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A simple, example application of the 9DOF MARG sensor array and orientation filter shown in a previous video.
When the angles of the camera pan/tilt/roll unit are controlled to be equal to the angles of the sensor, the camera points in the same direction as the sensor. An example use of this would be to have the sensor fixed to a persons head and the camera look in the same direction as the wearer.
When the sensor is fixed to base of the the pan/tilt/roll unit and the angles of the unit controlled to be equal to the negative of angles measured by the sensor, the camera direction is stabilised to always be level and pointing in the same direction. This may be useful if the camera is to be mounted on a moving platform; e.g. a helicopter.
Hardware used in video: Sparkfun 6DOF IMU Razor (ADXL335, LPR530 and LPY530) with gyroscope RC HP filters removed, Sparkfun HMC5843 breakout board (low ESR cap replacement), 3 R/C servos, x-io Board with .NET library (www.x-io.co.uk).