but cant figure out how to write the code to send the heart rate results through the Bluetooth module.
You don't intend to tell us:
- how the bluetooth device is connected to the Arduino
- whether you know that the device pairs with the droid
- whether you have any communication between the droid and the bluetooth device/Arduino
And yet you want us to tell you how to complete your project. I'm afraid you've hooked the cart on the wrong end of the horse.