Active Buzzer Alarm Module Sensor Beep for arduino smart car NEW

$0.52 (-40%)

798

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  • Item must be returned within: 14 Days
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  • Condition: New
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    • Active Buzzer Alarm Module Sensor Beep for arduino smart car NEW
    There are many people active and passive buzzer buzzer concept is not very clear, here to do a brief introduction, we want to be helpful for future use.
    Note that the “source” does not mean power. But rather refers to the shock source.
    Passive buzzer is characterized by:
    A passive internal sources without shocks, so if the DC signal can not make it with a tweet. Must 2K ~ 5K square wave to drive it
    2 sound frequency controllable, you can make a “more than a meter hair Suola Xi” effect.
    3 In some special cases, you can reuse a control and LED mouth
    Active buzzer is characterized by:
    An active internal buzzer with shock source, so long as a power will be called
    2 program easy to control, SCM can allow a high and low sounds, while passive buzzer can not.
    One module description
    A module using 9012 transistor drive
    2 Operating voltage 3.3V-5V
    6 with fixed bolt hole for easy installation
    7 small plates PCB size: 3.3cm * 1.3cm
    Two module interface specification (3-wire)
    1 VCC external 3.3V-5V voltage (5v microcontroller and can be directly connected to 3.3v MCU)
    External GND 2 GND
    3 I / O external microcontroller IO port
    Package Included:
    1PCS*An active buzzer module shown in a (test)
    3PCS*20cm DuPont line
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