Use same Arduino code for ROS comms and windows comms (Phobos)

[ghost]

The current method of serial communication requires an upload of a different Arduino sketch than the one used in the Phobos ROS package. This means the Arduino has to be re-programmed before the IMU and hardware trigger can be controlled in each of these environments. This is due to a difficulty in being able to read/write complex rosserial messages in the windows QT application.