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Welcome to my Homepage!

On this homepage you will find information about my Soft- and Hardwareprojects for several computer systems. The navigation bars on the left and top will bring you directly to the different topics. The language selection between German and English is done automatically if your browser is properly configured; should you prefer another language, please click on the desired flag on the top-right.

Please also sign my Guestbook. Accolade and criticism is highly welcome. I will try to improve the content of this homepage according your suggestions. I would be also happy to get feedback regarding my projects - what do you like/dislike and what do you want to see in the future?

But now I wish you much fun by searching about these pages!

Stefan Robl

Homepage Update History
electronics
Doing hardware developments, again
Hardware development After having spent quite a lot of my spare time for several software developments, I have started developing hardware, again. By following the title link you can see some pictures of the setup I have worked with recently.
2006-12-31
electronics
GB60Board schematics and layout released
GB60 Even though I've finished this board already at the beginning of the year, I've found no time for a release until today.
I now release the schematics, the layout and a short documentation together with a demonstration firmware to allow a greater audience to get access to the outstanding 9S08 family of microcontrollers from Freescale. I am sorry for the delay and hope that you'll like this project!
2006-06-11
amiga
Golden Image Mousepad
If you own one of those old, but really excellent optical Amiga mices from Golden Image but seach for a new mouse pad, I can provide some help: Just print this picture with a high resolution printer... ;-) Works really very well! Unfortunately I have forgotten the correct scaling factor. However, it is quite easy to find out the right dot size - especially if you still own the old (damaged) mouse pad.
2006-01-04
xmas
Summary 2005 / Year 2006 greetings
English version / German version
2005-12-31
photos
Laser photos
Laser photos At New Year's eve I provide instead of a firework some laser photos.
Lasers are as well "colorful" and - correctly used - as effectful as a firecracker... ;-)
2005-12-31
electronics
Universal "GB60Board"
GB60 Some weeks ago I finished my design of a very small, universal microcontroller board powered by the Freescale 9S08GB60 microcontroller. I will publish a whole lot of information about this board within the next time.
2005-12-31
photos
Pictures of july/august 2005
Pictures of july/august 2005. To add some more recent content to my photos section, I have made a gallery of some pictures I have taken in july/august of summer 2005.

I hope you enjoy them!
2005-08-28
electronics
Experimental driving circuit for a synchronous harddrive motor
HD-motor Some days ago I played around with a killed harddrive's synchronous motor which usually turns the harddrive platters. I asked myself how the driving circuit would look like to bring such a motor to life.
As it sounded like an interesting experiment, I've developed an experimental driving circuit to bring the motor to it's limits. Read more under the title link (incl. video of the experiment)...
2005-05-08
xmas
Summary 2004 / Year 2005 greetings
English version / German version
2005-01-02
photos
Semiconductor macro photos
EPROM-Macro Under the title link you'll find several of my recently made macro photos of semiconductors (EPROMs, RAMs, ...). For those of you who haven't seen the inside of a microchip yet, this is a must-see... ;-)
2004-12-05

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