hi
I tried to implement a proxy with the https://code.google.com/p/garmin-gns-430-530-interface/, but it didn't work. Maybe to less programming knowhow:-(
The real devices have as far as I know a serial bus. But I was not able to conect the trainers by serial com.
There're some old treads about the serial com with real devices:
https://www.mail-archive.com/flightgear ... 28187.html
https://www.mail-archive.com/flightgear ... 20564.html
http://flightgear-devel.narkive.com/apX ... o-a-garmin
Lots of info to read!
Regards
Hansjörg