NEW New Firmware Update F/W V2.2 is available 2026-02-07
The new firmware update introduces supports for Futaba SBus2, SBus-24 and Spektrum X-Plus Channels.
A3 Super 4 is a high-performance and functional 6-axis gyro and stabilizer designed for R/C airplanes. The hardware has been improved yet again based on the successful previous generation. Multi-protocol serial digital receiver support and customizable output channels added to make the gyro more user-friendly and reliable.
- 32-bit MCU, high-precision 6-axis MEMS sensor, improved hardware and stable firmware provide more reliable performance.
- 6 flight modes and 6-position switching, including GYRO-OFF, NORMAL, LOCK, ANGLE, LEVEL and HOVER modes.
- User defined mode supported ①.
- PWM, PPM and multi-protocol serial digital receiver supported.
- Customizable output channels and 2 pass-through auxiliary channels.
- Dual aileron and dual elevator system, delta wing (flying wing), dual delta wing (Canards) ④ and V-tail supported.
- Remote master gain supported.
- Firmware upgradable and Programming Card supported.
Serial Receiver Protocols Supported
- PPM Receiver
- Futaba SBus / WFLY WBus
- Generic SBus, compatible with FrSky, FlySky, TBS, ELRS, JETI, etc.
- Spektrum DSM2/X 1024 Remote Receiver
- Spektrum DSM2/X 2048 Remote Receiver
- Spektrum SRXL
- Multiplex SRXL / JR XBUS Mode B
- Graupner SUMD
- FlySky iBUS
- JETI EXBus ②
- TBS/ELRS CRSF ③
① F/W V1.3 or later is required for User defined mode. ② F/W V1.1 or later is required for JETI EXBus. ③ F/W V1.6 or later is required for CRSF. ④ F/W V2.1 or later is required for Dual delta wing.
Standard PWM Receiver Connection
When using a standard PWM receiver, A3 Super 4 has 7 input channels in which at least one channel should be connected to the receiver in Aileron (A), Elevator (E) and Rudder (R), or the gyro will enter the receiver timeout mode (Red Slow Flashing). [Serial RX/M] is used for flight mode switching, use a 3-position switch of the transmitter to switch the flight mode during flight. [G] is used for remote master gain control, a slide lever or a switch of the transmitter can be used to tune or change the master gain during flight. Connect the ESC or the throttle servo to the receiver directly without passing through the gyro.
Standard PWM Receiver Wiring
Single-line Receiver Connection
A3 Super 4 supports PPM and multi-protocol digital serial receivers which allows you to connect the receiver to the gyro with one single wire on the slot [Serial RX/M]. When using single-line receivers, 2 auxiliary pass-through channels (AUX1 and AUX2) are available which can be used to output the expected channels of the receiver directly. By default, AUX1 is always assigned to Throttle and applies to OUT5, while AUX2 is disabled. Depending upon the receiver type selected, The gyro uses the preset channel assignment to recognize the channels from the receiver. Refer to the table below and check if your radio transmits the channels in the correct order. After each time you have changed the receiver type the current channel settings will be reset to the default. Choose "None" for those channels you do not use.
Default Channel Assignment
Single-line Receiver
Spektrum DSM2/X remote Receiver
Spektrum SRXL2 Receiver
Customizable Output Channels
A3 Super 4 provides 5 customized PWM output channels, including OUT1 to OUT5, of which the function can be specified by user.
Output Functions
Standard Fixed Wing
Delta-wing (Flying-wing)
V-Tail
Dual delta wing (Canards)
Programming
You can use either HobbyEagle A3 Configurator or a Programming Card to setup the gyro.
Basic Setting
Receiver Setting
Output & Servos Setting
A3 Super 4 User Manual 
A3 Configurator V1.2.7 
USB Driver V6.7.6 for Windows XP/7/8/8.1 
Microsoft .NET Framework 4 
Changes
- Futaba SBus2 support added.
- SBus-24 frame type support added.
- Spektrum X-Plus channels support added for DSM2/X 2048 Remote and SRXL.
- Other minor fixes and improvements.
Notes
- A3 Configurator and the Programming Card can continue to be used without any update.
- The settings in the gyro can be used unchanged after updating, but to be safe, backup the settings before updating.
Changes
- Dual Delta wing type added for delta wings with canards.
- Increased the upper limit of maximum roll angle to 180 degrees to solve the issue that the airplane cannot reach the expected angle when flying with a small stick travel setting in ANGLE mode.
- Other minor fixes and improvements.
Notes
- Upgrade the programming card X to V1.7 to support new features.
- Upgrade A3 Configurator to V1.2.7 to support new features.
- The settings in the gyro can be used unchanged after updating, but to be safe, backup the settings before updating.
Changes
- Fixed the issue that the stick input becomes too small especially using a small end-point setting when flying in LEVEL/HOVER mode.
Notes
- A3 Configurator and the Programming Card can continue to be used without any update.
- The settings in the gyro can be used unchanged after updating, but to be safe, backup the settings before updating.
