We have created a couple of extremely compact down and dirty BT telemetry stations that turned out to be way more capable than originally thought of. In addition to being very handy telemetry stations, they even work as direct RC units through the modem link in the enclosure on the back of the Android hw. The Bluetooth telemetry link serves only a single purpose here instead of the cable connection: it helps maintaining the IP67 levels of both the tablet/phone and the industrial enclosures. You can read more about the phone version here: http://diydrones.com/profiles/blogs/miniature-stealth-phone-gcs-maybe-the-smallest-usable-ever
