March 31, 2011


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 took apart the old Mp3-Player,too. All buttons were re-located and connected through thin wire. And this is what the result looks like: 
a fully functional solar powered portable Mp3-Player with speaker:

And here you can see the Mp3-Player integrated in the speaker :
I added an extra solar cell to improve the loading process

This is a simple schematic:

Here a full view of my new gadget:

March 28, 2011

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 Mars yourself:
Probably I will set up a webpage so that anybody is able to control the rover over the internet..

Wireless camera attatched to kite

Kite Camera 

Some time ago i attatched my little wireless 2,4 Ghz camera to my kite.
Made a nice video but see for yourself:


..flying some loops and crashing into the ground .

March 26, 2011

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 the rover yet...

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:

March 17, 2011


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 milled the first piece.

March 11, 2011

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 i had to build a cooling system in order to prevent the screen from getting damaged through the OH's lightsource.
Cool air gets sucked in at the front and flows under the screen right through the driver board.
Two pieces of  black felt decrease the stray ligth from the OH-projector.
Here a example of the image: