This robot arm has many degrees of freedom. This means it can pick up a variety of things, making it extermely useful. How to control: activate group 3 and use roll to rotate the crane. Pitch up/down controls the arm's reach. Activate group 1 and use vtol to adjust crane height, use throttle to control wrist joint, and finally, activate group 2 to control the claw. HOW TO SWITCH BETWEEN VTOL GROUPS: when one input is complete, deactivate the group, reset VTOL back to normal, and then activate the next group. THE CHALLENGE: take the block from the front of he crane and move it to the back. Feel free to use it on larger assemblies! Have fun!