Most of car alarms use coil and magnet on spring, signal from coil is goes to comparator, output to monostable.
This way you can set trigger level, and you can define duration of output signal.
In stand of coil, magnet and spring you can use piezo.
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Re: Tilt/Vibration Sensor
Most of car alarms use coil and magnet on spring, signal from coil is goes to comparator, output to monostable.
This way you can set trigger level, and you can define duration of output signal.
In stand of coil, magnet and spring you can use piezo.
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