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Electronics How To: Color Sensor

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Uploaded by on Aug 11, 2010

Blog entry for this project: http://blog.dr-ivan.com/2010/08/11/color-sensor-with-arduino/
My homepage: http://www.dr-ivan.com

In this video I will talk briefly about how to make a simple color sensor with 3 LEDs and a photoresistor

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  • Nice video! :) Very clearly explained.

    I made one of these a year or so ago using the same concepts. I used an RGB LED rather than 3 separate LEDs, and I used a lower resistance value for the green die's current-limiting resistor to compensate for the lower output.

  • excellent friend, just now i'm building my own color sensor for a little project of the university in programable devices. Kind regards from Mexico .

  • @deshapoui Glad I could help ;) - Dr. Ivan

  • @IvanTheMD Thank you for the quick reply. I will be trying your tips as soon as possible.

  • @deshapoui Thanks:) An interesting question! Try a setup with 3 photoresistors. Put a color filter in front of each one - red, green & blue. This may or may not work - depending on ambient lighting conditions. If you wish more accurate and foolproof setup, use a cheapo VGA camera at lowest resolution. Perhaps you might be able to analyze the data stream on the fly (Arduino doesn't have enough memory to store an entire frame). Failing that, use an SD card for temporary storage. Cheers! - Dr. Ivan

  • nice video man. how can i make (or where to get) a long range color sensor? one that detects a preset color in an environment in about 0.5 m range

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