{"title":"Building Block Expansion Board for micro:bit & UNIHIKER K10","handle":"building-block-expansion-board-for-micro-bit-unihiker-k10-wireless-lego-ready","url":"/products/building-block-expansion-board-for-micro-bit-unihiker-k10-wireless-lego-ready","description":"This expansion board turns a micro:bit or UNIHIKER K10 into a cable-free robotics controller for mobile builds. It provides onboard power from a user-replaceable 18650 cell slot and breaks out motor, servo, Gravity IO and I2C connections for adding sensors, displays, AI cameras and actuators.The underside uses a LEGO-compatible base with standard spacing holes, so the electronics can snap onto beams and plates instead of being taped to a chassis. The board also includes onboard power and charging indicator LEDs, plus four programmable RGB LEDs for project feedback.Charging can be handled via USB Type-C, MicroUSB or the PH2.0 solar port, making it useful for classroom robots, interactive LEGO-style mechanisms and outdoor environmental monitors. DFRobot provides a product wiki for setup guidance.Compatibility note: This version is designed for micro:bit and UNIHIKER K10. If you are using UNIHIKER M10, a specific data cable is required; DFRobot recommends the UNIHIKER M10 Bundle Kit instead.Features:Cable-Free Mobility: Integrated rechargeable 18650 battery holder can power both the main controller and high-torque motors without a USB tether.Seamless LEGO Integration: Standard LEGO-compatible base snaps securely onto beams and plates, reducing the need for adhesives or tape.Plug-and-play Gravity ports: Connect motors, servos, sensors or AI cameras with less complex wiring.Mobile Robots: Build a line-following car or obstacle-avoiding rover that runs completely wireless.Interactive LEGO Cities: Motorise elevators, gates or windmills that react to sensors.AI Companions: Mount a HUSKYLENS and K10 to create a pet robot that recognises its owner.Solar Projects: Use the PH2.0 solar port to create self-charging environmental monitors.Specifications:Controller Compatibility: micro:bit (V1 & V2)Controller Compatibility: UNIHIKER K10 (Direct Plug-in)Battery: Slot for 1x 3.7V 18650 Lithium Battery (User Replaceable)Charging: USB Type-C, MicroUSB, or Solar (PH2.0)Status: Onboard Power & Charging Indicator LEDsMotors: 4x DC Motor Ports (PH2.0)Servos: 4x Servo Ports (PH2.0)Sensors: 2x Digital/Analog IO (Gravity Standard)I2C: 1x 3.3V I2C + 1x 5V I2C (Great for AI Cameras/OLEDs)LEGO-Compatible Base: Standard spacing holesOnboard RGB: 4x Programmable LEDsDimensions: 62mm x 88mm (Compact credit-card size footprint)Includes one Building Block Expansion Board for micro:bit & UNIHIKER K10.","vendor":"DFRobot","product_type":"Robotics Expansion Board","in_stock":true,"options":[],"variants":[{"id":15663,"title":"Default Title","sku":"DF-MBT0044","mpn":"MBT0044","price":57.05,"on_sale":false,"in_stock":true,"available_quantity":193}]}