Making the doll

Thinking about a black box that could somehow make XOR operations
Thinking about parallel switching mechanism
The first idea using a rolling ball
Two possible realizations of switching mechanism
Try to draw a 3D-view
An improvement using two rolling balls to save time for elevating the ball
Trying draw a 3D-view of the two-ball system
I can't draw the 3D-view!
Thinking about a completely different method, because the problem of elevating the ball still remains.
New idea using water a stream ! (There are still logical misinterpretation in the drawing!)
Idea for a new switching mechanism using water

top mechanism interactive movie [making the doll] about Matarisama