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Topic: Reading analog value from IR Receiver (Read 144 times) previous topic - next topic

teozfrank

Hi I currently bought a pair of these to make a IR barrier and I want to detect when it is broken.

http://www.ebay.ie/itm/5mm-IR-LED-Pair-Infrared-TX-RX-transmitter-receiver-Diode-x-2-Pair-/261666210619?

The problem is I cannot get a value from the IR Receiver has anyone any idea on how to hook this up? Here are the specs from the Ebay page.

Specifications:

    Transmitter (Tx):
        Power: 0.1W.
        Maximum Current (Approx): 0.5mA.
        Launch Angle (Approx): 45 Deg.
        Wavelength: 940nm.
        Typical forward voltage drop: 1.1V.
        Diameter: 5mm.

    Reciever (Rx):
        Power: 0.15W.
        Maximum Current (Approx): 30mA.
        Receiving Angle (Approx): 45 Deg.
        Wavelength: 940nm.
        Typical forward voltage drop: 1.2V.
        Diameter: 5mm.

Kind regards,
Frank.

Grumpy_Mike

Quote
The problem is I cannot get a value from the IR Receiver
Not surprising these are just the raw IR LED and IR diode, you need an amplifier of some sorts. Even then the distance will be limited to a few inches.

This project shows you how to hook up such a system:-
http://www.thebox.myzen.co.uk/Hardware/Sneak_Thief.html

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