u/curious_but_troubled

This is the most common type of configuration I could find but I don't understand how it works if both the shaft and the housing are fixed by some other means.

https://preview.redd.it/4rh8ze67fz1h1.png?width=1052&format=png&auto=webp&s=a334fca7c2b2acf3fecec49ded7e978da83a8bad

If both can't move the space in which the bearing is restricted never changes, right? So is the requirement for these kind of preloads that the shaft can freely move a bit axially?

https://preview.redd.it/0mman8xogz1h1.png?width=551&format=png&auto=webp&s=b182e9063d544d9dcdcc9668a49fdc346b14ce71

Then I also found this but I don't understand what the red part is for. Because the blue housing is already acting as a spacer, so we have two? When the flange gets tightened both inner racing are just compressed, how does this achieve any kind of preload?

https://preview.redd.it/pu6gld0d8y1h1.png?width=202&format=png&auto=webp&s=b1548724acc5848cdf40a55dcf0f63b532c55472

There's no option to delete the tab/document in my Onshape document. I've uploaded the wrong PDF.

Same for this:

https://preview.redd.it/rz86jurw9y1h1.png?width=277&format=png&auto=webp&s=31a526ced5af1c6654e521137be88115f7ec30cf

Can't delete.

My current project uses my own C++ header-only libraries and I want to include them. Currently I just have them next to the .ino file but I'd like to create a /src and /include directory structure. Is it possible to add an include directory so that I can use <> syntax to include them instead of ""? I know that there's a libraries directory but it's not really git friendly to split my source from my headers.

Edit 1: I guess this works, I'm not really used to the CLI tho:

project/
  src/
  include/

arduino-cli compile \
  --build-property "compiler.cpp.extra_flags=-I./include"

Edit 2: Just found this CMake approach: https://disconnected.systems/blog/arduino-and-cmake/ (not updated in 12 years tho)

What is the end of a SCARA robot. It appears to be some sort of ball screw that allows for both up and down but also rotational movement. I can't find this product on any manufacturers site.

Edit: Picture in comments

I'm currently working with an RP2040 using the Arduino Framework and PlatformIO and would like to use std::variant and other RTTI features in my firmware. Is there any way to enable this feature?