ReSpeaker 2-Mics pHAT

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. Moreover, 3.5mm Audio Jack or JST 2.0 Speaker Out are both available for audio output. Note: This product does NOT include the Pi Zero 2 board

Features

* Raspberry Pi compatible (Supports Raspberry Pi Zero and Zero W, Raspberry Pi B+, Raspberry Pi 2 B, Raspberry Pi 3 B, Raspberry Pi 3 B+, Raspberry Pi 3 A+, Raspberry Pi 4 and 5)

* 2 Microphones

* 2 Grove Interfaces

* 1 User Button

* 3.5mm Audio Jack

* JST2.0 Speaker Out

* Max Sample Rate: 48Khz

* Product number: Seeed 107100001

What's on Board

* BUTTON: a User Button, connected to GPIO17

* MICLand MICR: 2 Microphones on both sides of the board

* RGB LED: 3 APA102 RGB LEDs, connected to the SPI interface

* WM8960: a low-power stereo codec

* Raspberry Pi 40-Pin Headers: support Raspberry Pi Zero, Zero 2, Raspberry Pi 1 B+, Raspberry Pi 2 B, Raspberry Pi 3 B, Raspberry Pi 3 B+, Raspberry Pi 4 and 5

* POWER: Micro USB port for powering the ReSpeaker 2-Mics Pi HAT, please power the board to provide 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 the speaker with the JST 2.0 connector

* 3.5mm AUDIO JACK: for connecting headphones or speakers with 3.5mm Audio Plug

Specifications

MIC 2 analogue microphones

LED 3 APA102 RGB LEDs

Raspberry Pi 40-Pin Headers Support Raspberry Pi Zero, Raspberry Pi 1B+/2B/3B/3B+/4B/5

WM8960 codec Low-power, high-quality stereo Codec designed for portable digital audio applications

Software Algorithm VAD (Voice Activity Detection), DOA (Direction of Arrival) and KWS (Keyword Search)

User button 1 programmable button

Voice Capture Distance 3 meters radius voice capture

Battery Exclude

Dimensions 65mm x 30mm x 15mm

Weight G.W 33g

Resources

* Product Wiki

* Schematics

Package Contents

* 1x ReSpeaker 4-Mic Array for Raspberry Pi