It’s Advent season. And what do you do to let your geek shine? An LED Advent wreath of course.
A retro twitter wall (twypper)
A couple of weeks ago Jan came to me and asked me if I could build a special kind of…
Synchronizing audible fireflies
Niklas did an amazing job, letting fireflies play some tunes. It’s almost as if they are alive. Niklas, I owe…
LiPoly charging with MCP73833
For my latest projects I used a lot of single cell lipo batteries. They are really nice. High power density,…
Tiny Braitenberg vehicle
Again a Braitenberg vehicle. This one is even smaller, than the previous one and comes on a custom PCB. It…
Arduino introduction in c't
Here is my very first article. It is published in c’t, one of the best known computer magazines in Germany.…
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