Passive Buzzer Module for Arduino – 3.3V-5V Tone Generator
₹29.50 incl. GST (₹25.00 + GST)
Passive Buzzer Module – Low Level Trigger
Product Description
The Passive Buzzer Module is a compact sound-output module designed for Arduino, ESP32, ESP8266, Raspberry Pi, and other microcontroller projects. Unlike an active buzzer, it requires a PWM or square-wave signal to generate sound, allowing users to create different tones, melodies, and alarm patterns.
The module uses a Low Level Trigger design, meaning the buzzer is activated when the signal pin is pulled LOW. Its simple 3-wire interface and standard 2.54mm pin spacing make it easy to integrate into breadboards and electronic projects.
Variable Tone Generation
Because this is a passive buzzer, the sound frequency can be controlled through PWM signals. It can produce tones in the approximate 1.5kHz–2.5kHz range, making it suitable for melodies, warning tones, status indicators, and custom sound effects.
Low Level Trigger
The buzzer operates using Active LOW logic. When the signal input is LOW, the module activates and produces sound. When the signal is HIGH, the buzzer remains inactive.
This simple trigger method allows easy connection to digital control circuits and microcontrollers.
Key Features
- Passive buzzer design
- Requires PWM or square-wave signal
- Adjustable tone generation
- Low Level Trigger operation
- 3.3V–5V DC compatible
- 1.5kHz–2.5kHz tone range
- Standard 2.54mm pin pitch
- Compact PCB design
- 3-wire interface
- Onboard transistor driver
- Mounting hole for secure installation
- Compatible with Arduino, ESP32, and ESP8266
Technical Specifications
| Feature | Specification |
|---|---|
| Module Type | Passive Buzzer |
| Operating Voltage | 3.3V – 5V DC |
| Trigger Logic | Low Level Trigger / Active LOW |
| Tone Range | 1.5kHz – 2.5kHz |
| PCB Dimensions | Approx. 33mm × 13mm |
| Pin Pitch | 2.54mm |
| Transistor Drive | S8550 or 9012 |
| Interface | 3-Wire: VCC, GND, I/O |
Working Principle
A passive buzzer does not contain the circuitry required to generate a tone automatically from DC power. Instead, it requires an alternating square-wave or PWM signal.
The microcontroller generates a signal at the desired frequency, and the module’s transistor driver controls the buzzer to produce the corresponding audible tone. By changing the PWM frequency, different tones and melodies can be created.
Interface
The module provides three connections:
- VCC: Power supply
- GND: Ground
- I/O: Low-level trigger/PWM signal
Typical Application Scenarios
Melody Maker
Use PWM signals from Arduino or ESP32 to create melodies, tunes, and custom sound effects.
Audible Alarms
Suitable for warning signals, fault alerts, and status notifications.
Game Projects
Can generate button sounds, game-over effects, and other interactive audio feedback.
Smart Home
Useful for doorbells, appliance notifications, and status alerts.
Electronics Projects
Suitable for adding simple audio feedback to DIY circuits, robots, and embedded systems.
Applications
- Arduino projects
- ESP32 projects
- ESP8266 projects
- Raspberry Pi projects
- Melody generators
- Alarm systems
- Warning indicators
- Smart doorbells
- Game consoles
- Robotics
- DIY electronics
- Appliance status indicators
- Interactive projects
- Educational electronics
Package Includes
- 1 × Passive Buzzer Module – Low Level Trigger
Product Disclaimer
Product information provided on our website may not be entirely accurate as specifications can vary between manufacturers, suppliers, and production batches. Please verify the actual product specifications before using the module in critical applications.
Product images are for illustrative purposes only and may differ from the actual product in colour, component placement, or other visual details.
Important Note
Passive Buzzer Operation
This is a passive buzzer, so it will not continuously produce sound when connected directly to DC power. A PWM or square-wave signal must be supplied to the input to generate an audible tone.
Trigger Logic
The module uses Active LOW triggering. Pulling the signal pin LOW activates the buzzer, while a HIGH signal turns it off.
Power Supply
The module supports 3.3V–5V DC operation. Ensure the correct voltage and wiring are used when connecting it to a microcontroller.
Recommended Related Products
Explore relevant alternatives and complementary products selected from the full Robosap catalogue.
Frequently Asked Questions
1. What is a passive buzzer?
A passive buzzer requires an external PWM or square-wave signal to generate sound. Unlike an active buzzer, it does not produce a fixed tone simply by applying DC power.
2. What voltage does the module use?
The module operates from 3.3V to 5V DC.
3. What is the trigger logic?
It uses Low Level Trigger / Active LOW logic.
4. Can I control the tone with Arduino?
Yes. Arduino can generate PWM signals to control the buzzer's tone and frequency.
5. Can I use it with ESP32?
Yes. The module is compatible with ESP32 PWM output.
6. Can it play melodies?
Yes. By changing the PWM frequency and timing, you can generate different tones and melodies.
7. Will the buzzer make sound if connected directly to DC power?
No. As a passive buzzer, it requires a PWM or square-wave signal to produce sound.
8. What is the approximate tone range?
The specified tone range is approximately 1.5kHz to 2.5kHz.
9. What are the module connections?
The module uses VCC, GND, and I/O connections.
10. What is included in the package?
The package includes 1 × Passive Buzzer Module with Low Level Trigger.Only logged in customers who have purchased this product may leave a review.
Reviews
There are no reviews yet