ReSpeaker 2-Microphone compatible with Raspberry Pi HAT

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

Resources:

• Getting Started, wiki.seeedstudio
• Respeaker 2-Mics Pi HAT SCH, pdf
• Respeaker 2-Mics Pi HAT PCB, pdf
• Respeaker 2-Mics Pi HAT SCH, zipped file
• Respeaker 2-Mics Pi HAT PCB, zipped file
• ReSpeaker 2 Mics Pi HAT 3D, zipped file
• Seeed-Voice Driver, GitHub
• Algorithms includes DOA, VAD, NS, GitHub
• Voice Engine project, provides building blocks to create voice enabled objects, GitHub
• AEC