ESP8266 RGBWW five-way dimming driver board Lightning

What can give 200% bonus to various attributes? That must be RGB!

My two favorite effects: breathing light and gradient, can be vividly displayed in RGB, so I also have a special liking for RGB, so I will also use this kind of RGB light in my home in the future, one is for lighting, and the other is for atmosphere. Through automated linkage, you can greatly enrich the colors in your home ~ RGB, which is red, green and blue, displays ever-changing colors through the blending of three colors in different proportions. RGBW has more white light than RGB, and RGBWW has more color temperature adjustment than RGBW, that is, warm and cold light. To be precise, the board I designed is called an RGB driver board. However, the RGB driver boards available on Xbao are basically three-way RGB. The most common application scenario for home lighting is still white light. RGB can pass through three channels. The color is fully brightened and white light is produced, but the brightness is not enough. W can increase the brightness by one level. WW can also adjust the color temperature under high brightness. Students who have used iPhone must know the original color display of iOS. The screen can be adjusted according to the external light. Different color temperatures allow the eyes to adapt to various environments, restore colors, and improve the reading experience; I especially like the warm feeling of warm light at home, so RGBWW is essential. In the future, I will also link it with environmental sensors to achieve The same dimming effect as the iPhone, adjusting the indoor lighting color temperature according to different lighting conditions. Of course, this five-way board is completely backwards compatible and can basically work with all light strips on the market.

The size is 70x63, and the five outputs are connected to:

Red is on GPIO15 Green is on GPIO13 Blue is on GPIO12 White 1 (W1) is on GPIO14 White 2 (W2) is on GPIO4

The reset button of 8266 is removed from the circuit, and there is only one boot button for downloading the program. Of course, after using the serial port to burn the program for the first time, you can use OTA to upgrade. The boot button can actually be omitted, but it is retained for the convenience of the first download. The buck circuit uses MP2451, which supports input up to 36V. But please refer to the power supply voltage of the light strip, which is generally 12V or 24V. The MOS tube design uses DTU35N06, with a maximum continuous current of 35A, which is enough to build a light bar. You can also use other MOS tubes. Just look at the parameters and replace them. I actually used AOD484. The pad I drew is super big. , so the N-channel MOS can be replaced directly without any brain. A piece of 74HC245 is used between the GPIO and the MOS tube for protection, but it is added for stability. It can also be used without it, just short the pins A to B. In order to withstand large currents on the back of the board, the bottom solder resist of the main power supply is dug out, and tin can be piled on top.

Using ESPhome on the firmware is more convenient both in configuration and use.