Passive Buzzer Module

Passive Buzzer Module 3.3V/5V for Microcontroller Projects

The Passive Buzzer Module from Anu Electronics adds programmable sound to Arduino, ESP32, Raspberry Pi, STM32 and NodeMCU projects. It supports 3.3V and 5V systems and requires an external PWM or frequency signal to produce sound. Use it to create beeps, melodies, alerts and sound effects controlled by your project code.

Key Features

• Programmable tones: Change the input signal frequency to create different pitches and simple melodies.
• 3.3V/5V operation: Suitable for projects using either of these supply voltages.
• Compact module: Easy to incorporate into electronics prototypes and embedded system projects.
• Flexible sound patterns: Program short notification beeps, repeating alarms or audible feedback for user inputs.

Product Specifications

Project Applications

• Audible alerts for DIY electronics and IoT devices
• Status notifications and feedback in robotics projects
• Alarm sounds for automation and security prototypes
• Melody generators and educational experiments with frequency and sound

Using the Module

Check the module's pin markings before wiring, use the appropriate 3.3V or 5V supply, and configure your controller to generate a repeating tone signal. Confirm your board's logic levels and output current limits before connecting it. Change the signal frequency for pitch and the duration for beep length.

Frequently Asked Questions

What is the difference between a passive and an active buzzer?

A passive buzzer needs an external oscillating signal to produce a tone, allowing the controller to vary the pitch. An active buzzer has an internal oscillator and typically produces a fixed tone when powered.

Will this passive buzzer sound with DC power alone?

It requires an external PWM or frequency signal to produce a continuous tone. Simply applying steady DC power does not generate a continuous tone.

Can I use this buzzer module with Arduino or ESP32?

Yes. The module supports 3.3V and 5V systems and can be used with Arduino or ESP32 when connected appropriately and driven with a suitable tone signal.

Can this module play different notes?

Yes. Vary the signal frequency to generate different notes, then control their timing in your code to create simple melodies or distinct alert patterns.