DFRobot micro:bit & UNIHIKER K10 Building Block Board

DFRobot micro:bit and UNIHIKER K10 Building Block Expansion Board is a versatile wireless controller hub compatible with micro:bit, UNIHIKER K10, and UNIHIKER M10. The board features a built-in 18650 battery slot, eliminating reliance on USB cables and making it essential for mobile robotics.

The DFRobot micro:bit and UNIHIKER K10 Building Block Expansion Board offer a LEGO-compatible base and plug-and-play Gravity ports, allowing electronics to be snapped directly onto bricks to connect motors, servos, or AI cameras instantly.

Features

LEGO-compatible base with standard spacing holes
4x programmable onboard RGB LEDs
62mm x 88mm (compact credit-card size footprint) dimensions

Applications

Mobile robots: build a line-following car or obstacle-avoiding rover that runs completely wireless
Interactive LEGO cities: motorize elevators, gates, or windmills that react to sensors

AI companions: mount a HUSKYLENS and K10 to create a pet robot that recognizes its owner
Solar projects: utilize the PH2.0 solar port to create self-charging environmental monitors

Specifications

Controller compatibility:
- micro:bit (V1 and V2)
- UNIHIKER K10 (direct plug-in)
Power system:
- Battery: slot for 1x 3.7V 18650 lithium battery (user replaceable)
- Charging: USB Type-C, MicroUSB, or solar (PH2.0)
- Status: onboard power and charging indicator LEDs

Drive capability:
- Motors: 4x DC motor ports (PH2.0)
- Servos: 4x servo ports (PH2.0)
Expansion ports:
- Sensors: 2x digital/analog IO (gravity standard)
- I²C: 1x 3.3V I²C + 1x 5V I²C (great for AI cameras/OLEDs)

3-in-1 Compatibility

Compatible with the classic micro:bit and the powerful UNIHIKER K10, this single board offers broad hardware support. It serves as a standardized platform for educational environments or workshops that utilize multiple types of controllers.

Seamless LEGO Integration

The design eliminates the requirement for adhesives or tape to attach electronics. The bottom of the board features a standard LEGO-compatible base, allowing it to snap securely onto beams and plates. The structural integration seamlessly integrates the electronic module into the mechanical build.

DIY LEGO robot projects built with micro:bit and expansion board: tank, robotic arm, forklift, and helicopter.

Cable-Free Mobility

A robot is not truly "mobile" if tethered to a power source. The board manages this limitation with an integrated 18650 rechargeable battery holder that powers both the main controller and high-torque motors simultaneously. Additionally, solar charging support enables the creation of fully autonomous outdoor projects.