Sound Detection Sensor Module
Sound Detection Sensor Module – Audio-Based Trigger for Arduino & IoT Projects
The Sound Detection Sensor Module detects ambient sound or claps and converts it into a digital signal, making it ideal for interactive electronics and smart automation. It’s widely used in voice-activated lights, alarms, DIY robotics, and Arduino-based projects.
Compact and easy to interface with microcontrollers, this module responds to sound intensity and delivers digital or analog output depending on the model.
🔧 Key Features
Detects sound from sources like claps, knocks, or speech
Outputs a digital HIGH signal when sound threshold is exceeded
Adjustable sensitivity via onboard potentiometer
Compatible with Arduino, ESP32, Raspberry Pi, and other platforms
Onboard power and signal LEDs for status indication
Compact size for easy integration into enclosures and projects
📊 Technical Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 3.3V – 5V DC |
| Output Type | Digital (HIGH/LOW) |
| Microphone Type | Electret Condenser Mic |
| Sensitivity Control | Adjustable Potentiometer |
| Output Indicator | LED (lights when triggered) |
| Dimensions | ~32mm x 17mm |
🧪 Applications
Clap switches
Sound-reactive lights
Voice-activated alarms
DIY music visualizers
IoT noise monitoring
Audio event triggers in smart systems
🔌 Wiring with Arduino (Basic)
| Sensor Pin | Arduino Pin |
|---|---|
| VCC | 5V |
| GND | GND |
| OUT | D2 (or any digital pin) |
Use digitalRead() to monitor signal changes based on sound input.