As it was very hard to figure out rotation as soon as the MikroKopter was away more than about 20m, I changed the lights.
Now there are four different colours and they sit at the side to avoid glairing in my face when hovering over my head.
Video shows that I had to calibrate and trim a lot until the Mikrokopter was stable enough to fly in this room.
I walked forward to be closer to the table to be landed on. After the landing I walked back and it looks like I forgot the engines were still on.
OUPS (04:35 in the video)
Testing room size
The cdrom cover has a crack, the antenna holder is not as straight as it was before, and one motor lost a ball bearing.
Hope I can fix the motor soon.