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Sensors/detection system help

Discussion in 'Beginner Electronics' started by Craig Lefort, Aug 12, 2005.

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  1. Craig Lefort

    Craig Lefort Guest

    I am looking for some help in designing a very simple passive measurement
    sensor system. Basically, I'd like to have some type of sensor (?) that
    would be able to count the number of a specific object in a certain area and
    output that number to some display. These objects could just have some
    passive element that the sensor could detect, or give off some signal to
    detect. For example, lets say there are 10 marbles on a table, 5 green and 5
    blue marbles. I want some sensor to be able to tell me the number of green
    marbles and the number of blue marbles in a given small area of the table
    (i.e. some of the marbles might be out of this given area) and display it
    electronically. Could anyone suggest or point me in the direction in the
    kind of system I'd need to set up. Should something be attached or embedded
    in the marbles that can be detected?

    Thanks in advance for any advice!

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