The Crowtail- IIC Color Sensor is based on the color sensor TCS34725FN with digital output I2C. The circuit's layout is based on the 3x4 array of filtered photodiodes and 16-bits analog-to-digital converters, you can gain the color chromaticity of ambient light or the color of objects. Of the 16 photodiodes, 4 have red filters, 4 have green filters, 4 have blue filters and 4 have no filter(clear).