SIYI MK15 User manual

MK15 User Manual V1.4
1
2023 SIYI Technology Copyright
MK15
MINI HANDHELD
GROUND STATION
USER MANUAL
V1.4
Sep 2023

MK15 User Manual V1.4
2
2023 SIYI Technology Copyright
Thank you for purchasing SIYI product.
MK15 Enterprise Edition is a mini handheld ground station with a communication
distance of up to 15 kilometers, which is based on SIYI Technology's fully
independently developed low-latency wireless high-definition image transmission
technology and is deeply integrated and optimized with Qualcomm's eight-core
CPU chip platform. It has rich functions and powerful performance, and can also be
purchased with dual operator, remote control relay and other features. Its abundant
interfaces and strong scalability can be widely used in fields such as drones,
unmanned vehicles and ships, and intelligent robots.
MK15 Agriculture Edition is a smart remote controller with screen, equipped with
low-latency wireless high-definition image transmission technology and Qualcomm
eight-core CPU chip platform. The communication distance is deeply optimized for
low-altitude scenes unique to agriculture operations. MK15 carries a 1080p high-
definition bright display, which is powerful, stable, and reliable. It is compatible with
the A2 mini ultra-wide-angle FPV gimbal or the IP67 waterproof camera exclusive
for agriculture drones and is suitable for popular drone frames and flight controllers
in the market. MK15 leads the trend and is a wise choice for agriculture operations.
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

MK15 User Manual V1.4
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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 (suppor[email protected]).
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)

MK15 User Manual V1.4
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User Manual Update Log
Version
Date
Updates
1.4
2023.9
1. Necessary update for product introduction.
2. Necessary update for SIYI FPV app.
3. User manual update log.
4. Main firmware update log.
5. SIYI FPV app update log.
6. Necessary update for technical specification.
7. Necessary update for packing list.
8. Necessary update for “Important Instructions on Promotion to
Communication Range and Video Fluency”.
9. Necessary update for “SIYI TX App”.
10. Instruction in “Datalink” for connection to multiple GCS.

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CONTENT
READ TIPS.................................................................................................................................................................1
Icons.........................................................................................................................................................................1
Safety.......................................................................................................................................................................1
Battery .....................................................................................................................................................................3
Storage / Carrying / Recycling.............................................................................................................................4
1 INTRODUCTION....................................................................................................................................................5
1.1 Product Features.............................................................................................................................................5
1.2 Parts..................................................................................................................................................................8
1.2.1 At a Glance...............................................................................................................................................8
1.2.2 Button / Switch Types and Default Channel Definitions ..................................................................10
1.2.3 Ports and Data Stream..........................................................................................................................11
1.3 Technical Specification.................................................................................................................................14
1.4 Packing List....................................................................................................................................................19
1.5 Status Indicator Definition............................................................................................................................22
1.5.1 Transmitter Indicator..............................................................................................................................22
1.5.2 Air Unit Indicator.....................................................................................................................................23
2 GET READY TO USE..........................................................................................................................................25
2.1 Remote Controller.........................................................................................................................................25
2.1.1 Power On / Off........................................................................................................................................25
2.1.2 Charging..................................................................................................................................................26
2.1.3 Charging Indicator..................................................................................................................................26
2.1.4 Change System Language...................................................................................................................27
2.2 Important Instructions on Promotion to Communication Range and Video Fluency..........................31
2.2.1 General Precautions..............................................................................................................................31
2.2.2 General Antenna Options and Wireless Mode Configuration for Different Range......................32
2.2.3 How to Place the Standard Omni Antennas on Ground Unit..........................................................33
2.2.4 How to Place the Long-Range Patch Antennas on Ground Unit....................................................34
2.2.5 How to Place Air Unit Antennas...........................................................................................................34
2.2.6 The Communication Range Is Not as Expected and You Need Factory Support, Here Are the
Necessary Information We Need...................................................................................................................38
3 SIYI TX APP..........................................................................................................................................................40

