First PrototypeFirst concepts uses a servomotor to release a rubber band.
Problem: Rubber bands available were resistance caused torque on shaft. Servomotor needed to release rubber band draws too much power. |
Second PrototypeSecond concept uses a spring loaded claw to keep the claws close. A servomotor opens the claw by pulling a wire from the servomotor to the claw.
Problems: Reliability of the spring mechanism. |