OWI 007 Robotic Arm Trainer

The OWI Robotic Arm Trainer is a good introductory kit, requiring only a screwdriver to assemble. The kit is complete with five pre-assembled gearboxes and a wired controller that allow you to control the opening and closing of the gripper, rotation of the wrist, movement of the elbow and shoulder, and rotation of the arm on its base. The completed arm can lift up to approximately 4.6 ounces (130 grams).