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With the continuous improvement of the modern family living standards and the increase of work pressure, people in the daily home life not only pursue comfort, but also pay more attention to the personalization, entertainment and convenience of home life. The color-controllable color LED bulb can change the color of the emitted light according to the user's instructions. It is very suitable for family birthday parties, holiday parties, Chinese New Year and other occasions, creating a different atmosphere and reflecting individual pursuit.
However, due to the complexity of the control of color LED bulbs, the traditional switch panel is difficult to complete the color setting; on the other hand, although some manufacturers have developed controllers and control panels specifically for color LEDs, this special control Not only is the price expensive, but it is also cumbersome to install and requires professional assistance to complete the installation and commissioning. It is precisely because of these limitations that color LEDs are difficult to be widely promoted in home applications.
The popularity of personal mobile smart terminals has brought a good opportunity for the widespread use of color LEDs in the home. Smartphones have a good human-computer interaction interface and have become an indispensable assistant in the daily life of many consumers. As long as an application for controlling the color LED light bulb is installed on the smart phone, the user can provide rich control functions and convenient operation modes, thereby overcoming the defects of high cost and difficult operation of the conventional color LED controller.
Smartphones have Wi-Fi or Bluetooth wireless communication capabilities, so controlling color LEDs via wireless communication is the best choice. It is only necessary to install a wireless communication module with intelligent control capability on the color LED bulb, and then install an application software on the smart phone to complete the switching and color change control of the color LED, eliminating any other form of installation work, very Suitable for popularization in the family.
The control schematic of a typical wireless control color LED lamp is shown below: 
The core of the wireless control color LED bulb is the wireless module. The module can not only receive the user's control commands through wireless communication, but also can change the brightness of the different color lamp beads through three-way pulse width modulation (PWM) control signals according to the control command. After the light is mixed, the color LED bulbs are illuminated. Same color as the user requested.
Unfinished: For more information, please refer to the February issue of Gaogong LED's "LED Good Products" magazine. 
Application and design of wireless color light control system
[Source: Gaogong LED's "LED Good Products" magazine February issue / Qian Min]