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  • NOT a buzzer

    posted by clough42 on 03/05/2013
    1

    Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month

    Pros:

    This is an amplified piezoelectric speaker. It uses a transistor to amplify a logic-level signal and drive the piezo unit.

    Cons:

    This is not a buzzer. You must provide a waveform on the S pin to get a tone out of the speaker. There is no built-in tone driver.

    OtherThoughts:

    When you pull the S pin low, the speaker emits a single click. You must provide a square wave to get a tone out of it.

    Bottomline:

    This seems to be a decent little amplified piezo speaker, but it is most definitely not a buzzer, as advertised. I bought it for my son to use in his arduino projects, and it works fine for that application.

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