It is nothing but an Arduino Library, which produces square-wave of a specified frequency (and 50% duty cycle) on any Arduino pin. The nice thing comes from combining sounds with input from the user, for example you can create a little keyboard with toy sounds.In this chapter, we will use the Arduino Tone Library. Using multiple buzzers you can also create melodies with multiple notes. Using tone() we can play a frequency on the buzzer pin, for a specified duration.Įxample: int duration = 500 void setup () You can generate a sound like you did previously for the passive buzzer, with digitalWrite(), and it will work fine.īut the Arduino language gives us another function that’s perfect to work with a passive buzzer: tone(). Then connect the - wire to GND on the Arduino, and the + wire to a digital output pin, in this case I picked pin #8: The buzzer has a + pole, I used the red wire for that (a good habit).

Like we did for the active buzzer example, connect the buzzer to a wire, and then to the Arduino. In this project we’re going to use the Arduino to generate a sound using a passive buzzer.

Arduino piezo no sound