Color Sensor, based on TCS3200, is a complete color detector capable of detecting static color. The output of the sensor is a square wave with frequency directly proportional to incident light intensity. It also supports fill light by on board LEDs. It includes a TAOS TCS3200 RGB sensor chip and 4 white LEDs. The TCS3200 can detect and measure a nearly limitless range of visible colors. Applications include test strip reading, sorting by color, ambient light sensing and calibration, and color matching, to name just a few. The TCS3200 Color Sensor board makes it very easy to sense and record the light intensity of the general red, green, and blue spectrums of visible light while rejecting IR from light sources. You can then use these color sensor readings for the purposes of logging and finding patterns, or creatively calculate and make control decisions in your electronic projects. The TCS3200 GBB Color Sensor For Arduino has an array of photo detectors, each with either a red, green, or blue filter, or no filter (clear). The filters of each color are distributed evenly throughout the array to eliminate location bias among the colors. Internal to the device is an oscillator which produces a square-wave output whose frequency is proportional to the intensity of the chosen color. Features:-   Single-Supply Operation (2.7V to 5.5V) High-Resolution Conversion of Light Intensity to Frequency Programmable Color and Full-Scale Output Frequency Power Down Feature Communicates Directly to 5V Microcontroller S0~S1: Output frequency scaling selection inputs S2~S3: Photodiode type selection inputs OUT Pin: Output frequency OE Pin: Output frequency enable pin (active low), can be impending when using Support LED lamp light supplement control