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MEMS Microphone Module With Built-In Amplifier For Audio Detection And Sound Wave Analysis
The Fermion MEMS Microphone Module S15OT421 is a compact audio sensing breakout designed for sound detection, voice acquisition, and waveform analysis applications. Featuring a high-sensitivity MEMS microphone and an integrated amplifier with a gain of 66, the module converts acoustic signals into analog voltage outputs that can be easily sampled by microcontrollers through an ADC input. Its compact size and stable performance make it suitable for portable, embedded, and IoT-based audio projects.
When no sound is present, the module outputs a stable voltage of approximately 1.5V. As sound is detected, the output voltage varies according to the audio waveform, allowing developers to capture voice signals, monitor sound intensity, or perform basic audio analysis. Compatible with both 3.3V and 5V systems, the module can be directly connected to Arduino, ESP32, Raspberry Pi Pico, STM32, and other development platforms for sound-responsive applications.
Key Features

MEMS Microphone Sensor: Compact and highly reliable audio sensing technology.
Integrated Amplifier: Built-in gain of 66 for enhanced signal output.
Analog Audio Output: Generates a voltage proportional to the detected sound.
Stable Idle Output: Approximately 1.5V output when no sound is present.
Waveform Capture Capability: Suitable for ADC-based audio sampling.
High Sensitivity: Detects speech and environmental sounds effectively.
3.3V and 5V Compatible: Works with a wide range of microcontroller platforms.
Compact Breakout Design: Easy integration into embedded projects.
Low Power Operation: Suitable for portable applications.
Real-Time Audio Detection: Fast response to sound changes.
Microcontroller Friendly Interface: Simple analog signal output.
Easy Prototyping: Ideal for educational and development projects.

Applications

Sound detection systems
Voice-activated projects
Audio waveform acquisition
Noise monitoring devices
Smart home automation
Sound-responsive lighting
Environmental sound monitoring
Robotics projects
IoT audio sensing systems
Speech detection applications
Educational electronics projects
Embedded audio systems

MEMS Microphone Module – S15OT421 Connection

Package Contents

Fermion: MEMS Microphone Module x1

2.54-3P Black Single Row Pin Header x1