Computer mice are good for lots of things besides the traditional use. The sensor is great for hacking to use a tracking device , a measuring device , etc. The mouse chips just keep getting smarter and cheaper. I will be collecting all the cool projects I can find and putting links to them in this post.
Where to buy ==========
Sparkfun has a nifty chip for $1.40. ADNS2620 - Optical Mouse Sensor IC Sparkfun.com
18 by 18 matrix 64 gray levels SPI interface
Possible Hacks ===========
Sensing Motion ..................
It should be possible to sense motion and differentiate between small creatures and large creatures and measure speed. With more than one sensor , one should be able to determine distance. From above ( the ceiling of a room ) one should be able to track an object.
tags 777mouse #mouseSensor 99guspuppet