Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  

Filament Jam/Clog/Empty/Tangle Monitor

Recommended Posts

Hello, I'm new to the ultimaker forum and I do not own an ultimaker. I'm a long-time Makerbot user, but I'm eying the ultimaker more closely due to changes at makerbot.

I have a question for you guys, though.

I've implemented and launched a filament monitor that interfaces with the makerbot firmware and triggers a print pause whenever a filament problem is detected. My device flips the voltage on a GPIO pin on the makerbot motherboard (a repurposed endstop)

I'm wondering if such a feature exists in the Ultimaker firmware. This would allow my device (or others) to put the bot into an active pause state for any reason.


Here is the device I've designed, included are videos and an off-page website.

Can this be supported by the Ultimaker?



Share this post

Link to post
Share on other sites

Welcome to the forum. Im not aware of anything like this for the UM2 at the moment, but i kind of remember somebody doing something similar for the UMO. I`m sure as everything is open source here, some brainy people could help you get this going on an ultimaker :)

Which changes at makerbot are making you think of changing?


Share this post

Link to post
Share on other sites

I believe that in general the marlin firmware has a pause feature and there are expansion connectors on the UM2. While you might need to do some custom coding in the firmware, it should be doable.

The nice thing about UM is it is open source.

Here is the controller layout and schematic:


And the firmware source:



Share this post

Link to post
Share on other sites

Interesting, I'll look into the firmware and see if it's something that could be easily integrated.

As to the changes at Makerbot, since stratasys became involved, it seems some internal politics may have led them to release their new printer long before it was market ready. We run several Replicator 2 and 2X where I work at goretex medical. I've personally been using Makerbot since the TOM days. We were excited when we got the gen5 printer, but it was kind of a nightmare. And we're only one of many many users that have downgraded back to the R2... Which Makerbot just discontinued, probably because it was undercutting sales on their newer (inferior) machines...

It's a long story.

Anyway, thanks for the tips, guys.


Share this post

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
Sign in to follow this  

  • Our picks

    • Ultimaker Cura | a new interface
      We're not only trying to always make Ultimaker Cura better with the usual new features and improvements we build, but we're also trying to make it more pleasant to operate. The interface was the focus for the upcoming release, from which we would already like to present you the first glance. 
        • Like
      • 86 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 replies

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!