ESP8266_KY-012_Active_buzzer_module

The active buzzer ( KY-012 ) continuously makes sound and only needs power to function.
I already had tested this buzzer module with my Arduino.

Testing buzzer direct connecting to power  ( 3.3 V )

• module Pin  -    VCC
• Pin (middel) not connected
• module Pin S     GND

Module gives sound, volume low !!

With ESP8266Basic program :

• Pin - ESP output pin
• Pin (middel) not connected
• Pin S ESP8266 Ground 

Using the ESP8266Basic program below

 [Pin Buzzer High] button switches my buzzer on.

 [Pin Buzzer Low] button switches my buzzer off.

' TestKY012_Buzzer.bas

' 2016 J.Jeronimus

cls

PinBuz = 5

html | <h1>Testing Active buzzer KY-012</h1> |

html | Connected to pin | &  PinBuz & | <br><br> |

button "Set Pin Buzzer High", [SetPinBuzHigh] 

html | <br><br> |

button "Set Pin Buzzer Low", [SetPinBuzLow] 

html | <br><br> |

button " Exit", [Exit] 

html | <br> |

wait 

[SetPinBuzLow] 

io(po,PinBuz,0) 

wait 

[SetPinBuzHigh] 

io(po,PinBuz,1) 

wait 

[Exit] 

end

Alternatively you can connect

• Pin - ESP VCC ( 3V3 )
• Pin (middel) not connected
• Pin S ESP8266 output pin 5 

Using the same ESP8266Basic program

 [Pin Buzzer High] button switches buzzer off.

 [Pin Buzzer Low] button switches buzzer on.