M5Stack Microphone Unit (LM393)

The M5Stack Microphone Unit is an omnidirectional sound sensor with MAX4466 amplification and adjustable analogue/digital output, ideal for sound detection, audio monitoring, and sound-activated control projects.

The M5Stack Microphone Unit is a sound sensor equipped with an omnidirectional electret microphone.

The signal is amplified and output through the MAX4466 microphone preamplifier. This amplifier effectively suppresses power supply noise and common-mode noise, providing high-fidelity sound output, making it suitable for use in noisy environments.

This unit can output both analogue and digital signals. It includes a built-in LM393 dual voltage comparator, allowing the comparison voltage threshold to be set by adjusting a 10K potentiometer. This sensor is ideal for projects involving sound-to-electricity conversion and sound-activated switches.

Features

• Sound sampling/audio recording
• Built-in MAX4466 microphone preamplifier
• Omnidirectional, 52dB sensitivity
• Analogue and digital signal output
• Built-in voltage comparator and adjustable potentiometer for threshold setting
• Development platforms: Arduino, UIFlow (Blockly, Python)
• HY2.0-4P interface
• 2x LEGO-compatible holes

Specifications

Microphone sensitivity/Signal-to-noise ratio	52dB/40dB
Output signal	Analogue/Digital
Input voltage	5V
Product Size	32.0 x 24.0 x 8.0mm
Product Weight	4.6g

Resources

• Product documentation

Package Contents

• 1x Unit MIC
• 1x HY2.0-4P Grove cable (20cm)