Introduction

Micro: Mate is a tiny micro: bit I/O expansion board for learning electronics and building DIY projects.

Micro:Mate expands the microbit to 6 sets of 3-pin I/O interfaces, which is capable of connecting DFRobot Gravity series modules, servo motors, sensors and jumper wires. Additionally, Pin 8, 12, 16 support voltage switch between 3V-5V, allowing up to 5V 2A digital (PWM) output.

Micro:Mate is in the same dimension of micro: bit. It connects to micro: bit through contact pins ( spring loaded), ensuring easy, compact and secure connection. The rubber bumpers and the 3.5mm audio jack on the back side keep the expansion installed stably on the board, with creating a reversed connection.

NOTE The mounting screws should be well tightened to ensure a secure 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 5V power supply. |

Specification

Board Overview

Front side Back side

Number Name Description
1 Audio Jack 3.5mm Audio Jack
2 I/O Pin Gravity series compatiable (3V only)
3 External USB power port External power supply, does not support program uploading
4 I/O Pin Gravity series compatiable (3V and 5V)
5 Voltage switch Switch between 3V, 5V(Pin 8,12,16 only) and OFF

Micro:Mate Layout

Servo Control Toturial

Requirements

Connection Diagram

Connection Diagram

Sample Code

Microsoft MakeCode Editor

MakeCode

Microsoft MakeCode JavaScript Editor

basic.forever(() => {
    basic.pause(1000)
    pins.servoWritePin(AnalogPin.P8, 0)
    basic.pause(1000)
    pins.servoWritePin(AnalogPin.P8, 90)
    basic.pause(1000)
    pins.servoWritePin(AnalogPin.P8, 180)
    basic.pause(1000)
    pins.servoWritePin(AnalogPin.P8, 90)
})

BXY micro:bit Python editor

  #http://docs.dfrobot.com.cn/bxy/examples/servo.html
 from microbit import *
 import Servo
 sv=Servo(pin8)
 while True:
   sv.angle(0)
   sleep(1000)
   sv.angle(90)
   sleep(1000)
   sv.angle(180)
   sleep(1000)
   sv.angle(90)
   sleep(1000)

Expected Results

The Servo turns back and forth from 0-180 degrees every 4 seconds

FAQ

Q&A Some general Arduino Problems/FAQ/Tips
A For any questions, advice or cool ideas to share, please visit the DFRobot Forum.

More Documents

DFshopping_car1.png Get Micro:Mate - A Mini Expansion Board for micro:bit (Gravity Compatible) from DFRobot Store or DFRobot Distributor.

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