Barrier 自動電閘 @STEM II 12 models

Model Pack with sensor/input/output

fischertechnik and BBC micro:bit

Product Description


Barriers are located in front of many parking lots or parking buildings. They open when a car drives up and close again after the car drives through. Have you ever wondered how the barrier knows when a car is standing in front of it and it needs to open?

Build the model using the assembly instructions and connect the cables according to the circuit diagram.



  • All model parts can be reused and recycled for other projets and student's creative pieces.    fischertechnik is made in Germany with quality and precision.
  • No soldering.  Ideal for all ages, promote problem solving, changes on the fly as debugging and adjustment can be done instantly.    All works can be done to perfection as even the smallest adjustment can be accommodated, thanks to the complete range of mechanical/structural and electronic blocks offered by fischertechnik.
  • One of the 12 models of STEM 2.   You can now order it on its own for easy whole class lesson, without needing to pick and sort building blocks every time.  



Please try the suggested task below.



At the beginning the barrier should be closed. Then when the light barrier is interrupted, the arm moves up. After 3 seconds it should close again.


Part 1 - micro:bit block commands used in the Barrier Model

To achieve fluency and competency in micro:bit coding, you really need to get a thorough understanding of each of the block catagories to be used in the Barrier Model (see part 2 below for the full code).    Fortunately, all the reference guides are available on the BBC micro:bit web site for you to get a deeper and more comprehensive understanding and mastery.

Through every fischertechnik STEM II model (12 of them), you can learn, practise, build fluency and confidence in coding.

The Barrier Model used the following micro:bit blocks.  You can click to lean more about each of the block catagories.  The links bring you directly to the respective part of the BBC micro:bit reference document site, where live codes are included for you to understand, try, and download:



Part 2   The "live" Barrier Code  - Understand, Edit and Download

  The following code has used all the mentioned blocks in Part 1 above.    


Comments In English, click the " ? " on block to find out the comment (meaning) of the block code.

  • If you read this page on a computer with wider screen size, you will be able to see the micro:bit simulator that is fully clickable.
  • If you cannot see the code, such as on a mobile phone, please  click this link instead.
  • Click   to open the code on the micro:bit website for further editing and modification.
  • Click   to download this code to your micro:bit for immediate use or to save on your computer.     





The followings are listed according to the order options


Option 1.    Barrier model parts and support resources only  - HK$ 475  per set

The following are provided under the Barrier model pack 

 Item  Quantity
Output Motor 1
Input Light gate (a pair) 1
Input mini switch (push-button) 2
Structure/Circuit cable 1600 mm length
Structure/Circuit mini screw driver 1
Structure/Circuit building blocks and cable clamps 36
Structure/Circuit base plate 258X186 mm 1
Support assembly guide (PDF) 1
Support training video 1


full micro:bit code for the model 



Option 2:  Barrier model parts and support resources + Motor Driver Board    HK$ 585


Option 3:  Barrier model parts and support resources + Motor Driver Board  + the BBC micro:bit    HK$ 708



fischertechnk STEM II 零件分類及介紹    (Barrier is 1 of the 12 models from STEM II)


fischertechnik full part list  (fischertechnk has close to 580 unique mechanical, structural, electronic parts for use by students, teachers, hobbist, engineers, from around the world).

You can order individual parts from us directly.    Contact us



The motor driver board comes with the 4 x AA battery case.  

For long lasting power supply, please order the fischertechnik rechargeable battery - the Accu Set




Order options
HK$ 475.00