color sensor
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color sensor

 
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jane



Joined: 17 Dec 2006
Posts: 2
Location: bacolod city
Posted: Sun Dec 17, 2006 12:37 pm    Post subject: color sensor Reply with quote
Smile good day... Smile

i have this project that needs to determine the color of a paper... what sensor could you suggest that i could use in this said project... the paper is not so thin and cnt be easily reflected by a light... Crying or Very sad

can i use LED's...? but how could i use this LED... Question Question Question

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neon



Joined: 25 Feb 2006
Posts: 594
Posted: Mon Dec 18, 2006 1:02 am    Post subject: Reply with quote
mabuhai LEDS are sources of light or emitters. you need i believe a photocels that detect light. for the color detetection you may use an LED [color] as a source for detection . i have never try it so i guess i am guessing so far. check back some other menber of the forum might help you with your problem.
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jane



Joined: 17 Dec 2006
Posts: 2
Location: bacolod city
Posted: Tue Dec 19, 2006 3:04 pm    Post subject: stiil thnk'n Reply with quote
how could i use this LED's...???


thankz for the reply anyway.... Crying or Very sad Crying or Very sad Crying or Very sad

i hope someone knows... Sad Sad Sad

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neon



Joined: 25 Feb 2006
Posts: 594
Posted: Fri Jun 01, 2007 2:12 pm    Post subject: Reply with quote
color is defined as RGB RED BLUE GREEN basicaly magenta and there is black no color. by experimenting with leds and photo cells you could detect the color spectrum actualy most of motion detectors now days are photocells adjusted to detect light veriations.give it a try
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ronsimpson



Joined: 30 Apr 2007
Posts: 11
Posted: Fri Jun 01, 2007 3:08 pm    Post subject: Color of paper Reply with quote
“Color of paper” Last time I used this sensor: http://www.taosinc.com/images/product/document/TCS230-E24.pdf
If you want a color sensor that is USB and serial, I may have some loft over blank PCBs from an old project. Use white LEDs to light the paper and the TCS230 to read back the RGB color, then if you need to know the color temperature there are some formulas to get there from RGB. ron@gradllc.com
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