DIY Sound Detection Sensor Module for Arduino

Sound Detection Sensor Module for Arduino

The Sound Detection Sensor Module is a compact and easy-to-use sound sensing device designed for Arduino, ESP32, Raspberry Pi, and other microcontroller-based projects. It detects sound levels in the surrounding environment and provides a digital output signal when the detected sound exceeds a user-defined threshold.

The module uses a high-sensitivity microphone to capture sound waves and an LM393 comparator IC to process the signal. The detection threshold can be adjusted using the onboard potentiometer, allowing the sensor to respond to different sound levels. An onboard LED indicator provides visual feedback when sound is detected.

This module is ideal for intelligent vehicles, sound-activated systems, security alarms, automation projects, and educational electronics applications.

Key Features

• High-sensitivity microphone for sound detection
• Adjustable sound threshold using onboard potentiometer
• Digital output signal (HIGH/LOW)
• LM393 comparator for reliable signal processing
• Onboard LED indication for sound detection
• Low power consumption
• Compatible with Arduino, ESP32, Raspberry Pi, and other microcontrollers
• Compact and easy-to-integrate design

Technical Specifications

• Operating Voltage: 3.3V – 5V DC
• Output Type: Digital Signal (HIGH/LOW)
• Operating Current (5V): 4–8mA
• Microphone Sensitivity: 48–52dB @ 1kHz
• Microphone Impedance: 2.2kΩ
• Frequency Response: 16Hz – 20kHz
• Signal-to-Noise Ratio (SNR): 54dB
• Output Channels: Single Digital Output
• Indicator LED: Yes
• Threshold Adjustment: Onboard Potentiometer

Applications

• Sound-activated switches
• Intelligent vehicle projects
• Security and alarm systems
• Voice-triggered automation
• Noise monitoring systems
• DIY electronics and educational projects

Package Includes

• 1 × Sound Detection Sensor Module