ANAVI Dev Mic is a compact, affordable, exceptionally adaptable open-source microphone designed with machine learning in mind. At its core are the Seeed Studio XIAO RP2040 module and an omnidirectional digital microphone that work together to ensure high-quality sound capture and processing.

For artificial intelligence (AI) and machine learning (ML) voice applications, reliable audio capture hinges on the clarity of the microphone. Despite their wide availability, affordable USB microphones can face certain limitations, such as a tendency to pick up excessive environmental noise, inflexible hardware, and proprietary firmware that cannot be updated or improved.

ANAVI Dev Mic offers three key advantages:

1. Transparency: As open hardware, ANAVI Dev Mic facilitates accessibility, education, and the right to repair.
2. Extensibility: With nine GPIO pins on the PCB, ANAVI Dev Mic is capable of extensive hardware expansion. You can integrate additional buttons, LEDs, and sensors to enhance its functionality and adapt it for various applications.
3. Customizability: Thanks to its open-source firmware, ANAVI can be tailored to your specific needs and preferences.

Fine-Tune Your Microphone

With its USB Type-C connector, ANAVI Dev Mic seamlessly connects to any PC or single-board computer (SBC) to ensure plug-and-play integration.

You can flash your own firmware to customize Dev Mic for specific applications or use its I/O pins to expand its functionality by attaching additional components such as LED indicators, a mute switch, and other buttons.

Whether you’re conducting research, developing a voice-recognition system, or creating interactive experiences, ANAVI Dev Mic is the ideal tool for your projects.

Features & Specifications

• Module: Seeed Studio XIAO RP2040
• Microcontroller: Raspberry Pi RP2040
• Microphone: STMicroelectronics MP23DB01HP PDM micro-electromechanical systems (MEMS) omnidirectional digital mic
• Connectivity: USB Type-C
• Firmware: Open source based on Raspberry Pi Pico C/C++ SDK
• Compatibility: Windows, macOS, and Linux support
• Dimensions: 35.0 x 34.5 mm (1.38 x 1.36 inches)

Demonstrating our commitments to local manufacturing and sustainability all units are produced and packaged, using eco-friendly recyclable cardboard boxes, in Plovdiv, Bulgaria.

Proudly Open Source

ANAVI Dev Mic is an entirely open-source project that combines open hardware with free and open-source software. The PCB and its acrylic enclosure were created in KiCad. The firmware is based on the open-source Microphone Library for Pico, which is available on GitHub under the Apache-2.0 License, and the Raspberry Pi Pico C/C++ SDK.

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