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Color sensor
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Please be positive and constructive with your questions and comments.

Color sensor

by filet-o-freak on Sun Feb 22, 2009 12:54 am

I have an Arduino kit and would like to get some input from a color sensor to drive some RGB LEDs. I need the sensor to be able to pick up the color of an object, around the size of a shirt, within a 1 to 10 feet range. It does not need to be precise, I just need a general idea of the color that is passing by. I need help finding the sensor, I should be able to figure out how to do the rest. Any help for a novice is greatly appreciated.
Thanks !
Last edited by filet-o-freak on Sun Feb 22, 2009 4:13 am, edited 1 time in total.
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Re: Color sensor

by Amberwolf on Sun Feb 22, 2009 3:22 am

I think you might get by with a lens picking up the light from the shirt and sending it to a set of three simple photoresistors or phototransistors (like an Ambient Light Sensor module), each with it's own Red, Green or Blue filter over it, then creating either a formula or a lookup table in software to measure what color is being sensed based on the amount of light each one picks up.

Using a CCD would probably be even better results, but I don't know how much more complicated the hardware would be for that.
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Re: Color sensor

by oPossum on Sun Feb 22, 2009 8:13 am

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Please be positive and constructive with your questions and comments.