Based on digital addressable lighting interface (Dali), coordinator and intelligent gateway, elf series projector will self-organizing wireless network. We will visit or send order to intelligent gateway by apps based on NB smart phone to change elf projector color temperature from 3000K-6000K, or making RGB lamp changing color synchronous. We built in self-developed L06B-A-DWMB4 driver board, by means of hierarchical design for NB RF chip and MCU chip as well as software optimization algorithm to make intelligent gateway fast organize 150 units projector into network with radius<100m. Under the premise of not affecting transmission distance we designed hidden antenna which make lamp with aesthetic appearance. All above tech realizes elf projector remote control of changing color according to seasons and festivals.