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TCS3200 color sensor is built on the principle of three primary colors. Concretely speaking, TCS3200 allows only one specific primary
color to go through and blocks other primary colors if a specific color filter was chosen. For example, when red filter was
chosen, only red light can pass through while blue and green lights will be blocked out, so that we can get the intensity of
red light. The strength of blue and green lights can be got in the same way. Finally, By analyzing the light strength of these
three color, we can recognize the color reflected onto TCS3200.

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