What it is and how it works
The kit includes one passive buzzer. It needs a changing electrical signal to produce a continuous tone. Unlike an active buzzer, it has no built-in oscillator setting the tone. Software can choose the pulse frequency and therefore change the sound's pitch.
PWM or a suitable tone-generation function creates simple sound patterns. Software also determines note duration and pauses. This is not a speaker intended for high-quality speech or music reproduction. A black case alone does not establish the kit part's internal technology, required voltage or current consumption.
What we can use it for
- Play a short melody when an exercise finishes successfully.
- Make a simple instrument with buttons selecting different notes.
- Represent potentiometer position through changes in pitch.
First exercise
After checking electrical requirements and selecting a suitable driver, program two short tones at different frequencies with a pause between them. Then keep frequency constant and change duration only. This separates pitch from the length of the sound. Provide a simple way to stop playback during the exercise.
Handling notes
Do not assume direct GPIO drive is suitable. Check current demand and use a transistor driver when required, with protection appropriate to the load. Respect polarity markings and operating voltage. The photograph does not establish whether the buzzer is piezoelectric or magnetic. Test briefly, away from ears.
Background: Adafruit — Using Piezo Buzzers. Their component does not establish this buzzer's ratings.