Klipper Crashing on Tronxy X5SA 400 Pro with CXY-V6-191121 Board

Basic Information:

Printer Model: Tronxy X5SA400-PRO
MCU / Printerboard: CXY-V6-191121

Fill out above information and in all cases attach your klippy.log file. Pasting your printer.cfg is not needed

Describe your issue:

Hi All,

I’m new here. I hope I’ve found the right place. I’ve managed to get Klipper running on the CXY-V6-191121 Board which is the latest revision from Tronxy. When it works, it works great. But it crashes a lot.
The Klippy log was too big to attach, but the moonraker log seems to be the one reporting the problem. It looks like a thermal shutdown, so overheating? But my knowledge is pretty limited, so I apologise in advance. I don’t know what’s overheating, so if anyone with more experience could advise then I will upgrade the needed part.

I really want to put an Octopus Pro board on this machine, but because of the breakout board to 30 pin serial connection on the Tronxy boards breaking the connections up might well be beyond my current ability.

Any help / advice / troubleshooting would be massively appreciated. I just had a print stop with the firmware shutting down about 10 mins before the end of the print. So it’s ruined…not the end of the world, but would love to find out why and fix it.



moonraker.log (202.9 KB)

Hello @shadyshaun !

Can you also share the klippy.log in your next post?

Hi Eddy,

Thanks for the reply. The klippy.log is too large to post. I did try and attach it. I’ve zipped it and tried again. Any help would be much appreciated!
Klipper Log.zip (1.2 MB)

It seems Klipper on the Pi loses connection to the MCU on the printer board.

You may check the USB cable for proper connection.
Also check if there are maybe some cold solder joints with the USB connector on the printer board (one never knows). When the board warms up, those bad joints can lose contact. Also the connector may has to bear some mechanical stress.

I’ve changed the printer cable out, so I don’t think it’s that.

CPU Temperature: 43.816
2022-09-30 19:23:24,373 [proc_stats.py:_handle_shutdown()] - Throttled Flags:
2022-09-30 19:24:02,926 [klippy_connection.py:_on_connection_closed()] - Klippy Connection Removed

This is what makes me think overheat? A temperature reading, then a throttle flag with a shutdown?
This causes the MCU to disconnect from the Pi it looks like?

Op, how did you even manage to get klipper on a v6 191121 anyway?