I mounted a LED strip to my Swift II. This will make it possible to fly in total darkness.
2 40cm long cuts where I inserted the LED-strips standing in the foam. The cuts are about 15mm deep so I can squeeze in the 10mm wide strip and glue the foam together again.
Here is an image, this is the Swift II lying on my tiled floor, belly-side up towards camera, It is even brighter from the other side.
Swift II LED
Orientation Led's
