Micro_Mate-_A_Mini_Expansion_Board_for_micro_bit_SKU__DFR0518-DFRobot

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

• 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
• Weight: 22.8g

Board Overview

Micro:Mate Layout

Servo Control Toturial

Requirements

• Hardware
  • micro:bit x 1
  • Servo x 1
  • MicroUSB power supply

• Software
  • MakeCode Block Editor/ JavaScript Editor / BXY Python Editor

Connection Diagram

Sample Code

Microsoft MakeCode Editor

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

More Documents

• [Schematic & Layout](https://github.com/Arduinolibrary/DFRobot_Micro_Mate/raw/master/MicroMate Expansion Shield.pdf)