Jump to content
Ultimaker Community of 3D Printing Experts

FYI: Ulticontroller bugs with PID and Max Acceleration


Recommended Posts

Posted · FYI: Ulticontroller bugs with PID and Max Acceleration

Following on from my work on the retraction speed problems, I've been digging further into the Marlin source code, and discovered a couple of problems with the Ulticontroller (and yes one of these is also thanks to Bug-Finder-In-Chief, Joergen)...

I've written fixes for these, which I'll offer upstream, but for now, Ulticontroller users (or any panel come to that) might want to be vaguely aware of the following:

1) In Control->Temperature, the I and D settings for the PID are displayed wrongly (i is about 8 times too small, D about 8 times too large). If you use the controller to adjust these to the 'right' values you will actually be setting them wrongly.

2) After making changes to PID values in the Ulticontroller, the new values you set aren't actually used unless you save to the EEPROM and then reset the printer.

3) Similarly for Max Acceleration settings, any changes made in the UC wont take effect until you save them and then reset the printer. (Not even restoring the saved or default settings will have an effect - currently the maximum acceleration settings are read exactly once, at power-up/reset).

These aren't huge problems, unless you're trying to fiddle with these settings, then they are a real pain :-) Hopefully these fixes will make their way upstream before too long, but in the meantime if anyone wants to roll their own hex files, you can find my fork of Marlin here... this is what I'm using currently, but use at your own risk, of course:

https://github.com/illuminarti/Marlin.git

(You would want the Menu_Fixes branch - it is the current Ultimaker/Marlin_v1 with these fixes applied. It also includes last week's retraction speed fix - caution: your retractions may now be a lot faster than you are used to).

 

  • Link to post
    Share on other sites
    Posted · FYI: Ulticontroller bugs with PID and Max Acceleration

    thank you, Mr. bug-squasher-in-chief :-)

    I tuned my UM to 30mm/sec retraction speed, and it is working beautifully, it is great to really maximize your machine and your printing speed

     

  • Link to post
    Share on other sites
    Posted · FYI: Ulticontroller bugs with PID and Max Acceleration

    Awesome, this saves me quite a bunch of work (as I was aware of the bugs, but I hadn't found the time to track them down and fix them), so I'm very happy that you are helping out here!

     

  • 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
    • Our picks

      • Talking additive | The 3D printing podcast
        Why should we be the only ones asking questions? Join us and ask Jabil all your questions on September 22nd 5pm CET
          • Like
        • 3 replies
      • Ultimaker masterclass: Optimizing your Ultimaker Cura workflow
        Save your seat for either broadcast on September 23.
        What will you learn?
        · Best practices for iterative print preparation and every lesson you should learn from each print
        · The right way to use per-object settings and when they are most useful
        · Easy-to-use resources for anyone who wants to develop their own printer definitions, plugins, or print profiles
        · How to optimize print profile settings and whether to “keep” or “discard” changes
        · When is the right time to export your drawing from CAD? (Based on Ultimaker Cura’s surprising power as 3D control software)
        · And a whole lot more tips and tricks!
         
        How can I join?
        This free masterclass will take place twice:
        1. 11am CEST (5pm SGT, 5am EDT)
        2. 5pm CEST (11am EDT, 8am PDT, 11pm SGT)
          • Like
        • 0 replies
      • Do you use 3D printing at work? Let us know
        It doesn't matter if you are using 1 Ultimaker or 10, there is inspiration in everything. We're looking for ...
        • 1 reply
    ×
    ×
    • Create New...