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Colour sensing module

Discussion in 'General Electronics Discussion' started by DIJO PAUL, Jun 22, 2013.

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  1. DIJO PAUL

    DIJO PAUL

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    Jun 22, 2013
    Is there any idea to detect colours?
    I am on the way in designing such a module, please share your opinions.
     
  2. davenn

    davenn Moderator

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    Sep 5, 2009
    a digital camera and appropriate software

    Dave
     
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    Light sensors and filters
     
  4. gorgon

    gorgon

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    Jun 6, 2011
    As Steve say, the simplest way to go is RGB filters and 3 optical sensors. This together with some processing algorithms in a microcontroller should make a decent colour analyzer.
     
  5. GonzoEngineer

    GonzoEngineer

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    Dec 2, 2011
    Google "Spectrophotometers"
     
  6. Raven Luni

    Raven Luni

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    Oct 15, 2011
  7. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Yes, I was thinking of them too. Essentially a 1 pixel colour camera :)
     
  8. NuLED

    NuLED

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    Jan 7, 2012
    I would assume from these descriptions that, using RGB filters, the detector will figure out the magnitude of each primary color (voltage level of the photo detector?), and then use an algorithm to calculate the color that had these RGB values.
     
  9. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Well, probably your code inside a uC or whatever will determine the colour.

    The question is, what do you want to do? It may just be a case of determining a certain broad range of values which represent a target value, or it may be much more complex.
     
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