Maqueen Plus V3 MBT0050-AA · micro:bit · MakeCode
Maqueen Plus V3 line-following car
Assemble the AA-battery version and run DFRobot's V3 example on a black-line track. Then inspect the sensor readings behind steering.
Start with the basics
What you will build
Follow a black line on a light surface using the car's integrated sensors and motor control.
Before you start
- Create a MakeCode project, add an extension and transfer a program. Follow the kit's illustrated assembly guide.
Model and software requirements
- Selected hardware: AA version MBT0050-AA, not the 18650 version.
- DFRobot's V3 guide uses the shared DFRobot_MaqueenPlus_V2 extension. The V2 name does not mean the example is for a different chassis.
Similar products, older hardware and other software versions are not automatically interchangeable.
Materials & equipment checklist
Check items as you prepare them. Follow each source for part specifications, kit contents and assembly requirements.
0 of 4 required materials ready
Checks stay on this page only and are not uploaded. Refreshing or leaving resets them.
Required materials
- × 1
Includes the chassis, motors, battery board, sensor assembly, wheels, track, fasteners and screwdriver listed by the maker.
Material referencehttps://www.dfrobot.com/product-2935.html - × 1
Not listed in the base kit's shipping list; check the selected bundle.
Material referencehttps://wiki.dfrobot.com/mbt0050-aa/docs/23834 - × 1
For the micro:bit; check whether the selected bundle includes it.
Material referencehttps://wiki.dfrobot.com/mbt0050-aa/docs/23834 - × 4
The AA wiki specifies 1.5 V alkaline or 1.2 V Ni-MH. These are not AAA cells or an 18650 battery.
Material referencehttps://wiki.dfrobot.com/mbt0050-aa/
Equipment & tools
- A browser-equipped computer. The kit's track and screwdriver are in the manufacturer's shipping list; do not buy them twice without checking the package.
Build route
Follow the original instructions in order. This overview does not replace wiring diagrams or calibration procedures.
- 1
Confirm the kit and power
Check the AA model, four cells and micro:bit before assembly.
Open this step - 2
Assemble the car
Follow the AA guide for brackets, battery board and sensor connections. Check both power switches.
Open this step - 3
Prepare MakeCode
Install the documented shared extension and open the V3 line-following example.
Open this step - 4
Run the quick example
Transfer the official program and begin with its slow setting on the supplied track.
Open this step - 5
Check calibration
If detection is abnormal, use the calibration section. Then explore the regular sensor example linked below.
Open this step
First-run checks
- The calibration indicator distinguishes the black and white areas as the maker describes.
- The car follows the supplied track and responds to documented program changes.
Outside this project's scope
- Line following is not SLAM, free-space navigation or a guaranteed strategy for arbitrary junctions.
Assembly and operation notes
- Do not recharge alkaline cells or apply the 18650 version's charging instructions to this AA kit.
- The maker warns that some laser-printed black tracks may not be detected. Testing suggestion: keep the board dry and use a flat surface without a drop edge.
What to include in your budget
- Add the micro:bit, USB cable and batteries if absent from your bundle, plus shipping. A Ni-MH charger is a separate item if that battery route is chosen.
Original documentation and code
- AA specifications and getting startedPublic resourcehttps://wiki.dfrobot.com/mbt0050-aa/
- Assembly and calibrationPublic resourcehttps://wiki.dfrobot.com/mbt0050-aa/docs/23834
- V3 quick line-following examplePublic resource
Linked by the AA guide, even though this shared example's URL contains 18650.
https://wiki.dfrobot.com/mbt0050-18650/docs/22704 - Regular line-following and sensor examplePublic resourcehttps://wiki.dfrobot.com/mbt0050-18650/docs/22705
- Kit contentsPublic resource
Use the AA wiki for power; the store's specification block contains a conflicting 18650 label.
https://www.dfrobot.com/product-2935.html
Sources accessed: 2026-10-14. This page is compiled from the original documentation and has not been hardware-tested by RoboFacet. Check the original source for kit contents, prices and software updates.