M5Stack Microphone Unit (LM393)

M5StackSKU: RB-Mst-66
Manufacturer #: U096

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Sale price £3.89

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  • M5Stack Microphone Unit (LM393)
  • Offers two LEGO compatible holes
  • Built-in Omni-directional electret microphone
  • Provides digital output and analog signal
  • Features omnidirectional, 52dB sensitivity
  • Development platform: Arduino, UIFlow (Blocky, Python)

The M5Stack Microphone Unit (LM393) is a sound sensor with a built-in Omni-directional electret microphone. The signal is amplified and output by microphone preamplifier max4466.

The built-in LM393 double voltage comparator can set the comparison voltage threshold by adjusting 10K adjustable resistance. The sensor is very suitable for acoustic electrical conversion, audio recording/sampling, FFT acoustic feedback, voice switch, and other projects.


  • FFT Spectrum Display
  • Audio Sample/Record
  • Voice Switch
  • 1 x Microphone Unit
  • 1 x Grove Cable


  • 32 x 24 x 8 mm
  • Microphone sensitivity/SNR: 52dB/40dB
  • Output Signal: Analog/digital
  • HY2.0-4P interface
  • 2x LEGO compatible holes
  • Working Voltage: 3.3 V
  • Weight: 5 g

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