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Green rectangular HAT board with two microphones, three RGB LEDs, a button, two Grove ports, 3.5mm jack and JST 2.0 speaker connector

Bazarc

Bazarc ReSpeaker 2-Mics Hat passive component

SKU CH-7NK8-JRXPG

Dual-microphone expansion board for Raspberry Pi voice applications with onboard audio codec and Grove interfaces

  • TypeOther
  • Dual microphones capture voice from up to 3 metres
  • WM8960 low-power stereo codec handles audio processing on-board
  • Two Grove interfaces add GPIO and I²C expansion options
  • Three APA102 RGB LEDs plus one user button for visual feedback and control
  • 5 mm jack and JST 2.0 speaker output give flexible audio playback

Dual-Microphone HAT for Raspberry Pi

The ReSpeaker 2-Mics HAT is a passive expansion board that adds dual-microphone capture to Raspberry Pi 4 Model B, 3B+, 3B, 2B, 1B+ and Zero. It uses the WM8960 stereo codec and includes two microphones positioned on opposite sides of the board for far-field pickup up to 3 metres. Three APA102 RGB LEDs, one user button and two Grove interfaces for GPIO and I2C expansion are also provided. Audio output is available through a 3.5 mm jack or a JST 2.0 speaker connector.

Makers adding voice control to Pi projects

This board suits developers building smart speakers, voice assistants or audio sensors that integrate Alexa Voice Service, Google Assistant or custom wake-word engines. The dual-mic array and on-board codec simplify far-field capture without external DSP hardware. Builders who need more than two microphones, higher channel counts or a different form factor should look at alternative audio HATs or USB microphone arrays.

Two channels with far-field reach

The dual-microphone array comfortably handles near-field commands and far-field speech up to 3 metres in quiet to moderate noise. Two Grove ports give headroom for adding sensors or actuators without consuming the Pi’s GPIO header. The single user button and three LEDs cover basic status and control needs. Projects requiring beam-forming across larger arrays, multi-room synchronisation or professional-grade SNR will exceed the board’s two-channel design.

Highlights

  • Dual microphones capture voice from up to 3 metres
  • WM8960 low-power stereo codec handles audio processing on-board
  • Two Grove interfaces add GPIO and I²C expansion options
  • Three APA102 RGB LEDs plus one user button for visual feedback and control
  • 5 mm jack and JST 2.0 speaker output give flexible audio playback

Specifications

TypeOther

Questions about this item

Which Raspberry Pi models does the ReSpeaker 2-Mics Hat support?

The board works with Raspberry Pi Zero, 1 B+, 2 B, 3 B, 3B+ and 4B models.

What audio output options are available on the board?

A 3.5 mm audio jack and a JST 2.0 speaker connector are both provided for audio output.

How can I confirm the board is operating correctly after installation?

The three APA102 RGB LEDs and the user button are programmable; lighting the LEDs or reading the button state in software shows the board is active.

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