David Melendez, Spain, is a R&D software engineer for TV Studio manufacturer company, Albalá Ingenieros in Madrid. He has won several prices in robotic tournamens at Campus Party and has been a speaker in several conferences: Nuit Du Hack, RootedCON, 8dot8, HKOSCON, etc. He is the author of the book "Hacking con drones", and robot maker.