DFRobot Maqueen micro:bit Robot Platform

DFRobot Maqueen micro:bit Robot Platform

I tried using a robotic car "Maqueen" that extends micro: bit provided by DFRobot.

Boards and tires with sockets and geared motors to insert micro: bit and battery case (single 4 ✕ 3) and ultrasonic distance meter HC - SR 04 were included.

Assembly

• Insert the tire into the motor

• Paste double-sided tape on battery case

• Insert the battery connector into the board

• Fix the battery case to the board with double-sided tape. Plug micro: bit into socket

Completion Something cute! There is also a connector that inserts an ultrasonic rangefinder in the front.

Specification

• Front red LED, full color LED mounted
• Infrared reception sensor mounted
• Buzzer mounted
• Equipped with photo reflector for line tracing
• Ultrasonic sensor interface installed

Addition of Maqueen block for MakeCode

Since it is a robot car that extended Micro:bit, it can block coding with MakeCode.

How to add Maqueen block

• Please access below and click "New Project"https://makecode.microbit.org/
• Click the setting icon -> Extension

• Enter the following library link and click Search

https://github.com/jhlucky/maqueen

Click on maqueen to install

• Maqueen's block is added.

You can now code Maqueen with MakeCode.

Sample code for MakeCode

Various MakeCode sample codes for Maqueen are uploaded below.

• Motor control basic programhttps://makecode.microbit.org/v0/06010-26123-14565-76380
• Full color LED control programhttps://makecode.microbit.org/v0/69610-55057-29165-54269
• Red LED flash & buzzer output programhttps://makecode.microbit.org/v0/18009-58813-58076-35023
• Ultrasonic rangefinder basic programhttps://makecode.microbit.org/v0/12620-11477-21550-69385
• Infrared reception programhttps://makecode.microbit.org/v0/08425-65289-80548-62746
• Line tracehttps://makecode.microbit.org/v0/04003-70686-49203-10023
• Ultrasonic sensor obstacle avoidancehttps://makecode.microbit.org/v0/39316-36871-34994-71611

Line Tracer

I tried the sample code of the line trace. This code controls the motor by sensing black lines with two photo reflectors on the bottom front of the board.

I merely tried running the magic line on the paper.

I wrote a larger course. As it is a sample, the speed is a bit faster so I change the PWM output to the motor from 255 to 25 so that I can run late.