Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  
nick-foley

Printer freezes during mid-print, but can be started again by disabling steppers

Recommended Posts

So, as the title says, our Ultimaker occasionally freezes mid print. It stays at temperature, and stays turned on, and nothing in the Ulticontroller changes - but the print head stops moving.

We are printing from a Raspberry Pi, and so my initial assumption was that the client on the Pi had crashed, and I'd been trying to debug that.

However! Today we discovered, inadvertently, that if we use the Ulticontroller to "Disable stepper motors" while the printer is frozen, the printer starts working again. It then finishes the print without issue.

This makes me think it is related to the stepper motors or stepper boards overheating.

Is there any indication given by the Ulticontroller when the machine shuts itself down due to an overheated stepper board?

 

Share this post


Link to post
Share on other sites

Printing through USB seems to have lots of trouble for lots of users of many operating systems. Because of this most people recommend printing only using the UC. But one person did mention that when they bought a powered USB hub all their USB printing stalls stopped happening. I have no idea why. Maybe it was just a bad USB cable? Or better grounding of the USB cable?

 

Share this post


Link to post
Share on other sites

Some degradation or loss of the signal, I expect. I've certainly experienced issues with other USB devices that won't work if connected to the computer USB port via a cable but will if plugged directly into the port. The powered hub may start with a stronger signal and thus better stand the losses in the connecting cable.

 

Share this post


Link to post
Share on other sites

I have the same problem now, but I'm using ulticontroller. It switches to card removed in midprint and stops.

 

Ouch. Does disabling the stepper motors fix the problem?

I have never had this problem but it's probably bad contacts. You could clean both the card and the contacts inside the UC. I think rubbing alcohol (isopropyl alcohol) might be a good cleaner. Be gentle - you don't want to remove the amazingly thin layer of gold plating on those contacts.

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

Announcements

  • Our picks

    • Architect Design Contest | Vehicles.
      We're open for entries! - Design and submit your 3D designs of architectural entourage - vehicles - for a chance to win a large filament pack. Presenting an idea, an architectural design or something as big as an urban project isn't easy. A scaled model can really help to get your idea across.
        • Like
      • 25 replies
    • What The DfAM?
      I'm Steve Cox, an experienced engineer familiar with 3D printing. I wanted to share some DfAM guidelines with this community to help and make stronger parts.
      I'm also an Autodesk Certified Instructor for Fusion 360, so many of the images in ...
        • Thanks
        • Like
      • 23 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!