In this paper, LED lighting system is realized by using Bluetooth wireless communications and smartphones. A blue tooth module with a lighting control function is manufactured by miniaturizing a development board of TI company and the volume of LED dimming system as a whole is reduced. And atrial product is materialized by designing a hardware composed of the manufactured blue tooth module, LED down light equipped with degree warm white and cool white, and 2-channel LED driver; and LED dimming software. The materialized trial product is controled in terms of the brightness and color temperature of LED light source using an application of a smartphone. The experiment showed that the users can easily control the intensity of illumination of LED light source by using the scroll bar of the applications of smartphones. In addition, the color temperatures of both warm white and cool white can be controlled, and when the color temperature of the trial product using the manufactured Bluetooth module is compared with that of a trial product of TI company, they show the same color temperatures.
