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Flight Controller Explained: The Ultimate Guide to Understanding FPV Drone Flight Control System For beginners, the number of flight controllers (or FCs for short) for FPV drones can be overwhelming. This guide explains all the features and differences, and highlights important factors to consider when choosing a mini quad FC. What is a flight controller quadcopter The flight controller (aka FC) is the brain of the aircraft. It is a circuit board with a variety of sensors that detect the motion of the drone as well as user commands, and then uses that data to control the speed of the motors (motors) in order to make the craft move as instructed. Almost all flight controllers have basic sensors such as Gyroscopes (Gyro for short) and Accelerometers (Acc for short). Some FCs include more advanced sensors such as barometers (air pressure sensors) and magnetometers (compasses). FCs are also hubs for other peripherals such as GPS, LEDs, sonar sensors, and more. FPV drone flight controllers are evolving rapidly: becoming smaller, integrating more functions, and using better processors and hardware. Evolution of Controllers - Flight Controller Dimensions (Mounting Hole Pitch), MCU and Functionality FC connection This is a sample wiring diagram to connect…