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Elecfreaks Tracking Module for ring:bit car v2


Elmwood Electronics has stopped accepting orders. This product might be available at PiShop.ca. Please check this blog post about our recent team merger.

View on PiShop.ca (SKU 1009-1)

This line following module is a dedicated module designed for the Ring:bit car V2, it is easy to be installed and it enables line following functionality for the Ring:bit car V2.

Equipped with double infrared probes, it can detect distances between 2~12mm accurately.  It can also follow lines around circles, the detection of the black lines and the detection of the edges.



    • The micro:bit can drive it directly with the input voltage of this module is 3V~5V.

    • It only needs one IO port in the Ring:bit with standard 3-pin GVS ports.

    • It uses infrared light to detect with a strong anti-interference capability.


    Items Parameters Notes
    Name Ring:bit car V2 line following module -
    SKU EF03424 -
    Working Voltage DC 3-5V -
    Port Ring:bit car dedicated pin ports Fixed by screws
    Types of Output Signal Simulation -
    Effective Distance 2~12mm -
    Dimension 34.15 x 27.20mm -
    Net Weight 4.7g -


    Quick to Start

    Hardware Connection

    • The first step is to insert this module to the baseboard of the Ring:bit car V2.

    • The next step is to fix the module with the two screws.


    • Extension is completed.

    Software Programming

    • Program a simple line-following code in the makecode .

    • The equivalent connection port for the left and right wheels is P1 and P2 when on start.

    • When the left detection probe deviates from the black line, the right wheel would stop moving and the left wheel would adjust to go back to the black line in the speed of 50.

    • The right detection probe would work the same as the way of the left detection probe works.

    • When both of the detection probes detects the black line, the car would go forward in the speed of 100.

    Links for the code: https://makecode.microbit.org/_Jh2RVDMRwDz1



    • It can run around the circle slowly.

    Collections: ElecFreaks, micro:bit

    Type: micro:bit add on