Model of a particle accelerator

Model of a particle accelerator Some time ago I had to conduct a presentation about a special kind of particle accelerators. In order to give a simple example I built a little model of a two staged particle accelerator out of a old computer mouse’s ball, two coils and a CD-spindle’s base plate: The metal ball represents a charged particle […]

Laser triggered waterbomb trap

Back at school I built a little trap in order to fool some other pupils. At first I took apart an old CD-drive and removed the laser-moving unit: the laser unit The laser unit will be used as our trigger mechanism. Just solder a connection to the motor and add a needle to the moving part. The needle will move […]

Angular momentum 3d stabilizer

Some time ago I wanted to build a cube that could seemingly defy the law of physics and balance on its edges or corners. To achieve this aim I decided to use spinning weights which would create a large angular momentum. So if the angular momentum gets bigger than the gravitational force, the cube would remain in its position even […]


Solar Mp3 Speaker Some time ago I bought a nice little cubic speaker with volume control and internal batteries. So I decided to combine the speaker with another two gadgets I had lying around: Old Mp3-Player Old solar garden lamp I took apart the solar garden lamp and used the solar cells as a powersource for my old Mp3-Player. I […]

Mars World

Mars World After I built my little rover I decided to create a small model of mars’ surface. The rover should drive around in this model while being observed through a webcam. I took original NASA photos and built a artificial horizon: Original NASA Images: This is the result: and out the rover’s sight: Just as if you drove around […]

Miniature Mars Rover

Miniature Mars Rover Some time ago i built a little rover. This little vehicle was supposed to drive through sand and due to this it has a 4wheel-drive. Additionally I installed a little gripper at the front so this little guy is able to pick up little stones. Here is a video when I was testing the four-wheel-drive: Haven’t finished […]

Panic Button Box

Panic Button Box This is a transparent box which opens automatically if you hold a magnet to its side. The panicbutton inside is connected to an old remote and turns on  an old lamp. Nothing exciting but fun to play with:


In this post I will show you my homemade CNC-mill. The mill is entirely made of stuff you can get at the hardwarestore. I did not use pricy step-motors but cheap and strong geared motors from electric screwdrivers. Threaded rods were used to create a prepulsion-mechanism. This is the Z-axis.   X and Y axis: Just attached my dremel and […]

Homemade DIY Beamer In this post i will show you how i built my own OH-Beamer from an old computerscreen.First i had to remove all the backlightning of the screen so that you’re able to see through. The next part was to install the screen and its driver and powersource on the OH-projector After installing all the driverboard and powersource […]