I finally released the design files of my 3D printed tricopter. Even if code is not so cleaned, full customisation can be done thanks to OpenSCAD.
This project was a way to try OpenSCAD for such design instead of traditional CAD like Solidworks and it works really well, it just took me some time to find a way to organise the code. But it allows to add some warnings if input data does not match or automatically compute the length of carbon rods used for the arms.
Everything is on Github or Thingiverse.