Sensor-Buzzer
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The product number of Sensor-Buzzer is: MSDO11 Sensor-Buzzer is a passive buzzer. Like a magnetic speaker, it needs voltage with different frequency so that it can make sound accordingly. The pitch becomes louder when the frequency gets higher. ContentsIntroduction of Pins
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Application
#define buzzer_pin 6
void setup()
{
pinMode(buzzer_pin,OUTPUT);
}
void loop()
{
for(int i=200;i<=800;i++) //Increase the frequency from 200HZ to 800HZ circularly.
{
tone(buzzer_pin,i); //Output frequency in the port.
delay(5); //The frequency lasts for 5ms.
}
delay(1000); //The highest frequency lasts for 1s.
for(int i=800;i>=200;i--)
{
tone(buzzer_pin,i);
delay(10); //The frequency lasts 10ms.
}
}
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