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Arduino Sound Detector Sound Sensor Module
The Sound Detector Sensor Module is a compact, easy-to-use microphone-based sensor designed for use with Arduino, Raspberry Pi, and other microcontroller platforms. It detects ambient sound levels and outputs both a digital signal (sound detected / not detected) and an analog signal proportional to the sound intensity.
Key Features
- Dual output: Digital (DO) and Analog (AO) signal outputs
- On-board sensitivity potentiometer for threshold adjustment
- Built-in LM393 comparator for stable digital output
- Power indicator LED and signal indicator LED
- Wide operating voltage: 3.3V – 5V (compatible with 3.3V and 5V MCUs)
- Compact PCB form factor — easy to mount in projects
Typical Applications
- Clap or sound-triggered switches
- Voice-activated lighting or relay control
- Noise level monitoring
- Sound-reactive LED projects
- Security and alert systems
Pin Description
- VCC – 3.3V to 5V power supply
- GND – Ground
- DO – Digital output (HIGH/LOW based on threshold)
- AO – Analog output (variable voltage proportional to sound level)
Compatible with Arduino Uno, Nano, Mega, ESP32, ESP8266, STM32, and other popular development boards. No soldering required — plug directly into a breadboard or use with jumper wires.