hard to to find a solution when we do not know what we are dealing with.

Please see here: 3D Printers with Preinstalled and Modified Klipper Versions

Unfortunately the only help we can give is to point you to support at MelloFLY.

While your talking to them point out that distributing a modified version of klipper without publishing the source files is a violation of the GPL license.