Update: New in Blender 2.64 — For randomizing material properties, the new Object Info node and its random number output could be an alternative to the driver technique described in this video.
This tutorial shows how to attach random number drivers to selected properties to make endless variations of an object in Blender 2.62.
Video Link >>> Variations: Random Number Drivers in Blender
Go from this
I found it easy to work with drivers on object and mesh properties. But I found it surprisingly difficult to get drivers to work on properties in material, texture, and node datablocks. This video will show you the secrets to coercing drivers to work anywhere:
- learn multiple ways to create a driver; when one method fails, another will work
- learn how to fix broken drivers after copying an object
- workflow tips for managing many drivers, objects, and datablocks