FrSky R9 STAB OTA Instruction Manual

Instruction manual for FrSky R9 STAB OTA
Introduction
Thank you for purchasing FrSky R9 STAB OTA telemetry receiver.It is a 900MHz/868MHz long-range and stabilization receiver with a
built-in 3-axis gyroscope and 3-axis accelerometer. In order to fully enjoy the benefits of this system, please read the instruction
manual carefully and set up the device as described below.
Overview
SBUS out
Working
State
Green LED Red LED Status Yellow LED State (Calibration of Accelerometer)
On On Register ON
Flash Flash Register successfully OFF
On Off Bind
Flashing
Flash Off Work Normally
Off Flash Failsafe

Specifications

• Dimension: 45.7*26.3*16.2mm (L x W x H)
• Weight: 18.6g
•
Number of channels: 8/16CH (CH16 outputs RSSI)
•
Operating Current: 140mA@7.4V
•
Operating Voltage Range: 3.5V~10V

Features

•
ACCESS Protocol and supports OTA function
•
900MHz/868MHz long-range with low latency
•
Built-in 3-axis gyroscope and 3-axis accelerometer
•
Support S.Port (Configurable in OpenTX / FrOS)

Channels

Number of Corresponding parts
Full name
channel on the model
CH1 AIL 1 Aileron
CH2 ELE 1 Elevator
CH3 THR Throttle
CH4 RUD
Rudder
CH5 AIL 2
Aileron
CH6 ELE 2 Elevator
Gyro gain adjustment of CH9: When the the value of CH9 is in the center, the gain is zero. The gain increases as the value gets bigger.
Until the value is ±100%, the gain reaches maximum.
Note: CH9~CH12 are not marked on the diagram.
CH9 Edit — Setting CH9 at Weight 50 and offsetting 50, the assigned pot/slider will work normally.
Attentions
CH1~CH8 should be connected to the corresponding servos.
S.Port could be used to update, edit parameter settings via FrSky STK PC tool and connect with telemetry sensors.
FrSky Electronic www.frsky-
Co., Ltd. rc.com
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical
Support: sales4tech@gmail.com
Instruction manual for FrSky R9 STAB OTA
The available flight modes can be assigned to CH10 and CH11 with three-position switches.

Flight mode

Stabilization Automatic level
CH10>M+H CH10>M+H
CH10 (3 pos SW)
(CH10 SW Down) (CH10 SW Down)
M-H<CH11<M+H CH11>M+H
CH11(3 pos SW)
(CH11 SW Mid) (CH11 SW Down)
Delta wing & Flying wing & V-tail
Layout of Delta wing / Flying wing
The available flight modes can be assigned to CH10 with a three-position switch.
Flight mode Stabilization
CH10>M+H
CH10
(CH10 SW Down)
When Delta wing/Flying wing/V-tail is selected, the signal produced by the transmitter should be without active mixes on the channels
related to AIL and ELE. R9 STAB OTA will mix the AIL(CH1) and ELE(CH2) input signal with a fixed mix percentage automatically.
Signals on CH4~CH8 will behave as required by the user.
represents a neutral signal period (1500μs)
M:
represents the time of required signal change to activate the mode (50μs). When the factory settings are selected, the switch position
H:
shown above represents the required modes.
Flight mode:
Off: When the mode is activated, R9 STAB OTA will transmit the received commands produced by the transmitter to the model without
compensating.
Stabilization: When the model is activated, R9 STAB OTA will compensate with external forces (wind) as soon as receiving commands
from the transmitter. This function is used to enhance the stability of the model on three axes (Pitch, Roll, Roll). CH9 could be used to
adjust gyro gain by assigning a knob or a slider, changing the sensitivity of the counteracting signal produced by the internal three-asis
gyroscope.
Automatic level: When the mode is activated, R9 STAB OTA will make the model return to level orientation with internal three-axis
accelerometer and three-axis gyroscope on AIL and ELE channels after the sticks being released to neutral. RUD channel works in
stabilization mode only.
Hover: When the mode is activated, R9 STAB OTA will make the nose of the model straight up with internal three-axis accelerometer
and three-axis gyroscope on RUD and ELE channels (ELE and RUD inputs are not required). Under this mode, AIL is used to control
the rotation of the model and THR adjust the altitude. AIL channel works in stabilization mode only.
Knife-egde mode: When the mode is activated, R9 STAB OTA will roll the plane on a certain side (wing points up) with internal
three-axis accelerometer and three-axis gyroscope on RUD and AIL channels.Thus, AIL inputs are not required. While the mode
steering is done with ELE, altitude will be maintained with THR/RUD. ELE channel operates in stabilization mode only.
Configuration
Methods: APP configuration

