SKU: SENS-3152
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Generic Analog Sound Sensor Microphone Module for Arduino

₹104.00 (Inclusive of all taxes)
Out of Stock

This analog sound sensor module provides a DC voltage output proportional to ambient sound intensity, featuring an onboard amplifier with adjustable gain. It is designed for easy integration with Arduino and other microcontroller ADCs for sound-activated projects and loudness measurement.

Features

  • Analog DC voltage output proportional to sound intensity
  • Onboard amplifier circuit with adjustable gain for sensitivity tuning
  • Built-in filter-rectifier for stable DC signal conditioning
  • 3-pin interface (VCC, GND, OUT) compatible with Arduino analog pins
  • Compact PCB design with 3mm mounting holes for secure installation

Out of stock

Description

This module integrates an electret microphone capsule with a signal conditioning circuit to convert acoustic pressure waves into a corresponding analog DC voltage. The onboard operational amplifier provides gain control, allowing the sensitivity to be tuned for different acoustic environments, from quiet rooms to noisy industrial settings.

The output is a conditioned DC signal centered around VCC/2, making it directly compatible with the analog-to-digital converters (ADCs) found on Arduino, ESP32, Raspberry Pi Pico, and other microcontrollers. The built-in filter-rectifier ensures a stable output, minimizing noise and providing a reliable signal for sound-triggered logic or sound level monitoring applications.

Key Features

  • Electret condenser microphone with wide frequency response
  • Adjustable gain potentiometer for precise sensitivity calibration
  • Signal conditioning with rectification and low-pass filtering
  • Standard 3-pin header (VCC, GND, Analog OUT) for quick connection
  • Operates on a wide 3.3V to 5V DC supply range
  • Compact and lightweight PCB with pre-drilled mounting holes
  • Output signal amplitude scales with supply voltage (VCC/2)
  • Ideal for prototyping sound-reactive and audio detection systems

Applications

  • Arduino-based sound-activated switches and clap detectors
  • DIY sound level meters and noise monitoring systems
  • Voice-activated home automation and interactive installations
  • Robotics for sound source localization or audio input
  • Educational projects for teaching analog sensor interfacing and ADC conversion

Technical Specifications

Output TypeAnalog Voltage (DC)
Output SignalAmplitude VCC/2
Supply Voltage3.3V - 5V DC
Interface3-pin (VCC, GND, OUT)
Onboard CircuitryAmplifier, Filter-Rectifier
Adjustable ParameterGain (via potentiometer)
Mounting Hole Diameter3 mm
Module Dimensions (LxWxH)Approx. 3 x 2 x 1 cm (PCB)

Frequently Asked Questions

What is the operating voltage range for this sound sensor module?

The module is designed to operate on a DC supply voltage between 3.3V and 5V. The output signal amplitude is centered at half the supply voltage (VCC/2), so using a 5V supply will provide a larger output swing compared to 3.3V.

How do I connect this module to an Arduino board?

Connect the module's VCC pin to Arduino's 5V (or 3.3V), GND to GND, and the analog OUT pin to any Arduino analog input pin (e.g., A0). The output is a DC voltage that can be read using the `analogRead()` function. The onboard potentiometer allows you to adjust the gain and sensitivity.

Can the sensitivity of the microphone be adjusted?

Yes, the module features a blue potentiometer for adjusting the gain of the onboard amplifier. Turning it clockwise increases sensitivity, making the module more responsive to quieter sounds. Calibrate it for your specific application and ambient noise level.

What is the output signal type and how is it processed?

The module outputs a conditioned analog DC voltage. The built-in circuit rectifies and filters the AC signal from the microphone, producing a stable DC level that rises with increasing sound intensity. This signal is ready for direct connection to a microcontroller's ADC pin without additional circuitry.

Package Includes

  • 1 x Analog Sound Sensor Microphone Module

Additional Information

Weight 0.006 kg
Dimensions 5 × 3 × 2 cm