Building Block Expansion Board for micro:bit & UNIHIKER K10 (Wireless & LEGO-Ready)

This LEGO-compatible expansion board is designed for the micro:bit V1, micro:bit V2, and UNIHIKER K10 microcontrollers. It offers a practical foundation for students, educators, and makers creating building block robotics and sensor-driven projects.

Broad controller compatibility

The expansion board is engineered to seat both micro:bit V1 and V2 units as well as the UNIHIKER K10. This allows users to easily transition between controllers without changing their external wiring or mechanical setup.

Multi-actuator motor support

With 4 DC motor ports and 4 servo ports onboard, the expansion board can drive complex movement mechanisms simultaneously. It provides the necessary connections for mobile robots, robotic arms, and mechanical assemblies.

Gravity IO and dual I2C

The board features integrated Gravity IO connectors alongside dual I2C ports for modular peripheral expansion. These connections simplify attaching compatible sensors, displays, and add-on electronics without loose jumper wires.

Building block integration

Designed with LEGO-compatible mounting points, the board easily snaps into standard building block constructions. This enables quick prototyping and rigid mechanical assembly for custom educational models.

Dedicated 18650 battery power

Power is supplied via an 18650 battery to deliver ample, stable current for connected motors, servos, and microcontrollers. This allows fully untethered operation for roving robotics and portable devices.

Downloads & documentation

• Product wiki (DFRobot)