I would like to know how NAO's hands work (if anyone knows). He only has 25 servos (one more than my robot) yet can independently open/close each hand. If anyone knows how, i would like to know! thanks.
EDIT: What I'm asking is how one servo can operate two hands independently if all the other servos are used for his body movements.
Here are the servo counts:
Head 2 DOF
Arm 5 DOF in each arm
Pelvis 1 DOF
Leg 5 DOF in each leg
Hand 1 DOF in each hand
In addition to @doc's post,
Each hand has it's own servo.