Since the inception of the Smart Dust project roughly four years ago, some progress has been made toward the realization of a fully autonomous cubic millimeter sensor node. The smallest mote currently displaces roughly ten cubic millimeters, and contains an oscillator, digital controller, light sensor, analog to digital converter, optical transmitter, optical receiver, and multiple solar power supplies. Details of this sensor node will be presented, as well as the current plans to shrink its size while increasing its capabilities.