Spontaneus stop during the print

General Discussion
1

Basic Information:

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

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Describe your issue:

I have conected a Raspberry pi zero 2w to ender 3 v3 se and I have constantly stops during th print. I only detected that the cpu reach the 75% just during the stop . I attache my Klippy.log beacuse I have this problem since a week

klippy (1).log (1.4 MB)

2

Welcome.

Does this mean your machine worked well for a long time and a week ago started acting up?

Your log has many dropped serial connection errors Timeout with MCU / Lost communication with MCU

And1 instance of “timer too close” Timer too close

Check those 2 links and let us know if you need more help.

3 
Stats 7371.6: gcodein=0 mcu: mcu_awake=0.008 mcu_task_avg=0.000022 mcu_task_stddev=0.000020 bytes_write=2816762 bytes_read=2097083 bytes_retransmit=9 bytes_invalid=0 send_seq=80206 receive_seq=80206 retransmit_seq=2 srtt=0.002 rttvar=0.000 rto=0.025 ready_bytes=53 upcoming_bytes=0 freq=71999878 sd_pos=663203 mcu_temp: temp=31.7 raspberry_pi: temp=42.9 heater_bed: target=55 temp=55.0 pwm=0.228 print_time=6845.532 buffer_time=1.041 print_stall=0 extruder: target=190 temp=190.1 pwm=0.680 sysload=0.55 cputime=233.052 memavail=196784
Stats 7375.4: gcodein=0 mcu: mcu_awake=0.004 mcu_task_avg=0.000020 mcu_task_stddev=0.000016 bytes_write=2817498 bytes_read=2097875 bytes_retransmit=9 bytes_invalid=0 send_seq=80229 receive_seq=80226 retransmit_seq=2 srtt=0.002 rttvar=0.000 rto=0.025 ready_bytes=0 upcoming_bytes=0 freq=71999876 sd_pos=663548 mcu_temp: temp=31.8 raspberry_pi: temp=41.9 heater_bed: target=55 temp=55.0 pwm=0.277 print_time=6846.476 buffer_time=0.000 print_stall=0 extruder: target=190 temp=190.1 pwm=0.737 sysload=0.55 cputime=233.100 memavail=200784

Something, blocked Klippy for almost 4 seconds.

If you can reproduce it reliably, I can suggest testing this: PoC reactor: timers tracker by nefelim4ag · Pull Request #7170 · Klipper3d/klipper · GitHub

cd ~/klipper
git fetch origin pull/7170/head
git checkout FETCH_HEAD
sudo systemctl restart klipper

This can shine light on what is going on.

Thanks,
-Timofey

4

It’s a random error that appeared a week ago. I haven’t done many print jobs before, but the ones I tested previously worked fine.

5

I used gemini ai to identify the problem and changed de USB from the print to raspberry pi zero 2w. But the problem continues.