Marlin: parallel control of independent axis

Hi,

Q1:
I have a project planed where I'd like to do control up 5 additional stepper motors/axes parallel to the 3 steppe XYZ axes and the 2 extruder drives.
I'm thinking of something like G1 X10 Y10 Z10 A5 B15 C25 D35 ..... Where the additional axes are not linked to the XYZ axes.

Q2:
In line with my first question I would like to know if it is possible and how difficult it is to implement new kinematics in Marlin.

Thanks for the help
Daniel

Q1 isn't a question. Marlin cannot do this, It s a 3 axis machine with two tools that have limitations.

Q2 Extremely difficult if you wanting to add axis (think team of 3-4 programmers working 3-4 months)

I rarely say this, But you should look into reprapfimware running on a duet if you need that many axis.

with BTT GTR v1.0 and M5 board and Marlin 2.0.5.3 you can have XYZ and 8 additional axis/tools.

[github.com]
[github.com]