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Thread: Ultrasonic transmitter/receiver pin clarification

  1. #1

    Default Ultrasonic transmitter/receiver pin clarification

    Hi,

    We bought the below ultrasonic transmitters/receivers
    http://www.hobbyengineering.com/H1324.html

    I have a basic doubt about the pins.

    The transmitter has 2 pins. The place one pin connects to the sensor has a bulge so as to differentiate the two pins. Now what is the functionality of the pins, I don't know. I assume one is for GROUND, one is for +VE. Is this correct. Also what does the bulged pin represent ?

    Also we don't know how to interface the ultrasonic transmitter/receivers to micro controller board. Especially how to convert the 5V pulse generated by microcontroller to 20V pulse to be fed to the transmitter ?
    Do we use a amplifier/op-amp circuit to amplify the 5V pulse to 20V ?

    Anybody know about and used ultrasonic transmitter/receivers, please clarify our doubts.

    Thanks

  2. #2
    Senior Member T-1000
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    Default

    you cannot directly interface the TX or RX modules. You need to drive the TX by a switch or something, and use an amp/filter combination to receive it. There is a more detailed post about this posted some time back. browse back the forums, its all there.
    .... I didnt do it ! ....

  3. #3
    Senior Member T-1000
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    .... I didnt do it ! ....

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