Passive/Active Buzzer Module with High/Low Level Trigger [EOL]

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:

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)