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    nemnema's Avatar
    nemnema Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Apr 30, 2009, 11:54 AM
    Light sensor in garage
    Hello, I'm a student in the faculty of Engineering, and we have a project for making a garage door system:(a sensor at the door which sends to a parallel port using a signal conditioning circuit a signal when a car is entering, this signal goes to the PC... )
    All I want to know what type of light sensor should I use (it's a design project (just a case study))
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
    Ultra Member
    		  
    #2

    Apr 30, 2009, 12:55 PM

    If you can break a light beam with the car, use infrared (inexpensive, simple). If you can't, use RFID transmitters and sensors.
    sathe1963's Avatar
    sathe1963 Posts: 97, Reputation: 4
    Junior Member
    		  
    #3

    Apr 30, 2009, 09:14 PM
    Or else, you can use a proximity sensor... teknic uchenar make... with a relay to give input to your PC.
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