SIYI A2mini User manual

A2 mini User Manual V1.1
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2023 SIYI Technology Copyright
A2 mini
ULTRA WIDE ANGLE
FPV GIMBAL
USER MANUAL
V1.1
June 2023

A2 mini User Manual V1.1
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2023 SIYI Technology Copyright
Thank you for purchasing SIYI product.
A2 mini is a lightweight and ultra-wide-angle FPV gimbal, built with industrial
protection class, the 160-degree horizontal FOV makes camera view wide and
broad. Pitch angle control can be widely used for agriculture spraying drones.
Ethernet output can be used with some third-party links. Upside-down mode
makes it also a great option for UGV, USV, robotics, RC hobby planes.
To ensure you a good experience of the product, please read this manual carefully.
If you encounter any issue using the product, please consult the manual or check
the online pages of this product on SIYI official store (https://shop.siyi.biz). You can
also write an email to SIYI official A/S center ([email protected]).

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SIYI User Group - Facebook
SIYI Official Store (https://shop.siyi.biz)
SIYI Official AliExpress Store (https://siyi.aliexpress.com)
SIYI YouTube Channel (https://www.youtube.com/c/SIYITech)

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CONTENT
READ TIPS ....................................................................................................................................................1
Icons .......................................................................................................................................................... 1
Safety .........................................................................................................................................................1
Storage/Carrying/Recycling .......................................................................................................................2
1 INTRODUCTION ........................................................................................................................................3
1.1 Product Features .................................................................................................................................3
1.2 Parts .....................................................................................................................................................5
1.2.1 At a Glance ................................................................................................................................... 5
1.2.2 Connector and Pinouts ................................................................................................................. 6
1.3 Technical Specification ........................................................................................................................7
1.4 Packing List ......................................................................................................................................... 8
2 GET READY TO USE A2 MINI ..................................................................................................................9
2.1 Installation ............................................................................................................................................9
3 GIMBAL CONTROL ................................................................................................................................. 10
3.1 Control through SIYI FPV App or SIYI QGC App on SIYI Handheld Ground Station ......................10
3.1.1 Preparation ................................................................................................................................. 10
3.1.2 Gimbal Pitch Rotation.................................................................................................................12
3.2 Control through PWM / S.Bus Signal (Taking an Example of MK15) .............................................. 12
3.2.1 Preparation ................................................................................................................................. 12
3.3 Ethernet SDK Protocol Control ......................................................................................................... 16
3.3.1 SDK Protocol Format ..................................................................................................................16
3.3.2 SDK Communication Commands ...............................................................................................16
3.3.3 SDK Communication Interface ................................................................................................... 26
3.3.4 SIYI Gimbal Camera SDK Communication Code Examples .....................................................26
3.3.5 SDK CRC16 Code ......................................................................................................................28
3.3.6 Advanced Guide for SIYI Gimbal SDK Integration .................................................................... 30
3.4 Control in SIYI QGC Windows Software through HM30 Image Transmission System ................... 33
3.4.1 Preparation ................................................................................................................................. 34
3.4.2 Gimbal Pitch Rotation.................................................................................................................36
4 VIDEO OUTPUT ...................................................................................................................................... 36
4.1 Output and Display Video Stream on SIYI Ground Station ..............................................................37

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4.2 Output Video Stream to Android Device through HM30 Full HD Image Transmission System ...... 37
4.3 Output Video Stream to Windows Device through HM30 Full HD Image Transmission System ....39
4.4 Output to Third-Party Links ............................................................................................................... 39
4.5 Solutions to No Image ....................................................................................................................... 40
4.5.1 Video Output to Android Device .................................................................................................41
4.5.2 Video Output to Windows Device ...............................................................................................42
4.6 Common IP Addresses ..................................................................................................................... 44
5 SIYI FPV APP .......................................................................................................................................... 45
5.1 Settings ..............................................................................................................................................47
5.2 Link Status .........................................................................................................................................48
5.3 Gimbal Camera ................................................................................................................................. 49
5.4 About SIYI FPV ................................................................................................................................. 52
6 After-sale Service .....................................................................................................................................53
6.1 Repair Service ................................................................................................................................... 53
6.2 Warranty ............................................................................................................................................ 54
6.2.1 7-Day Return & Refund .............................................................................................................. 54
6.2.2 15-Day Replacement ..................................................................................................................55
6.2.3 1-Year Warranty Repair ..............................................................................................................57

