Jump to content
UltiMaker Community of 3D Printing Experts

Print Core Wiring


Recommended Posts

Posted · Print Core Wiring

One of my prints came unstuck during printing and the failure caused the material to build up around the hotend. It was quite a job to get the material off of the print head and in the process I have pulled out the heater and sensor wiring from the print core chip. I have tried re-wiring it myself by comparing the pattern to other print cores I have but when I came to use it the hot end went up to around 350 degrees before ending in an error. 

 

Is there a wiring diagram of the print cores anywhere or are there any other issues I should be looking at when reinserting the wires back into the chip?

  • Link to post
    Share on other sites

    Posted · Print Core Wiring

    You may have damaged your electronics inside the print head.

     

    You wired it up properly otherwise it either would not heat up or it would not read back a temperature.

     

    What you did wrong is you created a short somehow.  There are 5 contacts - there are 4+3+2+1 or 10 possible shorts.  Check every combination.  The left two pads should be the heater so around 25 ohms.  The right two pads should be the sensor so around 109 ohms at room temperature.  ALL other combinations should show as an open (certainly > 200 ohms).  The short would have to be less than 5 ohms to cause the heater to not stop heating up.

     

    MOST likely location for the short is between where the right hand heater wire is right next to the left hand sensor wire.  There's probably a tiny tiny strand of wire bridging the gap there.

  • Link to post
    Share on other sites

    Posted · Print Core Wiring

    You were right!

     

    The fabric conduit around the outside had frayed down a bit and the two wires were contacting down near the plastic so it wasn't easy to see.

     

    Thanks for the help and hopefully it will keep working well! I may have tidy up the wires a bit to stop it happening again.

  • Link to post
    Share on other sites

    Posted · Print Core Wiring

    I just hope you didn't damage any of the circuit boards in your printer - either the one in the print head or the "marlin" one underneath.

  • Link to post
    Share on other sites

    Posted · Print Core Wiring

    I hope so too but so far, so good.

  • 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
     Share

    • Our picks

      • 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
        • 10 replies
      • UltiMaker Cura 5.3.0-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
        • 16 replies
      • New here? Get ahead with a free onboarding course
        Hi,
         
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Like
        • 14 replies
    ×
    ×
    • Create New...