A robotic device for moving at least one object between locations, including a
servo motor system having a single servo axis for effecting motion in at least
two directions of motion. The robotic device includes a link arm rotationally coupled
to said servo motor system for lifting and placing said at least one object, a
head assembly having gripper arms for gripping and releasing said at least one
object at said locations. The head assembly includes a leveling mechanism for maintaining
said at least one object in a desired orientation, and a split ring sensing mechanism,
disposed between said gripper arms, for determining the presence of said at least
one object.