With the new release v1.1 I've added shells. Now your project can be protected from physical impact. For the updates for to the repository: https://github.com/an-dr/simpleR .
Also, I've spent some time explaining in detail all the features of the framework. Here they are (copy-paste from the repo)
All the parts are made in the way so you don't have to re-print large volumes of plastic when you want to make a small change. Reprint only necessary parts.
I was not fully satisfied with my design for 2+ levels.
It has 3 flaws:
The middle level part is different with the others → it can be used only in 2+ configuration
The vertical mounts are significantly different for each configuration: 1, 2, 2+
While the bending of the construction perpendicularly the vertical mounts resist the bend, bending along the vertical mounts depends on the printing precision and might allow the levels to dance left and right.
Experiments with the LeOn v2 showed that having the same universal connector for both internal and external structures is not ideal. If there is no perfect fit between the cover, and internals it cases wrapping of the shell