Can not update mcu 'mcu' config as it is shutdown (flsun sr)

[IsacityXD]

Basic Information:

Printer Model: Flsun Super racer
MCU / Printerboard: MKS Robin Nano V3
klippy (1).log (434.0 KB)

I have had this issue for a while, sometimes it happens after 5minutes, sometimes after 1.5hour, but it always happens,

I followed the step by step guide to install and flash the pi/printer to make sure I did not make any mistakes
printer.cfg (2.4 KB)

[EddyMI3D]

Hello @IsacityXD !

Some BG info:

Can not update MCU '<name>' config as it is shutdown

Can not update MCU '<name>' config as it is shutdown Background The Klipper host process on the SBC is starting or restarting, but cannot properly connect to the respective MCU because it is in a shutdown / error state. The is not really an error message by itself, but an indication that MCU needs to clear its error state beforehand. Reasons The MCU is in a shutdown / error state and Klipper Host process was (re-)started without clearing this The reason why the MCU is in this state is not con…

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Sounds like EMI issues:

• Are there high power devices near by: washing machines, ACs, fridges …
• Do you have a short and high quality USB cable between Klipper host and printer?
• Are Klipper host and printer on different outlets or, what is way better, on the same one?

[IsacityXD]

Are there high power devices near by: washing machines, ACs, fridges …
No
Do you have a short and high quality USB cable between Klipper host and printer?
It is a high quality cable, but it is very long, it came with the printer so I guessed it was good
Are Klipper host and printer on different outlets or, what is way better, on the same one?
On the same

[IsacityXD]

today I got a 30cm usb A to usb B, it solved the problem, 6hours without stop allready

[EddyMI3D]

Great!

Happy printing!