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ARC Pro

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#1  

EZ-B does color, motion, and face tracking using the wireless camera, just to go to Control->Camera and set it up in ARC. No sensors needed.

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Netherlands
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#2  

If you want to have the analog values for RGB, SparkFun has a breakout board for that.

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Netherlands
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#3  

Or if you're into I2C, this one is cheaper.