A2 mini User Manual V1.1
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2023 SIYI Technology Co., Ltd, All Rights Reserved
READ TIPS
Icons
Please pay more attention to content indicated with the following marks:
DANGER Dangerous manipulation probably leads to human injuries.
WARNING Warnings on manipulation possibly leads to human injuries.
CAUTION Cautions on what manipulation may lead to property loss.
Prohibited Mandatory Mark
Safety
A2 mini FPV gimbal is designed for professional application in specific scenes,
which has been done necessary configuration before delivery, it is forbidden to
disassemble the gimbal or to change its mechanical structure. And don’t add more
payload to the gimbal other than its own camera. Gimbal camera is designed with
very precise structure, users who approach to the equipment should have the
basic knowledge of how to operate it. Irregular or irresponsible manipulations to
the device may cause damage, property loss, or human injuries, and SIYI
Technology is not obliged to any of the damage, loss, or injury. It is prohibited to
use SIYI products for military purpose. Users under 14 years’ old should follow an

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experienced trainer’s guide. Disassembling or modification to the system is
prohibited without permission from its manufacturer, SIYI Technology.
Storage/Carrying/Recycling
When your SIYI products are stand idle, or you are bringing it outdoors, or the
system reached service life, then please do read the precautions below.
CAUTION
Always place your SIYI products at places where babies or kids do not reach.
DANGER
SIYI products should be placed in places with below conditions:
Not too hot (above 60℃) or too cold (under -20℃).
Not under direct sunshine or too dusty or too wet.
Not on an unstable holder which lacks solid supports or may cause vibration.
Not nearby steam or other heat sources.

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1 INTRODUCTION
1.1 Product Features
Ultra-Wide Angle FOV, Distortion Correction
A2 mini comes with a horizontal 160-degree ultra-wide-angle lens, providing an
extensive view of the operation field that operator has clear sight during flight
without adjusting drone attitude too much. Quick decisions can be made to ensure
security to drone operation.
Powerful distortion correction algorithm makes A2 mini’s image smooth and
natural.
*SIYI FPV app is suggested for checking FPV image and SDK is available for developers and
manufacturers.
1080P Full HD Starlight FPV
A2 mini FPV gimbal’s ultra-sensitive starlight CMOS can keep image bright even in
low light environment.
Upside Down Mode
A2 mini FPV gimbal automatically activates upside down mode when it is placed
upside down, very convenient to be mounted on multiple kinds of vehicles like UGV,
USV, robot dog, and robotics.
Gimbal Stabilizing Control Algorithms

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A2 mini FPV gimbal is applied with industry-level stabilizing technology and
high-precision FOC control algorithms. Operator can control the tilt angle.

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1.2 Parts
1.2.1 At a Glance

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1.2.2 Connector and Pinouts

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1.3 Technical Specification
Overall
Video Output Port
Ethernet
Control Signal Input Port
S.Bus, PWM, Ethernet UDP
Working Voltage
12 V
Power Consumption
Average 2 W
Summit 12 W
Working Temperature
-10 ~ 50 ℃
Dimension
65*43*50 mm
Weight
85 g
Gimbal
Controllable Pitch Angle
-90° ~ 25°
Camera
FOV
Horizontal 160°
Image Sensor
1/2.7-inch, 2 MP effective resolution

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1.4 Packing List
1 x A2 mini FPV Gimbal
1 x A8 mini Screw Pack
(Using with the fixing board to mount the gimbal, including 6 x Hex Socket Cap Screw M2.5*5, 10
x Cross Recessed Flat Head Screw M2.5*10, 8 x M2.5 Nut Black)
1 x A8 mini Mounting Board & Damper Pack
(For mounting and fixing gimbal and stabilization)

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2 GET READY TO USE A2 MINI
2.1 Installation
Screw Holes’ Position and Distance
Mark
The specs of the screws for fixing the four tube screws are M.25*8 mm. Quantity: 4.
Welcome to contact SIYI to get the SIYI Gimbal 3D Model for pre-installation.

