The cable has now been delivered and so I can now always charge batteries when they are empty and cooled. The drone is me several times / fallen at the ceiling and then flown back to the floor. Still all quite. On the ceiling of course is clear if one remembers physics at school. As soon as he is near the ceiling, he pulls himself firmly with momentum.
Today I had the first time a chance to let it fly in the garden.
First flight, wonderful, included video has all worked out.
On the second flight, he is me then crashed, but he has thought about it. Maybe I was too high or fly too far away. This is absolutely great fun and is worth in my opinion, every Euro.