Pixhawk2-based quadcopter

Hello!

I am looking for a pixhawk 2-based quadcopter setup for my research.

I am not sure though which frame, motors, etc. I have to use with the pixhawk 2 flight controller.

Can any please advice?

Thanks!

No different than a PH1 on the points you mention.
Frame motors etc are all a matter of design and function.
You build it for what you need it to do.
Then put a PH1 or Cuber (PH2) in it
The only real consideration is it is recommended to run the Cube on 3.5

Ok, thank you. What is 3.5?

latest beta firmware