The netduino GO! Piezo Buzzer module has a single piezo buzzer. The buzzers tone is set using the call SetFrequency.
Here is a quick video
Christoc made to show what can be done with it and how:
Sample Code:
NetduinoGo.Potentiometer pot = new NetduinoGo.Potentiometer();
NetduinoGo.PiezoBuzzer buzzer = new NetduinoGo.PiezoBuzzer();
while (true)
{
buzzer.SetFrequency(pot.GetValue() * 2000);
}
Where to buy:
Driver: