Jump to content

FILAMENT_SENSOR in Tinkergnome


Recommended Posts

Posted · FILAMENT_SENSOR in Tinkergnome

Hi everyone,

good evening ;)


I've been printing with my trusty UM2 for a while now, but there's something that i'm missing.


A sensor that pauses my Print and lets me change the Filament, when it runs out.

I want to use a mechanical NC-Endstop-Switch (normally closed) and later on, i might switch to an optical Sensor, depending on how well the mechanical one does.




I don't want to use Octoprint(for now). And Tinkergnome seems to support it.



Part of Pins.h in Tinkergnome 16.08.2:


 #ifndef FILAMENT_SENSOR_PIN#define FILAMENT_SENSOR_PIN         -1  // PC7 = D30; PD7 = D38#endif


Is there some guide on how to connect my switch to the UM2-Board and how to activate it in the Firmware?


At the moment I'm still using the original UM2-Marlin.


Thank you very much. :)





  • Link to post
    Share on other sites

    Posted (edited) · FILAMENT_SENSOR in Tinkergnome

    Afaik all is explained in detail in this link


    Also ofc you will need Tinkergnome firmware to make it work


    Thank you for your reply, I've already seen the Topic on the Forum.

    The "Instructions" are not that detailed. They are using a sensor called "Tunnel", which does a little bit more than detect outage of Filament. It also detects filament movement, it's connected to J23, which consists of 3 Pins(PC7, +5V, GND).

    So can I even connect a mechanical switch without electronics? Do i need an NO-Switch instead of my NC? Do I need something fancy like a Drop-Down-Resistor(like this)

    Sadly, i still don't understand how to realise that function.

    Edited by Guest
    switched switch-types by mistake; and grammar
  • Link to post
    Share on other sites

    Posted · FILAMENT_SENSOR in Tinkergnome

    So can I even connect a mechanical switch without electronics? Do i need an NO-Switch instead of my NC?

    It depends... :) The firmware feature works quite simple. In normal operation PC7 is either connected to +5V or not connected at all (it uses the Arduino-internal pullup resistor). As soon as PC7 is connected to ground (during printing from sd-card) the print will be paused. That means: your sensor has to connect PC7 with ground to trigger the pause, it doesn't matter how this is done.

    • Like 3
    Link to post
    Share on other sites

    Posted · FILAMENT_SENSOR in Tinkergnome

    With your mechanical idea, you need an NC when you switch the ground to PC7. But you can also use an NO when you switch the +5V.

    The best way in my opinion is to use the NC with ground.

    Every thing else has Tinkergnome described.

    • Like 2
    Link to post
    Share on other sites

    Posted · FILAMENT_SENSOR in Tinkergnome

    @Tinkergnome & Novastorm

    Thank you :-D

    I see, my NC-switch (that I already have) will do quite nicely.

    (since it will be triggered, when filament is present = open)

    You helped a lot, I'm going to try it out, as soon as I designed myself a mount for my bearing and switch.

    Greetings friedsemicon

    Danke ihr Beiden, sehe gerade, dass ihr auch aus Deutschland kommt ;-)
    Ihr habt mir echt geholfen
    Gruß friedsemicon

  • 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

      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
      • Ultimaker Cura 5.6 stable released
        Cura now supports Method series printers!
        A year after the merger of Ultimaker and MakerBotQQ, we have unlocked the ability for users of our Method series printers to slice files using UltiMaker Cura. As of this release, users can find profiles for our Method and Method XL printers, as well as material profiles for ABS-R, ABS-CF, and RapidRinse. Meaning it’s now possible to use either Cura or the existing cloud-slicing software CloudPrint when printing with these printers or materials
        • 9 replies
    • Create New...