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Is the xBuddy board open source?  

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zapta
(@zapta)
Estimable Member
Is the xBuddy board open source?

The xBuddy is the electronic controller of the CORE One. Is it open source? Is the schematic and design files available?

I search at Prusa's github repositories but didn't find it.

Posted : 26/07/2025 3:23 pm
_KaszpiR_
(@_kaszpir_)
Noble Member
RE:

It's not released yet.
Prusa changed document release policy to release certain designs after long time, right now it is going to be probably many months after product launch ( closer to years, though).

See my GitHub and printables.com for some 3d stuff that you may like.

Posted : 26/07/2025 4:48 pm
Jürgen
(@jurgen-7)
Noble Member
RE: Is the xBuddy board open source?

The schematics are available, but not the layout files: 
https://www.prusa3d.com/page/open-source-at-prusa-research_236812/

Posted : 27/07/2025 2:55 pm
zapta
(@zapta)
Estimable Member
Topic starter answered:
RE: Is the xBuddy board open source?

 

Posted by: @jurgen-7

The schematics are available, but not the layout files: 
https://www.prusa3d.com/page/open-source-at-prusa-research_236812/

Thanks @jurgen-7, this is very useful.

Do you happen to know what kind of connector Prusa uses for the CORE One stepper motors?

Posted : 27/07/2025 3:45 pm
Sembazuru
(@sembazuru)
Noble Member
RE:
Posted by: @zapta

 

Posted by: @jurgen-7

The schematics are available, but not the layout files: 
https://www.prusa3d.com/page/open-source-at-prusa-research_236812/

Thanks @jurgen-7, this is very useful.

Do you happen to know what kind of connector Prusa uses for the CORE One stepper motors?

According to the schematic they are Molex Click-Mate connectors. (No shade if you couldn't figure it out. It takes practice to learn to read schematics.) The PCB male part is 5025840460, follow the link to the Molex product page to find the mating connector and find distributors.

Interestingly, when I went to the Molex Click-Mate product page, I saw a Molex Case study about Prusa's use of those connectors. Here is the link to the case study https://www.molex.com/en-us/about/case-studies/prusa-research-3d-printer-build-quality

This post was modified 1 month ago 2 times by Sembazuru

See my (limited) designs on:
Printables - https://www.printables.com/@Sembazuru
Thingiverse - https://www.thingiverse.com/Sembazuru/designs

Posted : 27/07/2025 9:03 pm
2 people liked
Jürgen
(@jurgen-7)
Noble Member
RE:
Posted by: @zapta

Do you happen to know what kind of connector Prusa uses for the CORE One stepper motors?

The motor connectors are shown on the first (main) sheet of the schematics. They are Molex CLIK-Mate 5025840460 connectors, https://www.molex.com/en-us/products/part-detail/5025840460

Edit: Oops, @sembazuru beat me to it. Funny -- after several hours of incubation time, two replies typed in parallel.

Posted : 27/07/2025 9:06 pm
1 people liked
zapta
(@zapta)
Estimable Member
Topic starter answered:
RE: Is the xBuddy board open source?

Thanks you both. Found it https://www.digikey.com/en/products/detail/molex/5025840460/2819018

I want to make adapters for this https://vector3d.shop/products/stepper-motor-analyser

Posted : 27/07/2025 10:59 pm
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