No, only the wiimote itself. I don't think motionplus even existed back then. I also removed the limit of 8 devices by using a glib array instead of a static c array. (Never actually had that much devices to try it out, but unless bluetooth has a limit i don't see why it should be there.)

If i recall correctly it wouldn't be hard to implement new controllers, as long as you know what signals they send. (Which is easy to find out.)