Begin with a basic frame (4 wheels, 2 motors).
Take a metal sphere and cut it in half, designating one piece to be the top, and one for the bottom.
Add brackets along the circumference of the largest part of the bottom dome, so that they may be used to fit the sphere back together securely.
Add two pieces of wood into the bottom half of the dome, one on the side of it, and another across the center of the circle.
Mount a motor on the side piece of wood (To be used as a pivot to rotate the sphere)
Fixate the modified claw component on the center piece of wood, and secure it using a second piece of wood.
Mount the bottom half of the sphere on the frame using a bent metal strip
Add a flashing emergency light on the top half of the sphere
Drill out a small hole through which the nozzle of the sprayer/water gun component can go.
Drill out a second hole for the camera.
Create a small “hood” piece to be used to give slight protection to the camera component.
Solder wires onto all of the motors, then bring all of those wires to an organized, centralized location in the sphere
Mount 3 Sabertooth H-Bridges on the side piece of wood, next to the sphere motor
Get 2 six-channel wireless controllers, and 2 wireless remote transmitters
Choose channel assignments and bring the wires to the appropriate places on the H-Bridges
Wire the H-Bridges into the appropriate channels in the wireless transmitters
Attach battery holders with 8 AA 1.5V batteries, or a 12V power source
Take a board of wood and lay two metal strips, of the same size and shape, along it, with wires connecting it to screws drilled on the other side
Take two bottle caps and attach springs to the inside of them
Attach the bottle caps to the base using screws.
Make a small square-shaped hole on the side of the robot, between the arm and the pivot.
Insert the USB port of an Arduino Duemilavone so that it sticks slightly out of the hole.
Take a breadboard and connect the Arduino board to the Sabertooth H-bridges.
Solder all the wires to the correct places, and label them properly to make them easy to identify.
Put hinges on the side of the robot so that the upper part of the sphere cannot be removed easily.
A final optional step is to spray paint the robot to make it more intimidating.
The robot is now completed.