The PR2 by Willow Garage is able to autocalibrate on its own with a new ROS (Robot Operating System) software application.
This saves a considerable amount of time since the robot is left alone to work in order to calibrate its sensors.
And here it is in the video demonstration below.
For a remin
This is a companion discussion topic for the original entry at https://community.robotshop.com/blog/show/the-pr2-self-calibrates-on-its-own