32 lines
591 B
Arduino
32 lines
591 B
Arduino
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//www.elegoo.com
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//2016.12.08
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int buzzer = 12;//the pin of the active buzzer
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void setup()
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{
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pinMode(buzzer,OUTPUT);//initialize the buzzer pin as an output
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}
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void loop()
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{
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unsigned char i;
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while(1)
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{
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//output an frequency
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for(i=0;i<80;i++)
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{
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digitalWrite(buzzer,HIGH);
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delay(1);//wait for 1ms
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digitalWrite(buzzer,LOW);
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delay(1);//wait for 1ms
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}
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//output another frequency
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for(i=0;i<100;i++)
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{
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digitalWrite(buzzer,HIGH);
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delay(2);//wait for 2ms
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digitalWrite(buzzer,LOW);
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delay(2);//wait for 2ms
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}
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}
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}
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