micro:Mate is a tiny micro:bit I/O expansion board for learning electronics and building DIY projects. It expands 6 sets of 3-pin I/O interfaces, capable of connecting DFRobot Gravity series modules, servo motors, sensors and jumper wires. Additionally, Pin 8, 12 and 16 support voltage switch between 3V-5V, allowing up to 5V 2A digital (PWM) output! Micro:Mate is the same dimensions as the BBC micro:bit board. It connects to the micro:bit through spring-loaded contact pins ensuring an easy, compact and secure connection. The rubber bumpers and the 3.5mm audio jack on the back side ensure a stable connection and prevent reversed connections. Note: micro:bit board is NOT included * The mounting screws should be well tightened to ensure a secured connection * micro:Mate only supports 3V (3.3V) analog input from Pin 0, 1, 2 * The Micro USB Power port on Micro:Mate cannot be used for data transmission * Components with large power consumption should be connected to Pin 8, 12, 16 with a 5V power supply Product Image Micro:Mate - A Mini Expansion Board for micro:bit (Gravity Compatible) micro:bit Expansion Board for Boson (Gravity Compatible) SKU DFR0497 DFR0518 DFR0521 Operating Voltage 3.5~5.5V 3.3V/5V 3.3V Power supply DC2.1/Terminals USB USB External supply voltage 3.5~5.5V 3.3V/5V 3.3V/5V Digital ports (IO/PWM) 17/8 3 3 Analog ports (input/output) P0、P1、P2 3 3 UART x x x I2C 2 x x SPI x x x Interrupt pin (quantity) x x x Interface Type Gravity Gravity Gravity 3.5mm headphone port x √ √ Dimension 63 x 58 mm 68.5×53.3 mm 80×70 mm Mounting hole 50*55 - - Weight (g) 64 23 48 Price $14.9 $5.9 $7.9 Drive the servo √ √ x Scenarios Many motors and sensors needed Suitable for small Works Initial Stage Key Features 17 io ports with 2 i2c interfaces Can drive Quad DC Motor Driver IO port expands 6 and the pin replaces the edge connector slot Anti-reverse pad on the back, which protects the control board and prevents micro-reverse Drive high current equipment, such as steering gear, components connected to 8 12 16 3-Pin fool-proof connector x 6 Edge Connector Compatible with sensor Compatible sensor list Gravity: Digital PIR (Motion) Sensor For Arduino Gravity: Digital Capacitive Touch Sensor For Arduino Gravity:Analog Rotation Potentiometer Sensor V1 For Arduino Gravity:Analog Grayscale Sensor For Arduino Gravity: Analog Sound Sensor For Arduino Gravity: Joystick Module V2 Gravity: Analog Slide Position (Potentiometer) Sensor For Arduino Gravity: Analog AC Current Sensor Gravity: Heart Rate Monitor Sensor for Arduino Gravity: Digital Speaker Module Features * Colour-coded Gravity 3-Pin interface, compatible with hundreds of plug&play electronic modules * 3-way analog input; 6-way digital input/output (PWM); 3V/5V jumper switch; 3.5mm audio jack * External Micro USB power port, up to 5V 2A power output * Well-designed component lay-out and silk-screen. Reversed connection protection. Specifications * Interface: 6 x Gravity 3Pin * Operating Voltage: 5V/3.3V * Input Power: <10W * Measuring Range: 0-3.3V (Analog), 0-5V (Digital): * Dimension: 68.5 * 53.3mm/ 2.7 * 2.1 inches * Weight: 22.8g Resources * Product Wiki * More Documents Shipping List * 1x Micro:Mate Gravity Expansion Board * 2x Brass nut M4 5 x 4 micro:bit not included https://elecena.pl/product/22722958/micro-mate-mini-expansion-board-for-micro-bit-gravity-compatible 2023-03-07 https://elecena.pl/product/22722958/micro-mate-mini-expansion-board-for-micro-bit-gravity-compatible 2023-12-27 https://elecena.pl/product/22722958/micro-mate-mini-expansion-board-for-micro-bit-gravity-compatible 2024-09-19 https://elecena.pl/product/22722958/micro-mate-mini-expansion-board-for-micro-bit-gravity-compatible 2024-11-29 https://elecena.pl/product/22722958/micro-mate-mini-expansion-board-for-micro-bit-gravity-compatible 2024-11-30 https://elecena.pl/product/22722958/micro-mate-mini-expansion-board-for-micro-bit-gravity-compatible 2025-02-13 https://elecena.pl/product/22722958/micro-mate-mini-expansion-board-for-micro-bit-gravity-compatible 2025-04-10 https://elecena.pl/product/22722958/micro-mate-mini-expansion-board-for-micro-bit-gravity-compatible 2025-11-28 https://elecena.pl/product/22722958/micro-mate-mini-expansion-board-for-micro-bit-gravity-compatible 2025-11-29 https://elecena.pl/product/22722958/micro-mate-mini-expansion-board-for-micro-bit-gravity-compatible 2026-01-07