@joergs5 Wall painting seems like a cool use case.
There are plenty of small projects doing that (or something similar):

https://www.youtube.com/watch?v=_mTvSju3d6o
https://www.youtube.com/watch?v=T0jwdrgVBBc

here's a CNC
https://www.youtube.com/watch?v=y60q6U7NjTQ

I'm currently working on adapting the hangprinter to allow more anchors in this PR:

https://github.com/Duet3D/RepRapFirmware/pull/585

But perhaps it would make sense to go lower than 4 anchors for some use cases too?

Thanks for the trikarus link, cool stuff.
Regarding your code, I'm not in a hurry. I'm not ready for working on the extra 3 rotational ABC axes since I still didn't get the basic xyz axes to work, and that is the part I want to read more, to see what you have done. Whenever you can share it, it would be awesome to have a look.
Thanks.

jtimon opened this pull request in Duet3D/RepRapFirmware

open 3.4 WIP: Allow up to 9 anchors/motors to be configured in hangprinter kinematics. #585

@joergs5 Is this work still active?
I wanted to take a look at the code to see what you're doing with the extra degrees of freedom, because I'm myself working on a modified hangprinter-like kynematics with 6 degrees of freedom. I only needed 6 steppers instead of 4 for the extra degrees of freedom, but I'm using 8 because I wanted to keep things squared and hopefully be able to get more speed with 8 motors, certainly I will have more torque.

Anyway, the links to the code at the beginning of the thread are broken and I can't find it in your github account. Sorry I haven't read the whole read, but it's kind of long. Can you point me to the code?

Thanks in advance.

@jay_s_uk Thanks a lot.
Well, I was planning on using the EXP1 and EXP2 for a tft but if this is my only option for expansion, oh, well, I can use only the web interface, I guess, no big deal. Having an extra driver for the extruder is more important. Otherwise I could move to a 6 rope configuration from the current 8 rope configuration.
I would to CAD everything again, but I haven't started coding the new kynematics anyway.

Thanks again, I was asking on reddit but not getting many answers:

https://www.reddit.com/r/3Dprinting/comments/wubt9g/is_the_octopus_board_compatible_with_any/

https://www.reddit.com/r/BIGTREETECH/comments/wuysen/how_can_i_expand_an_octopus_pro_429/

@o_lampe Sorry for replying to this old post. But I have an octopus pro (429, with RRF) and I was wordering if I could do this same thing with it. Does anybody in the thread know?
If not, could I expand it somehow else? could I, for example, use the CAN interface to connect it to duet expansion boards or would that not be compatible?
Could I connect several different boards to a raspberry and make them communicate that way, perhaps (I know this is possible in klipper, but not sure about RRF).
Sorry again, perhaps I should start a new thread.