Most flight controllers feature sensors which include gyroscopes and accelerometers, although additional advanced alternatives also appear with a barometer and magnetometer, when also performing like a central hub for other peripherals for example GPS. Drones are unmanned aircraft remotely controlled using software-controlled flight programs. Technically, They are really aerial robots https://elliotxawsl.tribunablog.com/the-basic-principles-of-advanced-technology-before-the-flood-42479747