1Low-cost color recognition sensor module is with low power consumption, small size and easy installation. 2Color sensor's working principle is that the lighting LED emits light and illuminates the measured object. 3After the object, return the light to detect the RGB ratio value through the filter, which is to identify the color based on the RGB ratio. 4This module has two ways to read data, namely serial UART (Time To Live level) or IIC (2-wire). 5Baud rate of the serial port is 9600bps and 115200bps, which can be configured. 6There are two modes of continuous and inquiry output, and the settings can be saved after power off. 7And there are 7 simple color recognition, no need to calculate RGB values. Also, the sensor can adapt to different working environment and connect with single chip computer and computer. 8The module can additionally set the working mode of a separate sensor chip, as a simple sensor module, the microcontroller unit does not participate in data processing. 9Provide 51, stm32 microcontroller communication program, Schematic diagram and internal MCU source number are not provided.