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conversion to colour sensor

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gaurav.p:
hey folks,

i am back after ages.i was working with a ir proximity sensor(digital sensor based on lm358) and i had a task to indentify blue colured objects in a place.so i intend to change the ir led with a blue led. is it a viable option?

here more information about the ir sensors
http://whackywhizzers.blogspot.com/2007/09/ir-sensors.html

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