Too many consecutive timeouts, printer still connected and alive? with ender 3 V2 neo

What is the problem?

When I print something, the printer randomly stops after a few Hours. (Sometimes earlier, sometimes later) The Error I see on the Web GUI is: Too many consecutive timeouts, printer still connected and alive?

What did you already try to solve it?

I changed the USB-Cable (I had a 90Β° bent cable before, I changed that to a cable I used for different stuff (mostly to upload stuff to ESP32s), it always worked), I unplugged my camera and the LEDs I had connected, I ran OctoPrint in safe Mode, I lifted the USB-Cable away from the metal shelf with an empty filament Spool. I plugged my Printer directly into Power (normally I have it connected to a Shelly, so I can turn it off automatically, when the Print finishes), I uninstalled some plugins and ran in safe mode.

Have you tried running in safe mode?

Yes, I tried running in safe mode.

Did running in safe mode solve the problem?

No, I tested again, and the Print was cancelled after a few hours.

Systeminfo Bundle

You can download this in OctoPrint's System Information dialog ... no bundle, no support!) (1.3 MB)

Additional information about your setup

OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible

I updated Octoprint to the newest Version (before running in safe mode), Octopi Version 1.0.0, running on Raspberry Pi 4 Model B Rev 1.5, Ender 3 V2 Neo (stock firmware), I use mostly Safari as a Browser, but I use the Cura Plugin to print with Octoprint, My Operating Systems are: macOS, iPadOS and Windows (I use Octoprint everywhere, but i usually print from my Mac), I used a Raspberry Pi camera, I had a WS2812B light-Strip connected (I will not connect this in the future anymore, because I want to control the LED-Strip through Home assistant), I had the display of the Printer disconnected, but I read, that the Display-Cable could cause Problems, so I plugged it back in to the Display of the Printer, The Raspberry Pi is connected via a 5-meter long Ethernet-Cable to a Wi-Fi Repeater, which connects to my Wi-Fi (my Wi-Fi is too weak in my basement, where my Printer is) I use an S/FTP-Cable at the moment, but I will change that to a U/UTP-Cable when I test the next time, hopefully with some recommendations from you, what I should try else to fix this issue.

serial.log: Microsoft OneDrive (too big for this Forum)

Thanks in advance

You could try isolating the 5v positive side of the USB connection. There are many methods for this. Some newer control boards have is built in and can be disconnected with a jumper.

Do a search on "Block 5v". Should get you a lot of threads to review.

I'll be interested in any replies you get as I'm in almost the exact same boat except with an Ender 5 Pro. Worked for 18months+ now won't stay connected for more than a few minutes

Creality printers are very susceptible to EMI. In addition, they are also EMI generators. Printers that work for months or years and then suddenly start with communication errors are probably suffering from EMI.

A high quality, shielded USB with ferite beads is usually the first line of defense. An AC line filter can sometimes help.

A recent change in orientation of the printer and the computer it is connected to or recent additions of other electrical devices nearby or even on the same circuit(s) up to the whole house can have an effect.

Sometimes you can reduce the effects by re-routing the USB cable or the power cables including changing the orientation of the two devices at the ends of the USB cable.

1 Like

Thankyou for your reply. It seems you've solved my issue. I moved the RasPi out of the enclosure and it has been connected for more than two hours. I'm going to look into a better quality USB cable so I can try to move it back in.

Thanks a lot for your reply. Where would you place the AC line filter? Before the printer or before the Raspberry Pi, or before both of them? (one for both oft them, or one for the Raspberry Pi and one for the printer?)

It depends on where the EMI is coming from. You might need one or you might need two.

Here's one from Amazon but I'm sure you can find something that suits your needs with a bit of searching.