The main idea of Stackenlichten is to perform retro pixel animations on RGB LEDs, that can be nicely arranges. In order to hve a specific architecture, the LED cases are in shapes of triangles, that can be attached to each other using their two magnets on each side.
So I sat down with k4sp4r at the 33c3 and we came up with the idea of using triangular pixels, which I now know are called trixel. Furthermore we introduced a modular system by providing a box for each trixel with magnets, 2 on each side, for the trixel to be stacked together. Besides the organized way, thats there the name Stackenlichten.