Getting communication with Arduino bluetooth is definitely trickier than your average microcontroller - but considering all the leg work usually involved in bluetooth applications, it is a great addition. Here are the steps I figured out after about 3 hours of trying.
1) http://www.arduino.cc/en/Main/ArduinoBoardBluetooth has the basic info, but not really a user friendly instruction IMO
2) Set up your bluetooth with arduino before you open the arduino programming environment
--the passcode is '12345'
3) Open arduino and set the serial connection to 115200
4) put the following in your set up code:
Serial.begin(115200);
5) restart the arduino on each load. This is what got me. You have to hold down the restart button for about 15 seconds and then hit upload immediately.
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Another note on this subject:
You have to already have your bluetooth set up as a serial port.
Arduino will list that it has Bluetooth options, but it is all a lie! If arduino has successfully been added it will be listed as something like:
/dev/cu.ARDUINOBT-BluetoothSeri-1
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