HobbyEagle - HobbyEagle Electronic Technology Co., Ltd.

A3 Mini is a high-performance and functional 6-axis mini gyro and stabilizer designed for R/C airplanes. The smaller size and more compact design make it more suitable for the small electric airplanes. With the new feature of multi-protocol serial receiver support, it could be compatible with most single line mini receivers on the market.

Mini size and 4.8g weight, PPM and multi-protocol digital serial receivers supported.
32-bit MCU, high-precision 6-axis MEMS sensor, improved hardware platform and new firmware solution provide more reliable performance.
6 flight modes, including GYRO-OFF, NORMAL, LOCK, ANGLE, LEVEL and HOVER modes.
Flying-wing (Delta-wing), V-Tail, Remote Master Gain.
Firmware upgradable and Programming Card supported.

Serial Receiver Protocols Supported:

PPM Receiver
Futaba S.Bus (compatible with FrSky SBUS, RadioLink SBUS and WFLY WBUS)
Spektrum DSM/DSMX 1024 Satellite Receiver
Spektrum DSM/DSMX 2048 Satellite Receiver
Spektrum SRXL
Multiplex SRXL / JR XBUS Mode B
Graupner SUMD
FlySky iBus

Overview

Layout
Serial RX	Serial Receiver signal input
AIL	Aileron Servo
ELE	Elevator Servo
RUD	Rudder Servo
AIL2	Second Aileron Servo
THR	ESC or Throttle Servo

Flight Modes

A3 Mini provides 6 flight modes which can be switched by a 3-position switch of the transmitter during flight. The factory default mode allocation of the switch is NORMAL - LEVEL - ANGLE. The color of the LED shows the current flight mode of the gyro while in use.

① GYRO OFF Mode

When operating in GYRO OFF mode the gyro will be deactivated completely, and the airplane will be completely under the control of your transmitter as it was before installing the gyro. This mode is usually used for testing purpose only.

LED Colors for Flight Modes
	Solid Red	GYRO OFF Mode
	Solid Blue	NORMAL Mode
	Blue, Flashing	LOCK Mode
	Solid Violet	ANGLE Mode
	Violet, Flashing	LEVEL Mode
	Violet, Fast Flashing	HOVER Mode

② NORMAL Mode

The NORMAL mode, also known as the 'Rate mode', is the most basic function of the gyro. It works based on the rotation rate control of each axis of the airplane. When operating in this mode, the gyro will only correct currently occurring rotational movements, a momentary reaction will be applied to the servos when the airplane rotating on corresponding axis, after rotation the servos will move back to their neutral position as soon as the airplane standing still immediately. The NORMAL mode can be used with nearly any size and type of airplanes. It can effectively improve the stability and precision of the airplane and reduce the stall point specially.

③ LOCK Mode

The LOCK mode is also known as the 'Attitude Lock mode', '3D mode' or 'AVCS mode'. Different from NORMAL mode, the gyro will perform a permanent correction for rotational movements on each axis constantly. That is when you release the sticks the airplane will stop and lock its current position immediately. This mode is well suited for practicing basic 3D maneuvers such as hovering or knife edge. Since it can help you to lock the attitude of the airplane, it is also helpful for landing.

④ ANGLE Mode

The ANGLE mode, also known as the 'Trainer mode' or 'Attitude mode', will limit the maximum angle of the airplane on both roll and pitch axes. Roll and loop are not allowed in this mode, the airplane will be stabilized all the time, independent of any stick input. This prevents the airplane from being tilted into a larger angle that may cause a danger. As soon as the sticks are released, the airplane will be brought back to horizontal position automatically. You can use this mode as emergency rescue, or in other applications, e.g., to have a training for new beginners or to use for FPV. You can change the maximum allowed angle to meet your need via the PC config software or the programming card.

⑤ LEVEL Mode

The LEVEL mode is also known as the 'Auto-Level mode', 'Auto-Balance mode' or 'Horizon mode'. When operating in this mode, the airplane will be brought to horizontal position automatically when releasing the sticks. Different from the ANGLE mode, there is no maximum angle limitation in this mode and the airplane will be stabilized only when there is no specific control input from aileron and elevator sticks. This mode can be used if the pilot becomes disoriented and would like to save the airplane from crashing.

⑥ HOVER Mode

The HOVER mode, also known as the 'Auto-Hover mode', provides the same functionality as the LEVEL mode. The only difference is that when you release the sticks, the airplane will be brought to vertical position (nose up) and keeps hovering. This mode is designed to help you to learn hovering maneuver and reduce the probability of crashing.