Pirate Audio: Dual Mic for Raspberry Pi

Capture sounds in stereo with Pirate Audio: Dual Mic for Raspberry Pi. This mini HAT features a matched pair of I2S microphones, a vibrant high-resolution colour display, and four tactile control buttons for a complete recording solution.

Record audio clips at the click of a button – use it as a dictaphone for notes and reminders, capture sounds for machine learning analysis, or integrate it with voice assistant APIs like Google Assistant or Alexa. Part of Pimoroni's Pirate Audio range, combining high-quality digital audio with crisp IPS displays and tactile controls.

Key Features

• Stereo I2S Microphones – Matched pair of SPH0645LM4H-B microphones with 65dB signal-to-noise ratio
• 1.3" IPS Colour Display – 240×240 pixel LCD with ST7789 driver for clear visuals
• Four Tactile Buttons – Active low on GPIO BCM 5, 6, 16, and 24
• Mini HAT Format – Fully assembled with standard 40-pin header
• Compact Design – No chunky underside components, compatible with Pibow Coupé cases

Specifications

• Microphones: 2× SPH0645LM4H-B (SiSonic™ acoustic sensor with built-in ADC)
• Display: 1.3" IPS LCD, 240×240px, ST7789 driver
• Interface: I2S audio, SPI display
• Compatibility: All 40-pin header Raspberry Pi models
• Dimensions: 31mm × 65mm × 9mm (approx)

Ideal For

• Stereo audio recording projects
• Voice assistant integration
• Machine learning audio capture
• Dictaphone and voice memo applications

Getting Started

1. Set up an SD card with the latest Raspberry Pi OS
2. Connect to Wi-Fi or wired network
3. Open a terminal and run:

   git clone https://github.com/pimoroni/pirate-audio
   cd pirate-audio/clip-recorder
   sudo ./install.sh

4. Reboot your Pi

Resources

• Pirate Audio GitHub Repository
• SPH0645LM4H-B Microphone Datasheet