ReSpeaker 2-Microphone compatible with Raspberry Pi HAT
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ReSpeaker 2-Microphone compatible with Raspberry Pi HAT


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SKU: #SB-A-00088 Category: Tags: , , ,


ReSpeaker 2-Mics Pi HAT is a dual-microphone expansion board for Raspberry Pi designed for AI and voice applications. This means that you can build a more powerful and flexible voice product that integrates Amazon Alexa Voice Service, Google Assistant, and so on.

The board is developed based on WM8960, a low power stereo codec. There are 2 microphones on both sides of the board for collecting sounds and it also provides 3 APA102 RGB LEDs, 1 User Button, and 2 on-board Grove interfaces for expanding your applications. What is more, 3.5mm Audio Jack or JST 2.0 Speaker Out are both available for audio output.

Features and specifications:

  • Raspberry Pi compatible. Supports
    • Raspberry Pi 4 Model B (2GB or 4 GB)
    • Raspberry Pi 3B+
    • Raspberry Pi 3B
    • Raspberry Pi 3A+
    • Raspberry Pi 2
    • Raspberry Pi Zero
    • NVIDIA Jetson
  • Dual-Microphones
  • 2 Grove Interfaces: support GPIO and I2C
  • Programmable Button and LED: one button and three LEDs
  • Stereo Codec with Class D Speaker Driver
  • Two types audio output socket : 3.5mm Audio Jack(40mW output ), JST2.0 Speaker Out(providing 1W into 8Ω loads)
  • Far-field support (up to 3 meters)
  • Application ideas:
    • Voice Interaction Application
    • AI Assistant
  • PCB dimensions: 65mm x30mm x15mm
  • Gross weight: 33g
  • Product weight: 11.6g

Hardware overview:

  • BUTTON: a User Button, connected to GPIO17
  • MIC_Land MIC_R: 2 Microphones on both sides of the board
  • RGB LED: 3 APA102 RGB LEDs, connected to SPI interface
  • WM8960: a low power stereo codec
  • Raspberry Pi 40-Pin Headers: support Raspberry Pi Zero, Raspberry Pi 1 B+, Raspberry Pi 2 B, Raspberry Pi 3 B, and Raspberry Pi 3 B+
  • POWER: Micro USB port for powering the ReSpeaker 2-Mics Pi HAT, please power the board for providing enough current when using the speaker.
  • I2C: Grove I2C port, connected to I2C-1
  • GPIO12: Grove digital port, connected to GPIO12 & GPIO13
  • JST 2.0 SPEAKER OUT: for connecting speaker with JST 2.0 connector
  • 3.5mm AUDIO JACK: for connecting headphone or speaker with 3.5mm Audio Plug

Packing list:

  • 1 x ReSpeaker 2-Microphone Raspberry Pi HAT