[Free][Windows only] UE4Duino 2 - Arduino (COM port) communication

  1. Not fixed. I’ve use very high speeds already.
  2. At 9600 or otherwise, as many ports as Windows can work with. Even with numbers of 10 and above.

BTW, if you’ll want to transfer a lot of different variables at once, you might want to create some kind of protocol, like I briefly described in this post.