Product overview
DJI A3 is a flight control system for specified quadrotor, hexarotor and octorotor configurations. It weighs 186g and consumes a maximum of 8W. The main controller incorporates an IMU and measures 64mm × 42mm × 19.5mm. Other module dimensions are 51mm × 34mm × 13.5mm for the PMU, 34mm × 26.5mm × 20mm for the IMU, 61mm diameter × 13mm for GPS-Compass Pro, and 27mm × 27mm × 8mm for the LED. The standard A3 GPS is required for takeoff and remains necessary when D-RTK is added.
The controller provides eight function channels, including four configurable outputs, with Mobile SDK and Onboard SDK expansion. F1–F4 are outputs; F5–F8 can switch between input and output, with multifunction PWM input requiring Onboard SDK. Standard ESC support specifies 1520μs neutral and a 400Hz refresh rate; an ESC with a BEC requires its red wire to be disconnected. Recommended batteries are 3S–12S lithium polymer. Lightbridge 2, Datalink 3 and S-BUS receivers require the correct receiver selection in DJI Assistant 2; PPM receivers are unsupported.
Hovering accuracy is 0.5m vertically and 1.5m horizontally; with D-RTK GNSS, positioning figures are 0.02m + 1ppm vertically and 0.01m + 1ppm horizontally. Network RTK is unsupported. Operating temperature is -10°C to +45°C, and maximum wind resistance is less than 10m/s. Lightbridge 2 enables course lock, home lock, point-of-interest orbit and waypoint modes. Propeller-loss protection requires at least six rotors and a pre-failure lift-to-mass ratio above 2.5. If multiple propellers fail, they must be separated; spinning after propeller loss triggers an automatic switch to course-lock mode.
Specifications
| Specification | Value & conditions |
|---|---|
| Model | DJI A3 |
| Product type | Flight control system |
| User manual | A3 / A3 Pro user manual, version 1.4, dated 2017-08-25, PDF |
| Quick start guide | A3 / A3 Pro quick start guide, version 1.2, dated 2018-04-27, PDF |
| Weight | 186g |
| Power consumption | Maximum 8W |
| Module dimensions |
|
| Built-in IMU | IMU integrated into the main controller |
| Function channels | Eight function channels, including four configurable outputs |
| Hovering accuracy | Vertical: 0.5m; horizontal: 1.5m |
| D-RTK positioning performance | Vertical: 0.02m + 1ppm; horizontal: 0.01m + 1ppmWith D-RTK GNSS. |
| Maximum wind resistance | Less than 10m/s |
| Maximum yaw rate and tilt angle | Yaw rate: 150 degrees/second; tilt angle: 35° |
| Maximum ascent and descent speeds | Ascent: 5m/s; descent: 4m/s |
| Supported multirotor layouts |
|
| ESC interface | Standard ESC support with 1520μs neutral and 400Hz refresh rateDisconnect the red wire if the ESC has a BEC. |
| Recommended battery | 3S–12S lithium-polymer battery |
| Operating temperature | -10°C to +45°C |
| Computer system requirements | Windows 7/8/10, 32-bit or 64-bit |
| External receiver interfaces | Lightbridge 2, S-BUS and D-BUS |
| Receiver compatibility and exclusion | Lightbridge 2, Datalink 3 and S-BUS receivers supported; PPM receivers unsupportedSelect the receiver type correctly in DJI Assistant 2. |
| Supported external DJI products | Ronin-MX, S900, S1000, S1000+, iOSD, DATALINK PRO and D-RTK |
| SDK and CAN integration | CAN1 connects A3 modules and DJI equipment; CAN2 connects SDK equipmentCAN1 and CAN2 are not interchangeable; CAN2 is reserved when SDK development is not used. |
| SDK support and interfaces | Mobile SDK and Onboard SDK; API/CAN2 interfaces |
| Propeller-loss protection | Conditional propeller-loss protection; automatic switch to course-lock mode if the aircraft spins after propeller lossAt least six rotors; pre-failure lift-to-mass ratio greater than 2.5; when two or more propellers fail, the failed propellers must be separated. |
| Other protection functions | Propulsion protection, special-area protection, low-battery intelligent return-to-home and low-voltage protectionPropulsion protection applies to propulsion saturation or excessive load; low-battery intelligent return-to-home uses a DJI intelligent battery. |
| PWM port allocation | F1–F4 outputs; F5–F8 switchable between input and output |
| Multifunction PWM input | F5–F8 multifunction PWM inputMultifunction PWM input requires Onboard SDK and cannot operate independently. |
| Data storage | Built-in iOSD storageReal-time iOSD parameter display requires Lightbridge 2. |
| Ground-station integration | DJI GO app and PC ground-station operationDJI GO ground station requires Lightbridge 2; PC ground station requires Lightbridge 2 or DATALINK PRO. |
| Intelligent flight modes | Course lock, home lock, point-of-interest orbit and waypoint modesRequires Lightbridge 2. |
| Parameter adjustment and simulation | Remote adjustment through DJI GO; PC adjustment and simulator through DJI AssistantRemote parameter adjustment requires Lightbridge 2 and DJI GO. |
| GPS requirements and network RTK limitation | GPS is required for takeoff; the standard A3 GPS is still required with D-RTKD-RTK must operate with at least one A3 GPS module. |
| Network RTK support | Network RTK unsupportedWith D-RTK. |
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