Should I include Arduino in my class diagram for the research documentation


I'm developing a Keyless Entry System as my graduation project, in this stage I have to make system design which i should draw a class diagram as follow, do you think that i should include a class for the Arduino since it's the main component for the system?

Speaking as an ex University lecturer ( professor if you are in the US ) then I would say yes.

In my case, I have an arduino class ( developed with Adruino IDE ), and from the other side, an android application. in the general class diagram, I'm i little bit confused, should I put all classes together (including the one in my arduino) in the same diagram !!