The Perfect Sony Spresense Extension Board Gadget [pDTv7gfz]

The The Perfect Sony Spresense Extension Board Gadget [pDTv7gfz] enhances the capability of your Spresense Main Board, offering a broad range of audio, storage, and interface expansions. Designed for IoT developers, edge AI engineers, and embedded system prototypers, this board delivers flexible connectivity options with digital/analog microphone support, microSD storage, headphone out, and USB MSC functionality.

Whether you're developing a voice-based interface, sensor gateway, or data logger, the Spresense Extension Board provides the critical features needed for advanced edge deployment.

Key Features

• 4 analog or 8 digital microphone input channels

• 3.5mm headphone jack with amplifier

• microSD card slot for FAT32-formatted storage

• Dual USB interfaces for MSC and programming

• Selectable GPIO voltage (5V or 3.3V)

• B2B connector for main board stacking

• Includes spacers for stable board stacking

Specification

• Model: CXD5602PWBEXT1

• Size: 68.6 mm × 53.3 mm

• Audio I/O: 4 ch analog mic input / 8 ch digital mic input / headphone out

• Digital I/O: 3.3V or 5V logic

• Analog Input: 6 channels (5V range)

• External Storage: microSD slot (FAT32 required)

• USB Support: Mass Storage Class via USB-B

• Operating Temp: 10–40 °C, Humidity: 30%–80% (non-condensing)

• Storage Temp: -20–60 °C, Humidity: 10%–80%

I/O & Interface Breakdown

Mounting the Extension Board

The extension board includes 4 plastic spacers for secure installation.
To attach it:

• Insert spacers into the four mounting holes on the extension board.

• Align the USB connectors of both boards to face the same direction.

• Stack the main board onto the extension board and press down to connect via the B2B socket.

Application Scenarios

• Voice-enabled IoT devices

• Smart audio edge processors

• Sensor aggregation and storage nodes

• Real-time data logging with SD backup

Shipping List

• The Perfect Sony Spresense Extension Board Gadget [pDTv7gfz] ×1

Reference

Spresense Overview

Spresense Arduino Guide

Spresense SDK Guide

Spresense Hardware Guide

FAQ

Spresense Forum