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

Hacking BFB3000 endstop problem

Recommended Posts

I'm currently replacing the BFB electronics of a BFB3000 with an Ultimaker 1.5.6 pcb.

Keeping the old frame, motors, sensors and wiring of the BFB3000.

I stumbled upon a problem with reading out the endstops. :?

The endstops are reed contacts, but the cables run along the wiring of the stepper motors.

The Ultimaker endstop connectors take up some interference from the stepper motors.

This was no problem with the BFB board, because the sensors had a small network with 2 resistors and a capacitor.

What could this schematic be and look like?

Further twisting the cables (they are only partially twisted) could bring a solution, but I'm wondering if an network could also solve my problem.

Any help is greatly appreciated. :)

Share this post


Link to post
Share on other sites

NIce Hack!

would love to do that to our Schoolprinter.. also a BFB3000.

you could try to use shielded cables and rewire all endstops.. but i know that could be a longer task to do.

Thers also this sticky shielding mesh you could buy and wrap the endstop cables.

http://www.hollandshielding.com/223-R_F

... eld-en.htm

I had some interference problems on my ultimaker.

got lot of old usb cables around so i chopped them up an rewired all endstops and all additionnal fans on my Ultimaker. no problems since.

Share this post


Link to post
Share on other sites

You could try twisting or shielding. Else you could enable the "ENDSTOPS ONLY FOR HOMING" feature in the firmware, this will ignore the endstops during normal printing, which could damage your machine, but it will never ruin a print because of EMI.

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  

Announcements

  • Our picks

    • Architect Design Contest | Vehicles.
      We're open for entries! - Design and submit your 3D designs of architectural entourage - vehicles - for a chance to win a large filament pack. Presenting an idea, an architectural design or something as big as an urban project isn't easy. A scaled model can really help to get your idea across.
        • Like
      • 24 replies
    • What The DfAM?
      I'm Steve Cox, an experienced engineer familiar with 3D printing. I wanted to share some DfAM guidelines with this community to help and make stronger parts.
      I'm also an Autodesk Certified Instructor for Fusion 360, so many of the images in ...
        • Thanks
        • Like
      • 22 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!