Jump to content
UltiMaker Community of 3D Printing Experts

RAMBo Rev 1.1 layer shifts- can large gcode files cause glitches? Dying board?

Recommended Posts

Posted (edited) · RAMBo Rev 1.1 layer shifts- can large gcode files cause glitches? Dying board?

From 2016-2020 I ran a Makergear M2 with a RAMBo V1.1, and it worked well for thousands of hours. 


Eventually I mothballed the printer- it had become very worn, and it started shifting along the X-axis on a specific 14-hour print. However now I'm building a CNC machine, and would love to use the board- assuming I can be certain it isn't going to glitch out on me again. Unexpected motor movements during a CNC operation can be pretty dangerous.


Additional details:

  • The issue happened both when printing over USB and from SD
  • The shifting happened on one specific print, a big highly textured dome. The print was a 61mb gcode file. I didn't check to see if it would happen on other large prints
    • Looking at other old gcode, most prints were smaller than this, but it appears I printed a 96mb file at least once without issue
  • The shifting happened at random heights, and then would continue like normal
  • The shifting was not caused by nozzle dragging. At one point I watched the shift happen- the print was happening like normal, then it suddenly shifted a few mm, and continued
    • It was circular, so the X and Y motors were always working. During the shift simultaneously the Y stepper would stop moving, and the X stepper would move the head outside the perimeter of the print
  • This kind of problem had never happened in the thousands of hours of use prior, and I hadn't done any firmware/ slicer changes before it started happening
  • Was running M2Marlinx1619V firmware


My best guesses are A) The board is failing after many hours of service or B) The board was somehow being freaked out by a large gcode file C) Some other thing I hadn't thought of


Does anyone know what the cause could be? Should I just bite the bullet and buy a new board?

Edited by helix_3
  • 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

      • UltiMaker Cura 5.3 stable released
        In this stable release, Cura 5.3 achieves yet another huge leap forward in 3D printing thanks to material interlocking! As well as introducing an expanded recommended print settings menu and lots of print quality improvements. Not to mention, a whole bunch of new printer profiles for non-UltiMaker printers!
          • Thanks
          • Like
        • 31 replies
      • Here it is. The new UltiMaker S7
        The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
        So what’s new?
        The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
        The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
        The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. We also reversed the front fan direction (fewer plastic hairs, less maintenance), made the print core door magnets stronger, and add a sensor that helps avoid flooding.

        The UltiMaker S7 also includes quality of life improvements:
        Reliable bed tilt compensation (no more thumbscrews) 2.4 and 5 GHz Wi-Fi A 1080p camera (mounted higher for a better view) Compatibility with 280+ Marketplace materials Compatibility with S5 project files (no reslicing needed) And a whole lot more  
        Curious to see the S7 in action?
        We’re hosting a free tech demo on February 7.
        It will be live and you can ask any questions to our CTO, Miguel Calvo.
        Register here for the Webinar
          • Like
        • 18 replies
      • UltiMaker Cura Alpha 🎄 Tree Support Spotlight 🎄
        Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
        We generated a special version of Cura 5.2 called 5.3.0 Alpha + Xmas. The only changes we introduced compared to UltiMaker Cura 5.2.1 are those which are needed for the new supports. So keep in mind, this is not a sneak peek for Cura 5.3 (there are some really cool new features coming up) but a spotlight release highlighting this new version of tree supports.  
          • Like
        • 25 replies
    • Create New...