Hand dryer 乾手機 @STEM II @12 models

Model Pack with sensor/input/output

fischertechnik and BBC micro:bit

Product Description


You can find various models of merry-go-rounds at public festivals and amusement parks. The first motor driven merry-go-round was placed in operation on January 1, 1863 in Bolton in England.

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.  



Task 1

The merry-go-round is to be started with the push-button switch . It is to rotate for 10 seconds and then stop.

Task 2

Just going in one direction is rather boring. Change the program so that it waits a second after the motor stops and then the merry-go-round turns in the other direction for 10 seconds.

Part 1 - micro:bit block commands used in the Hand Dryer 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 Hand Dryer  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 Hand Dryer  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" Hand Dryer 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.    Merry-Go-Round model parts and support resources only  - HK$ 456  per set

The following are provided under the Merry-Go-Round model pack 

 Item  Quantity
Output Motor 1
Input mini switch (push-button) 1
Structure/Circuit cable 600 mm length
Structure/Circuit mini screw driver 1
Structure/Circuit building blocks and cable clamps 98
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:  Merry-Go-Round model parts and support resources + Motor Driver Board    HK$ 566


Option 3:  Merry-Go-Round model parts and support resources + Motor Driver Board  + the BBC micro:bit    HK$ 689



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$ 324.00