Washing Machine 洗衣機 @STEM II 12 models

single micro:bit model from pack


Product Description


The most widespread design is the drum washing machine, in which a washing drum rotates around an axis. The advantage of this machine type is the small size so that, for example, it can be installed in kitchen units.

And now what all happens during a washing operation? A washing cycle, a spin cycle and a drying cycle are performed.

In the following exercises, you will become familiar with and program various program parts.


Task 1
After you push the Start button, the drum rotates at a low speed for 10 seconds (wash cycle). The display (indicator light on M2) shows the operation of the machine

Task 2
Change the program so that the washing machine only starts when the safety switch for the door is closed.


Task 3
Place a  spin cycle in the programme.  Here the motor is to run at full speed for 15 seconds

Task 4
Expand the program with a drying cycle for the laundry.   To do this, the drum rotate clockwise slowly at first (10 seconds) then takes a break for three seconds and then rotates counterclockwise for 10 seconds.

Task 5
During the program sequence, the user is always to be shown the current cycle in the text display. 

When all washing is completed then the end is also to be shown in the display.   Change your program accordingly.

See online guide with micro:bit coding samples for the Washing Machine model.

See micro:bit coding with input and output guides here.


This is a specially discounted package - delivered in a clear plastic bag.  

Each pack comes with the bonus fischertechik storage base (box 250 x 186

I/O board for micro:bit 

micro:bit pins extension board, designed specially to take advantage of  fischertechnik's unique,  flexible red and green round plug cable connections. By design, the I/O board rubber legs slot into the fischertechnik black base-plate grid securely.




The price below is for 1 model out of the 12 models STEM II pack.  If you want to build all 12 models, order the full STEM II pack instead.


  • All model parts can be reused and recycled for other projects 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.  


Part 1 - micro:bit block commands used in the Washing Machine 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 Washing Machine 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 models (12 of them), you can learn, practise, build fluency and confidence in coding.

The Washing Machine 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" Washing Machine 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.     


Connector No. Description
Outputs 8

8 x light/LED

4 x DC motor

- 600mA per output
- 6 - 9 V
    Inputs 6

    5 x analog/ digital

    1 x digital

    - signal up to 5V


    I2C 1 1 x connector (SCL, SDA)
    5V 1

    1 x sensor power supply connection

    (6-9V power supply)

    3.3 V 1 1 x sensor power supply connection
    Battery 1 1 x battery (6 - 9 V) min 4.5 V
    Power Supply 1 1 x universal power adaptor ( 6 - 9 V) min 4.5 v