Described herein is a motion control apparatus for a camera and methods of use of the apparatus. The transceiver is configured to provide the predetermined area of reception using a high grain antenna and is configured to use ultra wideband communications to transmit data to the first transceiver at a rate less than about 100 MBs with a spectral power density below the predetermined level. A request examiner routine analyzes each collected request with respect to at least one attribute. The phase detector is further configured with a feedback loop to adjust any tracking error and provide a tracking output signal. It can be moved towards the anvil. The unit of AC LED micro-dies comprises two LED micro-dies arranged in mutually reverse orientations and connected with each other in parallel, to which an AC power supply may be applied so that the LED unit may continuously emit light in response to a positive-half wave voltage and a negative-half wave voltage in the AC power supply.