De Ruzie-oplosser

Introduction: De Ruzie-oplosser

The 'Ruzie-oplosser' ('Hassle-solver') is a machine that can resolve quarrels, in a fun and playful way between children through teamwork and friendship!!

Of course doesn't the machine really solve an issue where the children would fight over, but it works as a sort of placebo. By working together to solve the problem that the machine gives them, they learn to do the same with their quarrels


1. The two children who have a quarrel, each grab a handle of the machine.

2. They both start turning the handles.

3.They need to try to spin the handles at the same speed for a certain time.

If not, the car on the display will lean to the left or the right, depending who turns the fastest.

4. First set of LEDs will light up.

Keep going!

5. Second set of LEDs light up.

Almost there!

6. Third set of LEDs light up.

Well done!!

7. While they still hold the handles, they give each other a hand.

8. The green light above the machine lights up

9. The quarrel is solved!!

Group: Bas Ryckebosch, Wannes Devloo, Bert Verduyn and Arno Scatorchia

Elementary school: Het Molentje

High school: KTA lier

c.2007 All

ideas, concepts, drawings, pictures, videos, documents, posters, comments, mock-up scale models, prototypes and machines that are developed in the context of MyMachine are the property of MyMachine vzw.

Unauthorized use and/or duplication of this material without express and written permission from MyMachine vzw is strictly prohibited. MyMachine vzw is a social profit organization that fosters creativity, entrepreneurship, open education and STEM in education.

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Step 1: The Undercarriage

Make the undercarriage: this is made of pine (thickness = 2cm).

This is serrated with a panel saw.

You can find the dimensions in de pdf files 1 and 2

Step 2: The Sheath

1. We put the bottom piece(pdf file bottom) on top of the undercarriage

2. The backside(pdf file backside) is attached to the bottom piece

3. Before we attache the left and right side put the roll segments in the provided openings

4. Slide the handle(pdf file handle) in the roll segment

5. Left side(pdf file leftside) and right side(pdf file rightside) are secured on top the bottom piece and the backside

6. The front piece(pdf file front) is secured to the bottom piece, left and right side

7. Top side(pdf file top) is secured to the back-, left- and right side

This is serrated with a panel saw.

You can find the dimensions in de pdf files

Step 3: Electronics

The intention was to work this out with sensors, which counts the number of revolutions of the levers. These signals are forwarded to the Arduino which gives on its turn issues commands to the stepper motor, or he has to go to the left, middle or right column.

Step 4: Display

1. You attache the septum piece(pdf file septum) 2 times on the oblique side

2. Secure the display plank(pdf file display) on to the 2 septum pieces

3. Put the pointer at his place

4. Attache the whole display to the machine


5. Put a plexi plate above the display to protect it

This is serrated with a panel saw.

You can find the dimensions in de pdf files.

Step 5: The Solved Thumb

This segment is produced with MDF of 6mm.

We used a laser cutter to produce it, you can find the dimensions in the file beneath.

Along the inside you got to place transparent colored polycarbonate.

Step 6:

Have fun making the 'Ruzie-oplosser' ('Hassle-solver')!!!

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