This module provides a simple way to add sound to your projects. It's available in both active and passive configurations, offering flexibility for various applications. The module can be triggered by either a high or low-level signal, simplifying integration with microcontrollers and other digital systems.
Features
- Active or Passive Buzzer Options: Choose the version that best suits your needs.
- Active Buzzer: Contains an internal oscillator, producing a sound when power is applied.
- Passive Buzzer: Requires an external oscillating signal (2KHz - 5KHz) to produce sound. Can create different tones/sounds like "doremi".
- High/Low Level Trigger: Can be activated by either a high or low-level signal on the I/O pin.
- Wide Voltage Range: Operates from 3.3V to 5V, making it compatible with many microcontrollers.
- Easy to Install: Features a fixed screw hole for easy mounting.
- Compact Size: Small PCB dimensions of 32mm * 13mm.
- NPN Transistor Driver: Uses S8050 (active buzzer) or S8550 (passive buzzer) NPN transistor for efficient driving.
Active Buzzer vs. Passive Buzzer
Here's a breakdown of the key differences:
| Feature | Active Buzzer | Passive Buzzer |
|---|---|---|
| Internal Oscillator | Yes | No |
| Sound Generation | Produces sound when power is applied | Requires an external oscillating signal to produce sound |
| Tone Control | Single tone | Tone can be controlled by varying the frequency of the input signal |
| Driving Circuit | S8050 Transistor | S8550 Transistor |
| Trigger | High Level Trigger | Low Level Trigger |
Important Note: The "source" in "active source" refers to the oscillation source, not the power source.
Wiring Instructions
- VCC: Connect to a 3.3V - 5V power supply (can be directly connected to 5V/3.3V single-chip microcomputers).
- GND: Connect to Ground.
- I/O: Connect to the microcontroller I/O port.
- Active Buzzer: High-level trigger
- Passive Buzzer: Low-level trigger
Dimensions
- PCB Size: 32mm x 13mm
Applications
- Alarm devices
- Electronic doorbells
- Timers
- Educational projects
- Any application requiring audible feedback
Included
- 1 x Buzzer Module (Active or Passive - select option)