FrSky radio configuration

PC configuration software (FrSky STK usb updater)
Configuration parameters: Wing type, mounting type, gain setting, offset angle setting, accelerometer calibration.
FrSky Electronic Co., Ltd. www.frsky-rc.com
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical Support:
sales4tech@gmail.com
Blue LED State (Self-check)
exceeding limits [0.9G, 1.1G]
ON in process
within limits [0.9G, 1.1G] OFF completing
completing
•
Operating Range: Full Range
•
Measuring Range of Gyroscope: ±2000dps
•
Measuring Range of Accelerometer: ±4g
•
Firmware Upgradeable
•
Compatibility: R9M 2019/R9M Lite/R9M lite Pro with ACCESS firmware
•
Low Battery voltage detection supported
•
Detachable Ipex1 connector antenna
•
Multiple configuration methods (Lua script and FreeLink)
Number of Corresponding parts
Full name
channel on the model
CH7 User-defined
CH8 User-defined
Gyro gain adjustment
CH9 No mark
Flight modes
CH10&CH11 No mark
Self-Check activation switch
CH12
Contact us : frsky@frsky-
rc.com
Hover Knife-Edge
CH10>M+H CH10<M-H
(CH10 SW Down) (CH10 SW Up)
CH10 SW-mid
CH11<M-H M-H<CH11<M+H
(CH11 SW Up) (CH11 SW Mid)
Layout of V-tail
Auto Level Off
CH10<M-H
CH10 SW-mid
(CH10 SW Up)
Contact us : frsky@frsky-rc.com
Registration & Automatic binding (Smart Match
With the FrSky ACCESS protocol, the transmitter/transmitter module can bind receiver without using the button.
Follow the step below to finish the Registration & binding procedure:
1. Put the transmitter/transmitter module into [Reg] status.
1.1 For Taranis X-Lite Pro and R9M Lite Pro as an example, turn on the transmitter, go to the MENU-MODEL SETUP-PAGE 2, choose
External RF-Mode R9MLP ACCESS, then select [Reg].
2. Connect the battery to the receiver while holding the button on the receiver. The RED LED and GREEN LED on the receiver will be
on, indicating into the [Reg] status. Select [ENTER] on the transmitter, The RED LED and GREEN LED on the receiver will flash, and
the transmitter displays [Registration ok].
3. Turn off the receiver.
4. Move the cursor to select the receiver 1 [Bind].
5. Connect the battery to the receiver, the GREEN LED on the receiver will be on, indicating into the [Bind] status. Select the RX, and
the transmitter displays [Bind successful].
6. The transmitter exit [Bind], GREEN LED will flash, RED LED will be off, indicating working normally.
Set up your model and receiver step by step
You need complete calibration of Accelerometer about the six positions via the R9 STAB OTA.Lua/FreeLink APP/FreeLink.exe firstly.
Step1: Connect your servos follow the channel list according to your model.
Step2: Set you radio follow the channel list.
Step3: Choose the Wing Type via the configuration tool (R9 STAB OTA.Lua/FreeLink APP/FreeLink.exe).
Step4: Choose the AUTO LEVEL mode, check the model servo feedback.
Step5: Choose the manual mode, check servo feedback via transmitter.

Quick Mode

It supports stabilization mode and manual (six-axis off) mode and configured through CH10. What's more, an urgent mode is added to
configure automatic level mode default through CH12. The precise configuration is written below.
Channel Position
SW Down
CH10
SW Mid
SW Up
CH12 SW Down
Note: The default mode of R9 STAB OTA is Quick Mode.When re-flashing firmware of R9 STAB OTA or replacing with a
new one, the preset mode will be cleared out.
- If Quick mode is applied, there is no Knife Edge or (3D) Hover mode.
- CH11 is not used when using Quick Mode.

Modes

Conventional Model
The model types could be enabled via R9 STAB OTA.Config or R9 STAB OTA.Lua. If required,
standard 8 channel R9 series receiver.
Conventional model
FrSky Electronic Co., Ltd.
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical Support:
sales4tech@gmail.com
APP(IOS/Android) configuration：
•
Connect the R9 STAB OTA to the App with AirLink S.
Off
The menu screen on the home page is displayed below:
FrSky radio configuration:
•
Copy the R9 STAB OTA.Lua files on the SD card of the transmitter
•
Bind the R9 STAB OTA to the transmitter and run the files.

PC configuration software:

•
Connect R9 STAB OTA as shown below to the FrSky STK usb adapter, and plug it into PC
•
Run the R9 STAB OTA Freelink.exe and access the home page.
•
Press open to connect with R9 STAB OTA.
The menu screen on the home page is displayed below:
Open
1. Open: Gives the PC software access to
2. Read: Retrieves the stored
3. Write: Stores the setted data on
4. Load: restore the settings into the file you saved before.
5. Save: save all settings to one file.
6. Default: Returns all PC software settings to the factory defaults.
Configuration parameters
The configuration parameters are listed on the top of the interface: Wing type, Mounting Type, Gain Setting, Offset Angle Setting,
Accelerometer Calibration
FrSky Electronic Co., Ltd.
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical Support:
sales4tech@gmail.com
Instruction manual for FrSky R9 STAB OTA
TM )
Flight Mode
None
Stabilization Mode
Automatical Level Mode
Urgent Mode (Automatic Level Mode)
Stabilization
Delta Wing
Automatic level
stabilization
Flying Wing
automatic level
Hover
V-tail
Knife-edge
Layout
www.frsky-rc.com Contact us : frsky@frsky-rc.com
Instruction manual for FrSky R9 STAB OTA
You can download the APP.
IOS FreeLink APP
R9 STAB OTA configuration data.
R9 STAB OTA data to be edited in the PC software.
R9 STAB OTA.
www.frsky-rc.com Contact us : frsky@frsky-rc.com
R9 STAB OTA could be used as a
Android FreeLink APP