Click on picture for diagrams.
My creations are mostly from two fields in the origami world - tessellation and modulars. The motivation for this model came from Color Shifting; I wanted to get some hews in my models and tessellations are always monochrome. Looking for simplicity, I have started with a color change on the Kite base, and things started to evolve from there. Choosing 7 units to finish the model with was not because of laziness, but an appeal to the 3D effect you get by it. The locking mechanism, although very simple, hold strongly enough with 7 or 8 units.