On Sunday, January 6, 2013 8:20:09 AM UTC-5, Chris Davison wrote:
How do the V7 and Butterfly rate in terms of being open and do
they work with XCSoar and K8000??

I wrote the initial XCSoar driver for the V7. We got sufficient info from LXNav about the protocol to make things work. MC and Bug bias synchronization work as well as all air data and GPS exchange.

I also built a Bluetooth module for my V7 (you can just buy one now) and that wasn't a big deal either. So, no problems in this department with the LX stuff.

LK8000 supports the V7 as well, though I haven't tried it out for lack of an LK8000 installation.