Random shutdown maybe due to board?

General Discussion
1

Hi , first time poster ,i am a beginner for 3d printing. i suffered a error after building my first printer .
my printer randomly shutdown during print. i have already check the power to pi and board, so i dont think that’s a power problem. i also changed the cables between board and pi but nothing happend , error still .
So could it be a mainboard problem? should i changed a new one? please help me.

mainboard:MKS Genl V2.1
PI : orangepi zero

here is the log , thanks in advance.
klippy (2).log (2.0 MB)
here is the dmesg
image

2

maybe can try a FT232RL uart converter. better than CH341

4

sorry to bother, mks genl v2.1 was use CH340C , but FT232RL was 28 pin , is there any other chips i can use?

5

i solved it problem by using uart to connect mainboard and orangepi.
the error was caused by the inherent defect of mks genl v2.1 , the design of this board do not support high rate communication by usb.

6

Is this your finding or do you have any reference to this?

7

do not have any literally reference, I figure it out with some people, after changing into uart connect ion rather usb , this error never happened again.

8

I have tested two brand new board, sadly they all have the same issue , both works well after using uart

9

I talked to someone else ，if you are going to use genl, make sure adding a heat bed mos unit with 12 voltage

10

after nearly month using，no error since changed into uartconnection.
ps: i have been tested hodbed MOS model to reduce current though borad , but error still.