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The MC for A2 Flight Control System from DJI is the aircraft's equivalent of a CPU. The MC (main controller) takes pilot input and, factoring in data from the IMU, GPU, and other sources, instructs the ESCs (electronic speed controllers) at the motors. In addition, the A2 main controller incorporates a 2.4 GHz DR16 receiver which is compatible with Futaba FASST series and DJI DESST series transmitters (radio controllers). To connect peripherals, the main unit features a CAN-bus terminal with 12 output channels.
Intelligent Orientation Control (IOC)
On multi-rotor aircraft-- as with airplanes--pressing "forward" on the transmitter (radio controller) moves the nose forward. However, because multi-rotors are largely symmetrical, it can be easy to lose track of which way the nose is pointing, causing the controls to become counter-intuitive. To avoid this, IOC--when enabled using the assistant software--defines movement relative to the pilot so that, for example, pressing forward will always result in the aircraft moving forward from the pilot's perspective
Point of Interest (POI)
When the GPS signal is good, users can record the current position of the aircraft as a point of interest by a preset switch on the transmitter (radio controller). The aircraft can achieve a circling flight around the point of interest with the nose pointing at the POI in an area of 16.4 to 1,640' radius, when the roll command is given. This function is ideal for shooting of a fixed or stationary object, creating an aerial tracking shot
Intelligent Landing Gear Function
Once you enable the Intelligent Landing Gear function in the assistant software, the landing gear will default at the lower position when the aircraft is on the ground. The system will also lower the landing gear in an emergency, the event of motor failure, or on auto landing, to protect the aircraft and gimbal. You can lower or retract the landing gear using a switch when the aircraft's altitude is over 16.4' from the ground
Return to Home Failsafe
Assuming the GPS has been properly calibrated and enough satellites are available, the aircraft will automatically return to its home point in the event contact with the transmitter (radio controller) is ever lost
It is also possible to assign a button using the assistant software that, when pressed, will cause the aircraft to automatically return to the home point
One-Motor Fail Protection
Available when the aircraft is in attitude or GPS attitude mode. In the event one motor fails the aircraft can maintain a stable flying condition, enough that it can safely be brought back home and landed
Table of Contents
Supported ESC Output
400 Hz refresh frequency
With Built-in Receiver: Futaba FASST series and DJI DESST series
Supported External Receivers
Futaba S-Bus, S-Bus2, DSM2
Other DJI Products Supported
Z15, H3-2D, iOSD, 2.4G Bluetooth Data Link, and S800 EVO
Hovering Accuracy (GPS Mode)
Vertical: ±1.6' / 0.5 m Horizontal: ±4.9' / 1.5 m
Maximum Wind Resistance
< 26.2 fps (8 m/s) / 17.9 mph (28.8 km/h)
Maximum Yaw Angular Velocity
Maximum Tilt Angle
±19.7 fps / 6 m/s
Maximum: 5 W Typical: 0.3 A at 12.5 V
Assistant Software: Windows 8, 7, or XP SP3 -- 32 or 64-bit