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2023 SIYI Technology Co., Ltd, All Rights Reserved
3 GIMBAL CONTROL
A2 mini gimbal can be controlled in multiple ways.
3.1 Control through SIYI FPV App or SIYI QGC App on SIYI
Handheld Ground Station
Gimbal connects to air unit directly to control gimbal rotation, gimbal functions, and
video display in SIYI FPV app or SIYI QGC app when the air unit is communicating
with the ground station.
3.1.1 Preparation
It is necessary to prepare the tools, firmware, and software below before
controlling gimbal camera in this way.
SIYI Handheld Ground Station (MK32 Standard Combo / MK15 Enterprise
Standard Combo is suggested for excellent compatibility with SIYI gimbal
cameras)
A2 mini FPV Gimbal
Mark
Above products can be purchased from SIYI directly or from SIYI authorized dealers.

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SIYI FPV App (v2.5.12.572 or latest version)
SIYI QGC App
Mark
Above software can be downloaded from relevant product page on SIYI official website.
SIYI FPV App Steps
1. Power air unit and bind it with ground station.
2. Connect the air unit’s Ethernet port to the gimbal.
3. Update SIYI FPV app to the latest.
4. Run SIYI FPV app, go to “Settings” and select the relevant SIYI camera type
with main / sub stream, video stream will display. Gimbal motion and camera
functions can be controlled by ground station touchscreen.
SIYI QGC App Steps
1. Power air unit and bind it with ground station.
2. Connect the air unit’s Ethernet port to the gimbal.
3. Run SIYI QGC app, go to “Comm Links – Video Settings”, and select “RTSP
Video Stream” for “Source”, then enter the default RTSP addresses of SIYI
gimbal camera, video stream will display. Gimbal motion and camera functions
can be controlled by ground station touchscreen.

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3.1.2 Gimbal Pitch Rotation
While SIYI FPV App or SIYI QGC app is running,
Sliding on touchscreen can control gimbal rotation. Sliding up and down is gimbal
pitch rotation.
Double tap touchscreen, gimbal will automatically center.
Mark
Slide on touchscreen and hold it, gimbal will continue rotating till it reaches physical limit.
Farther that you hold it from the center of the screen, faster the gimbal rotates.
3.2 Control through PWM / S.Bus Signal (Taking an Example of
MK15)
PWM signal is already connected when A2 mini gimbal is connected to air unit
Ethernet port. S.Bus signal is an optional connection to air unit S.Bus port. Both
ways are for gimbal control through joysticks / dials / switches / buttons on MK15
remote controller when it is communicating to the air unit.
3.2.1 Preparation
It is necessary to prepare the below tools, firmware, and software before

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controlling gimbal camera in this way.
MK15 Mini HD Smart Controller (MK15 Agriculture x A2 Mini FPV Combo or
MK15 Enterprise Standard Combo is suggested for excellent compatibility with
SIYI gimbals)
A2 mini FPV Gimbal
Mark
Above products can be purchased from SIYI directly or from SIYI authorized dealers.
SIYI TX App (v1.1.235 or latest version)
Mark
Above app can be downloaded from relevant product page on SIYI official website.
Steps for PWM Control
1. Power the air unit and bind it with the remote controller.
2. Connect A2 mini gimbal to the air unit’s Ethernet port.
3. Run SIYI TX app on the remote controller.
4. Go to “System Settings – Channel 15” and switch the control of channel 15 to
the gimbal for pitch control of A2 mini gimbal.

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5. Go to “Channel Settings” and assign a joystick, a dial, a switch, or a button to
channel 15.
6. For the assigned channel, operate the relevant joystick, dial, switch, or button to
confirm if it is working normally.
Steps for SBUS Control
1. Power the air unit and bind it with the remote controller.
2. Connect A2 mini gimbal to the air unit’s Ethernet port.

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3. Run SIYI TX app on the remote controller.
4. Go to “Channel Settings” and assign a joystick, a dial, a switch, or a button to
channel 15.
5. For the assigned channel, operate the relevant joystick, dial, switch, or button to
confirm if it is working normally.