Changes
- Algorithm improved for Angle Mode.
Notes
- A3 Configurator and the Programming Card can continue to be used without any update.
- The settings in the gyro can be used unchanged after updating, but to be safe, backup the settings before updating.
Changes
- Fix the compatibility issue of connecting to a FlySky's SBus receiver.
Notes
- A3 Configurator and the Programming Card can continue to be used without any update.
- The settings in the gyro can be used unchanged after updating, but to be safe, backup the settings before updating.
Changes
- Algorithm improved for dynamic gain control, which will provide you a better experience in ANGLE or LEVEL flight mode.
Notes
- A3 Configurator and the Programming Card can continue to be used without any update.
- The settings in the gyro can be used unchanged after updating, but to be safe, backup the settings before updating.
Changes
- TBS/ELRS CRSF serial protocol support added.
Notes
- Upgrade the programming card X to V1.6 to support CRSF.
- Upgrade A3 Configurator to V1.2.3 to support CRSF.
- The settings in the gyro can be used unchanged after updating, but to be safe, backup the settings before updating.
Changes
- Trimming problem of auto dual elevator output fixed.
- Servo smoothing processing added for ANGLE mode.
- PWM and PPM capture algorithm improved to enhance the anti-interference capability.
- Other minor fixes and improvements.
Notes
- The new version includes several important improvements and is recommended for all users.
- Please upgrade the Programming Card X to the newest version V1.5.
- The settings in the gyro can be used unchanged after updating, but to be safe, backup the settings before updating.
Changes
- User defined flight mode added.
- Other minor fixes and improvements.
Notes
- Upgrade the Programming Card X to V1.4 to support user mode.
- Install or upgrade A3 Configurator to V1.2.2 to support user mode.
- The settings in the gyro can be used unchanged after updating, but to be safe, backup the settings before updating.
Changes
- FlySky PL18 AFHDS3 iBus serial protocol support added.
- Other minor fixes and improvements.
Notes
- The program card and A3 Configurator do not need to be upgraded.
- The settings in the gyro can be used unchanged after updating, but to be safe, backup the settings before updating.
Changes
- JETI Duplex EXBus support added.
- Remove the mixing on output functions AIL2 and ELE2 in flying-wing mode, to make them possible to be used for Canards or other purposes.
- Improvements on PPM capture.
- Other minor fixes and improvements.
Notes
- Upgrade the programming card to V1.3 to support JETI EXBus.
- Upgrade A3 Configurator to V1.2.1 to support JETI EXBus.
- The settings in the gyro can be used unchanged after updating, but to be safe, back up the settings before updating.
Release notes for the latest "X" hardware
- Welcome screen and main menu added.
- RC Monitor, Servo Monitor and Sensor Monitor added.
- Gyro State, Flight Mode and Master Gain real-time display added.
- Other minor fixes and improvements.
- Dual Delta wing type added for A3S4.
- Increased the upper limit of maximum roll angle to 180 degrees of ANGLE mode for A3S4 and A3 Mini.
- TBS/ELRS CRSF option added.
- Minor optimizations.
- User Defined Mode option added for A3S4.
- Applicable to all versions of A3S4.
- Other minor fixes and improvements.
- JETI EXBus option added to the receiver list of A3S4 and A3 Mini.
- Other minor fixes and improvements.
- A3 Super 4 support added, compatible with A3 Mini and A3 Super 3 (F/W V2.x).
- Channel mappings reset and gyro restart confirmation added after changing the receiver type.
- "DSM Binding Option" added in the receiver menu of A3 Mini.
- Other minor fixes and improvements.
- A3 Mini support added.
- Compatible with A3 Super 3 (F/W V2.x).
Release notes for the older hardware
Changes
- TBS/ELRS CRSF option added.
Notes
- This version is for A3 Super 4 only.
- Due to the voltage limitation of the old program card, always limit the working voltage of the gyro below 5.5V when using for A3 Super 4, or it may cause connection to fail or even damage of the card!
Changes
- User defined flight mode added.
- Other minor fixes and improvements.
Notes
- This version is for A3 Super 4 only.
- Due to the voltage limitation of the old program card, always limit the working voltage of the gyro below 5.5V when using for A3 Super 4, or it may cause connection to fail or even damage of the card!
Changes
- A3 Super 4 support added.
- Channel mappings reset and gyro restart confirmation added after changing the receiver type.
- Other minor fixes and improvements.
Notes
- Due to the capacity limitation of the old program card, this version has been divided into 3 update packages in which each firmware supports only 2 devices, please choose according to your needs.
- Due to the voltage limitation of the old program card, always limit the working voltage of the gyro below 5.5V when using for A3 Mini or A3 Super 4, or it may cause connection to fail or even damage of the card!
- A3 Mini support added.
- Compatible with A3 Super 3 (F/W V2.x).
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![[HEA3MSTND] A3 Super 4 Standard](images/a3s4-standard.jpg)
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