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Firmware Update】 The newest firmware V2.0 Build 18.0615 for A3S3 and V4.0 for the programming card are available. These are important updates in which some of the bugs fixed and several new features added. Please upgrade your unit and the card to the newest version and get the newest manual and PC config utility for it.
See also What's new in V2.0? How to update? - Jun 15, 2018

Downloads for V2.0

A3S3 User Manual V2.0
(5.97MB) - May 25, 2018

A3S3 Config Utility V2.0.1
(1.41MB) - Jul 30, 2018

Wi-Fi Module for A3S3

A3S3 Utility APP for Android
Scan the QR Code on the left or visit the link below via your smartphone to get the APP.
Only for Android 4.3 or above
See also Wi-Fi Module & APP Instructions

Related Downloads for V1.x: A3S3 User Manual V1.1 - Mar 20, 2018   A3S3 Config Utility V1.0 - Feb 1, 2018

√ The files have been scanned by Norton Security, McAfee and Kaspersky, please be assured of downloading.
* Supports Windows XP, Windows 7, Windows 8 and Windows 10 (32 or 64 bit).
* If the installation fails, please download and install Microsoft .NET Framework 4 first.
* Install the USB driver (CP210x_VCP) before operating the config utility.

· A3S3 Features ·

The A3 Super 3 is a high-performance and functional 6-axis gyro and stabilizer designed for R/C airplanes. This gyro can be used with nearly any size and type of R/C airplanes and it will make the flying even easier and comfortable.

  • 32-bit MCU, high-precision 6-axis MEMS sensor, improved hardware platform and new firmware solution provide more reliable performance.
  • 7 flight modes, including Gyro-Off mode, Normal mode, Trainer mode, Atti-Lock mode, Auto-Level mode, Auto-Hover mode and User-Defined mode.
  • 6-position flight mode switching supported.
  • Compatible with most standard receivers, standard PPM single-line receivers and Futaba's S.Bus and S.Bus 2 receivers.
  • 7 wing types, dual aileron, dual elevator, delta-wing and v-tail supported.
  • External LED module, integrated with data interface, flat or upright various mounting orientations supported.
  • Servo center position and travel limits adjustment supported.
  • Pass-through function for [A2] and [E2] channels.
  • Programming card and mobile APP control supported (The programming card and Wi-Fi module are not included in a standard edition).

· External LED Module ·

An external LED module is added to make the gyro even easier and more convenient to install and use.

· Trainer Mode ·

Trainer Mode is added. When flying in this mode, you can only tilt the plane to a certain angle by giving aileron or elevator stick input. Roll and loop are not allowed in this mode, the plane will be stabilized all the time. This prevents the plane from being tilted into a larger angle that may cause a danger. This mode can be used as emergency rescue, or in other applications, e.g. to have a training for new beginners or to use for FPV.

· 6-position Mode Switching ·

This new feature allows you to switch the flight mode among all modes supported during flight, by using a mixing of a 2-position and 3-position toggle switch on your transmitter.

Programming Examples for 6-position Switch Mixing >>

· Pass-through Channels ·

Pass-through function is available for [A2] and [E2] channels. When the second aileron or elevator channel is unused, the input signal applied to [A2] or [E2] will directly be passed to the output [OUT4] or [OUT5]. With this feature, the [A2] and [E2] can be used as any other purpose as you need, e.g. throttle, gear or flap, etc.


· Config Screens ·

Flight mode setting page

Wing type setting page

Mount orientation setting page

Gyro and gain setting page

Radio channel monitor, stick rate and expo setting page

Servo monitor, sub trim and travel limit setting page

Sensor monitor

Advanced setting page


· Accessories ·

External LED Module

Wi-Fi Module

USB adapter and cable

Programming card

Receiver wires

3M double-sided tapes

Voltage Protector


· Box Content ·

[HEA3S3] A3S3 standard package

[HEA3S3FS] A3S3 full set w/ programming card

[HEA3S3WF] A3S3 full set w/ Wi-Fi module


· Specifications ·

  • Main Controller: 32-bit MCU
  • Sensor: High-precision 3-axis gyroscope and 3-axis accelerometer
  • Gyroscope Scale Range: ±2000 dps
  • Accelerometer Scale Range: ±4g
  • PWM Output: 920uS ~ 2120uS with 1520uS center length / 50 ~ 333Hz
  • Input Voltage: 4.8V ~ 8.4V
  • Operating Temperature: -10 ℃ ~ 50 ℃
  • Size: 43×27×14mm
  • Weight: 10g (excluding wires)