*Firstly, I am forced to apologize for my English level. It should be better. I’m working to improve it as soon as possible. So let’s go. In the first post I am glad to tell the story about how I’m so interested about multicopters so far. Everything began time ago, January the 6th. This date match with a Spanish Christmas tradition named “día de los reyes magos” (Three Kings Day). Then I have received my first quadcopter. My first impression the little toy doesn’t made me feel so fortunately. It was a little Syma X12S, white painted. My first experiences were involved two short flights. Furthermore, my new little "friend" seemed to be damaged (it was). My first lookup made me feel that this play would be short in time. On the other hand, I had a previous related toy, a helicopter, that was boring almost from the beginning. Quadcopter seemed to be the same but ugliest one. Flight after flight and crash after crash I began to drive it quite better. It was so e...