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This IO expansion board adapter for the micro:bit V2 breaks out all pins to accessible connectors, making it easy to connect sensors, modules, servos, and ot...

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This IO expansion board adapter for the micro:bit V2 breaks out all pins to accessible connectors, making it easy to connect sensors, modules, servos, and other peripherals to your micro:bit projects without alligator clips or soldering.

The compact, plug-in design makes it a practical addition for prototyping and classroom use, providing a stable platform for experimenting with a wide range of components.

Key Features

  • Designed for micro:bit V2 – Edge connector slot for secure mounting
  • Breakout All Pins – Easy access to all micro:bit GPIO pins
  • Sensor and Module Compatible – Connect a wide range of 3-pin and I2C devices
  • Compact Design – Small form factor for easy integration into projects
  • No Soldering Required – Plug-and-play connection

Ideal For

  • micro:bit sensor and robotics projects
  • Classroom and STEM education
  • Prototyping with multiple peripherals
  • Expanding micro:bit functionality beyond onboard features

Package Contents

  • 1× micro:bit V2 Expansion Board Adapter
Note: micro:bit is not included.

Jargon buster

Plain-language definitions for the technical terms used above.

breakout
A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
GPIO
General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
I2C
I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
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