In fig. sr 1.1 the mechanical parts (servo, horns, brackets) needed can be seen. In fig. sr 1.2 it can be seen how the motors are connected using the motor brackets. The robot has a total of 16 servo motors. Two motors each can be grouped into a single module thus making a total of 8 modules that form the robot. Fig. sr 1.2 shows one of those modules. As it can be seen the two motors are connected perpendicular to each other using the brackets i.e the output axis of the two motors are at 90 degrees offset to each other. This is particularly important as this enables the robot to move in 3D. Imagine if the axis of all the motors are parallel to each other then the robot can only move in 2D. Motions such as side rolling won't be possible in that case. Next fig. (sr 1.3) shows how each module is connected to another module. Here also they are at 90 degrees offset to each other.