User Manual

GA-250 Micro Gyro Manual

v3.2

Page 1 of 4

ASSAN Electronic Control Technology Co., Ltd http://www.assan.cn

The GA-250 is a high performance advanced AVCS/MEMS gyro, especially designed and optimized for R/C

helicopters. It is very small in size and very light weight. It is easy to set up and compatible with a wide range of

(digital only) servos. Its head-lock performance is superior, even for hard 3D applications.

Technical Features

 Sensor: MEMS

 System control: AVCS (Angular Vector Control System).

 Dual-gain function: two operational modes can be selected through the transmitter; AVCS mode and Rate

mode.

 Compatible with all digital servos, including 1520µS, 760µS and 960µS.

Technical Parameters

1. Operating voltage: DC 3.0V ~ 9.0V

2. Operating current: 20mA (at 5.0V)

3. Operating temperature: -15⁰C ~ 60⁰C

4. Dimensions: 21 × 21 × 10mm

5. Weight: 8.0g (including connectors and wires)

Gain Channel

Connector

(Red)

Gain Channel Plug(Red)

Rudder Channel Connector (Black)

Tail Servo Connector

Status LED

PAGE 1
GA-250 Micro Gyro Manual GA-250 Micro Gyro Manual v3.2 The GA-250 is a high performance advanced AVCS/MEMS gyro, especially designed and optimized for R/C helicopters. It is very small in size and very light weight. It is easy to set up and compatible with a wide range of (digital only) servos. Its head-lock performance is superior, even for hard 3D applications. Technical Features Sensor: MEMS System control: AVCS (Angular Vector Control System).
PAGE 2
GA-250 Micro Gyro Manual GA-250 Micro Gyro Manual v3.2 Status Light Operating Mode Error Codes Status light Blue Fast Flashing Blue Solid Blue 2 Flashes Light Off Red Slow Flashing Blue Slow Flashing Description Gyro calibrating AVCS Mode AVCS mode, rudder stick not centred Rate mode Gyro is not receiving a gain signal. Please check the wiring and connector Gyro is not receiving a rudder signal. Please check the wiring and connector Setting up your gyro for the first time.
PAGE 3
GA-250 Micro Gyro Manual v3.
PAGE 4
GA-250 Micro Gyro Manual Operation Status Light Gyro Direction GA-250 Micro Gyro Manual v3.2 Use the rudder stick to change the direction of the gyro Normal (default setting) Reversed The gyro has two operation directions, Normal and Reverse. If you rotate the helicopter at least 90 degrees counterclockwise, the gyro should attempt to counter the rotation to maintain the helicopter’s heading. The gyro should now have moved the tail blades in the same manner as if right rudder was applied.