Output
Passive piezo buzzer
Plays tones with the tone() function — from gentle chirps to full alarms.
Pinout
- SIGpwm
- GNDground
Bench notes
Passive buzzers need tone(); active ones just want HIGH. This design assumes passive.
- Typical price
- $0.60
- Libraries
- none needed
- Prompt keywords
- buzzer, beep, alarm, sound