Adafruit
Piezo Buzzer [PS1240]
The PS1240 is a compact piezo buzzer for generating beeps, tones, and alerts in electronic projects. Drive it with a 3–30 V peak-to-peak square wave from a t...
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The PS1240 is a compact piezo buzzer for generating beeps, tones, and alerts in electronic projects. Drive it with a 3–30 V peak-to-peak square wave from a timer or microcontroller. It produces its loudest output around 4 kHz but works well across the 2–10 kHz range.
For extra volume, use differential drive by connecting both pins to microcontroller outputs and alternating which pin is high — this doubles the effective drive voltage.
Key Features
- Wide Voltage Range – 3–30 V peak-to-peak square wave input
- Loudest at 4 kHz – Effective across 2–10 kHz frequency range
- Simple Wiring – Connect one pin to ground, the other to a square wave output
- Differential Drive Option – Double volume by driving both pins from a microcontroller
- Compact Size – Small form factor for embedded projects
Package Contents
- 1× PS1240 Piezo Buzzer
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
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