With some Arduino-controlled automation you can make photography much more interesting, and a great example of the synergy between the two has been documented by Frederick Ford with his camera slider device. His slider is a dual-rail horizontal device which is mounted upon a camera tripod and gives the user much more control of the camera's position.
The slider uses an Arduino-controlled stepper motor and timing belts to move the camera along as required. This enables some interesting photography, and in conjunction with time-lapse exposures - the results are breataking... consider the following video of examples:
If you're interested in using an Arduino or compatible board for motor control - check out our HBRIDGE: DC/stepper motor shield. Based around the powerful Allegro A4954 H-bridge driver IC you can control two DC motors with complete ease, or one bipolar stepper motor. With connections for external power management, a complete beginners' guide and documentation - motor control couldn't be any easier. For more information and to order, visit the HBRIDGE: page.