Author Topic: blue or red ?  (Read 1152 times)

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Offline rabochidTopic starter

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blue or red ?
« on: November 01, 2010, 06:03:06 AM »
hi I'm trying to make the difference between  two colors red and blue without using a color sensor
can any one help me plz?

Offline aruna1

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Re: blue or red ?
« Reply #1 on: November 01, 2010, 07:39:28 AM »
hi I assume you mean colour sensor modules.(ready made ones)

well you can make a simple colour sensor by using a red led,blue led and a LDR.
search for CDS colour sensor circuit

here is link from this site
http://www.societyofrobots.com/sensors_color.shtml :)

I have tried this and it works perfectly.
best results can achieve by pointing LED colour spot directly below LDR.
I'm Me

Offline Soeren

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Re: blue or red ?
« Reply #2 on: November 03, 2010, 09:50:02 AM »
Hi,

hi I'm trying to make the difference between  two colors red and blue without using a color sensor
If you use two LDRs (or phototransistors) with a filter of each color (gel filter or just try some translucent ("clear") colored plastic), you should be able to differentiate them.
You may need to add some light, depending on whether the source of these colors are colored light itself, or just colored objects reflecting ambient light.
Regards,
Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
Please remember...
Engineering is based on numbers - not adjectives

 


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