An off-line micro device processing system is provided having a longitudinally extending feeder/processing/buffer system for providing processed micro devices to a pick point. A portable robotic system has a longitudinally extending robotic system body extending parallel to the longitudinally extending feeder/processing/buffer system and a transverse support on the robotic system body transversely positioned relative to the longitudinally extending robotic system body. A pick and place mechanism on the transverse support picks micro devices from the input, transversely moves the micro devices, and places the micro devices on the output system for receiving and storing processed micro devices.