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
• MIC_Land MIC_R: 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