Some time ago I created a Bluetooth control app in app inverter 2. I had planned to clean up the code (blocks) before releasing the aia file but never got round to it.
Recently I've been asked a lot for the aia file so I decided to post it without the clean up. See Arduino Bluetooth Control | Martyn Currey
I'm sure the code can be more efficient but it served it's purpose (I used it to learn AI2). Maybe of interest to people who use AI2.