DX  » Community » Reviews » DIY Active Buzzer Alarm Module for Arduino (Works with Official Arduino Boards)
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    • Overall Rating: 4
    • Price: 5
    • Quality: 4
    • Ease Of Use: 4
    • Usefulness: 4
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    NOT a buzzer

    posted by clough42 on 03/05/2013 Certified Owner

    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 dr...
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