Stereo camera sensor module

Capella - Stereo Vision Camera Reference Design
http://www.e-consystems.com/stereo-vision-camera.asp


How to synchronise two CMOS Camera Modules for Stereo Vision
http://letsmakerobots.com/node/29869

Thinking About Accelerometers and Gravity

Useful article about accelerometers and gravity by Dave Redell

http://www.lunar.org/docs/LUNARclips/v5/v5n1/Accelerometers.html


An accelerometer never senses gravitational acceleration.
or more specifically:
An accelerometer is a device that senses deviation from freefall.