Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  
ummaxx13

UM controller: USB port x disabled by hub (EMI?) problem

Recommended Posts

Hello,

I have a 3d-printer that uses UM controller as electronics (board revision should be be a v1.5.3), and I have a problem connecting to it from my Linux computer,

If I connect to the printer with e.g. Pronterface or Cura while I'm hooked via USB but with power supply off, I can get an answer from the Arduino Mega inside (and the Linux connection goes via /dev/ttyACM0), but when I flip the power switch on, the connection is dropped.

In Linux syslog I get a "USB port x disabled by hub (EMI?), re-enabling" error and then the available terminal becomes /dev/ttyACM1. If I try to reconnect to the printer with power on, it fails.

The only way to get the machine to print is to use an old laptop with WinXP... perhaps it is less sensible to electrical noise?

What should I do to troubleshoot and fix the issue? Add some kind of filtering on the power supply block and/or a 'soft-start' circuit? The PSU provides 19V so it's inside the recommended range for UM controller.

BTW: I'm building my own Ultipanel with sd-card support, etc. so I can avoid entirely the issue of connecting a computer to start a print :-P

Thanks

 

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
      • 14 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
      • 17 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!