Blog: projects and builds

Mosaic pictures


My old interest in picture mosaics got revived by a image I saw in a gallery recently. I don’t like the idea to upload so many (potential private) photos on a server, so I didn’t look at any online services for that. I reactivated an old license of AndreaMosaic. I soon realized not having enough suitable pictures since I put the following constraints:

  • The individual pictures should still be visible
  • The pictures should not be manipulated by the software (except for a horizontal mirroring), I wanted the original pictures to be almost preserved.

Unsplash offers millions of nice copyright-free pictures. In order to download those pictures effectively I modified the Bulksplash script in order to circumvent the picture amount restriction by looping. The script is malfunctioning as unsplash only gives you about the same random pictures. Solution: I used the script several times throughout the day and cleaned duplicates with another program (I used the free “photos duplicate cleaner” from the app store). Code below.

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Moving things


After watching this talk at GPN18 from Niklas Fauth and Jan Henrik I decided to make my own "moving object". The video and the accompanying github page explains how to flash a cheap E-Board aka Hoverboard, that are self-balancing scooters like "Segways". In particular, I intended to make a transport platform for another project of mine (more on that later) in analogy to what the call "transOtter", controlled by a Gametrak. Read more…



Making a LED matrix may teach you a lot about programming, which took me way longer than expected. Mind the diameter of the wiring or they'll burn. The 2gb sd-card lying around is not enough. Read more…