settings.py(in hydra-flock-drone repo) and then user
drone_init.pyto register each drone to the central controller. https://github.com/HTTP-APIs/hydra-flock-drone/blob/master/flock_drone/mechanics/drone_init.py
locationfallback in case the central controller fails might be outdated. As @Mec-iS try to find what the problem is and propose a solution. It'll help you understand the project better as well.