Wall-E was a challenge for myself to build something completly different to my usual style and to try new things!
Wall-E's arms and head have track to constraints, and the treads are an IK setup, with stretching tolerance.
The two major highlights of this rig are the arm socket track and the tread controls.
The arm socket track is made up of several of blender's built in constraints, but with some additional python expressions for smooth transition into different parts of the track.
The tread controls allow you to animate each piece individually or to move the treads all at once in just one control.
Full Rig Breakdown Video
Arm Piston Tracking

Arm Socket Track

Asnchronous and Synchronous Tread modess

Head Tracking
