Jump to content
UltiMaker Community of 3D Printing Experts

Ultimaker Cura 4.11 doesn't allow selection of the ttyUSB port


Recommended Posts

Posted · Ultimaker Cura 4.11 doesn't allow selection of the ttyUSB port

My computer is a Toshiba laptop running Ubuntu 20.04, my printer is a Creality CR10S.  My Linux is up to date.

I replaced the motherboard for my printer, a Creality CR10S.  I couldn't get Ultimake Cura to find it.  After much googling around, and some low level type work on my laptop, I discovered that the connection was on ttyUSB0, and that using Arduino GUI terminal function, the board was working at 115200 baud.  Then I went to GitHub and retrieved the software for Ultimaker

In the software source code I found: 

The line that shows this is in the Ultimaker source code: .  
the file is Cura-master/plugins/USBPrinting/USBPrinterOutputDeviceManager.py

133            # set CURA_DEVICENAMES=USB[1-9] -> e.g. not matching /dev/ttyUSB0
134            pattern = environ.get('CURA_DEVICENAMES')
135           if pattern and not search(pattern, port[0]):
136                continue

 

There are several issues with this.  First of all, port scanning is very poor practice.  If ports are in use, the system can be disrupted and may result in catastrophic failures, especially in systems used for production.  Second, it presupposes the way ports are named.  Thus a change in the OS would demand a change in your software.  The better approach is like that of Android where you can choose the port from a list, and for production, an editable entry in the configuration with appropriate comment on port selection.

  • Link to post
    Share on other sites

    Posted · Ultimaker Cura 4.11 doesn't allow selection of the ttyUSB port

    Since no Ultimaker printers use "USB printing" the plugin has not seen any updates or fixes for years and my understanding (after reading posts here and on GitHub) is that it isn't likely to be updated.  The main alternative is using RaspberryPI and Octoprint.

    The problems that occur when printing via USB are not unique to Cura.  Pronterface and Repetier Host have issues as well.  I was sort of enamored with printing via USB and tried to write my own program.  It quickly turned into a quagmire and I ended up throwing it all away in favor of a program that is a front end for the printer and controls the printing from the SD card.  It's much better when the printer can just pull the next line of code when it needs it rather than going through buffer over-runs and under-runs.

     

  • 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
        • 24 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
        • 22 replies
    ×
    ×
    • Create New...