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Small green rectangular PCB with silver microphone capsule and white Grove connector

Seeed Studio

Seeed Studio Grove Sound Sensor LM358

SKU CH-TMT0-WBZ2Z

Analog microphone module with LM358 amplifier, Grove plug-and-play socket, and 4 V–12 V supply range for Arduino or Raspberry Pi sound detection

  • TypeSensors
  • LM358 dual amplifier operates from -40°C to 85°C for reliable performance
  • Wide 4 V to 12 V supply range suits many microcontroller boards
  • Analog output connects directly to logic modules without extra circuitry
  • Grove unified socket enables plug-and-play integration with compatible shields
  • Microphone covers 16 kHz to 20 kHz frequency range for clear sound capture

Grove Sound Sensor LM358 Module

The Seeed Studio Grove Sound Sensor is a compact microphone module built around an LM358 operational amplifier. It detects ambient sound levels such as claps or background noise and outputs an analog voltage proportional to the sound strength. The board uses a standard Grove socket for solderless connection to Arduino, Raspberry Pi and other microcontroller platforms. It operates from a 4 V to 12 V supply and draws only 4 to 5 mA at 5 V.

Suitable for analog sound detection only

This module suits hobbyists and students adding basic sound-triggered functions such as clap-activated lights or noise-level logging to a Grove-based project. Its analog output requires an ADC input on the host controller. Builders who need digital threshold interrupts, frequency analysis, directional pickup or MEMS-level sensitivity should consider a different sensor.

LM358 amplifier with 26 dB voltage gain

The onboard LM358 dual amplifier provides a fixed voltage gain of 26 dB at 1 kHz with a 6 V supply. The electret microphone covers 16 kHz to 20 kHz with a sensitivity of 52 to 48 dB and a signal-to-noise ratio of 54 dB. These figures determine the detectable sound pressure range and the minimum ADC resolution required for reliable readings.

Highlights

  • LM358 dual amplifier operates from -40°C to 85°C for reliable performance
  • Wide 4 V to 12 V supply range suits many microcontroller boards
  • Analog output connects directly to logic modules without extra circuitry
  • Grove unified socket enables plug-and-play integration with compatible shields
  • Microphone covers 16 kHz to 20 kHz frequency range for clear sound capture

Specifications

TypeSensors

Questions about this item

How do I connect the Grove Sound Sensor to an Arduino and which step is often missed?

Plug the 4-pin Grove cable into the sensor's unified socket and an Arduino Grove shield; the step often missed is powering the shield from a 4 V–12 V source so the LM358 amplifier receives its required supply range

What maintenance or replacement will the sensor need over time?

The electret microphone capsule can drift in sensitivity or fail after prolonged exposure to humidity or dust; no user-serviceable parts exist, so the whole module is replaced when output becomes unreliable

What limit appears first during continuous sound-level monitoring?

The LM358's 1.2 MHz gain-bandwidth product and 26 dB voltage gain restrict the usable frequency response to the microphone's 16–20 kHz range, so sustained high-frequency content hits the amplifier's bandwidth ceiling first

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