I'm interested to buy an ERLE-COPTER to create an autonomous drone. To know my indoor coordinates i already bought 4 beacons plus some ultrasonic sensors. I need your opinion to know how to connect all of this to the Erle Brain. The main puporse of this is build, like i said, an autonomous drone that flies in a small room with colision avoidence and then returns to his base (end of the mission).
Are bluetooth beacons the best option? Or are better options to indoor positioning system?