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3.1 Channels.........................................................................................................................................................40
3.1.1 End Point.................................................................................................................................................41
3.1.2 Middle Point............................................................................................................................................42
3.1.3 Channel Reverse...................................................................................................................................42
3.1.4 Channel Mapping...................................................................................................................................43
3.2 Datalink...........................................................................................................................................................44
3.2.1 Connection..............................................................................................................................................44
3.2.2 Flight Controller......................................................................................................................................45
3.2.3 Baud Rate...............................................................................................................................................46
3.3 System............................................................................................................................................................48
3.3.1 Bind..........................................................................................................................................................49
3.3.2 Multiple Air Unit......................................................................................................................................49
3.3.3 Frequency Self-Adapting......................................................................................................................50
3.3.4 Throttle Stick...........................................................................................................................................51
3.3.5 Channel 15..............................................................................................................................................51
3.3.5 Wireless Mode........................................................................................................................................51
3.3.7 Joystick Deadzone.................................................................................................................................52
3.4 Link Status......................................................................................................................................................53
3.5 Failsafe ...........................................................................................................................................................54
3.6 Buttons / Dials................................................................................................................................................57
3.6.1 Buttons.....................................................................................................................................................57
3.6.2 Dials.........................................................................................................................................................58
3.7 Joystick Calibration.......................................................................................................................................59
3.8 Dial Calibration ..............................................................................................................................................62
3.9 Multiple Links.................................................................................................................................................65
3.9.1 Remote Control Relay...........................................................................................................................66
3.9.2 Dual Operator.........................................................................................................................................67
3.10 Device Info...................................................................................................................................................70
3.11 SIYI TX App Update Log............................................................................................................................71
4 DATALINK.............................................................................................................................................................72
4.1 Communication with Android GCS through UART..................................................................................72
4.2 Communication with Android GCS through USB COM...........................................................................76

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4.3 Communication with Android GCS via Bluetooth.....................................................................................79
4.4 Communication with Android GCS through UDP.....................................................................................83
4.5 Communication with Windows GCS through Upgrade Port...................................................................87
4.6 Communication with Windows GCS by UDP through Remote Controller WiFi Hotspot....................91
4.7 Solutions to Disconnection ..........................................................................................................................95
4.8 SIYI Datalink SDK.........................................................................................................................................97
5 SIYI FPV APP.....................................................................................................................................................104
5.1 Settings.........................................................................................................................................................106
5.2 Link Status....................................................................................................................................................107
5.3 Gimbal Camera............................................................................................................................................108
5.4 About SIYI FPV............................................................................................................................................110
5.5 SIYI FPV App Update Log.........................................................................................................................111
6 IMAGE TRANSMISSION ..................................................................................................................................112
6.1 Control Gimbal Camera from SIYI FPV App or SIYI QGC App on SIYI Handheld Ground Station
..............................................................................................................................................................................112
6.1.1 Preparation............................................................................................................................................112
6.1.2 Gimbal Pitch and Yaw Rotation.........................................................................................................114
6.1.3 Zoom......................................................................................................................................................115
6.1.4 Take pictures and Record Video.......................................................................................................115
6.2 Input Third-Party IP Cameras / Optical Pods..........................................................................................115
6.3 Input HDMI Camera....................................................................................................................................116
6.4 Input Dual-Channel Video Streams..........................................................................................................117
6.4.1 Input Dual SIYI Cameras / Gimbals / Air Unit HDMI Input Converters........................................117
6.4.2 Input Dual Third-Party IP Cameras / Optical Pods.........................................................................117
6.4.3 Input an SIYI HDMI Converter and a Third-Party IP Camera.......................................................118
6.5 Common IP Addresses ..............................................................................................................................119
6.6 Solutions to No Image................................................................................................................................120
6.7 Output Video Stream from Remote Controller........................................................................................122
6.7.1 Through HDMI......................................................................................................................................122
6.7.2 Through WiFi Hotspot .........................................................................................................................122
7 ANDROID OS......................................................................................................................................................124
7.1 Download Apps............................................................................................................................................124
7.2 Import and Install App.................................................................................................................................124

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7.2.1 Through TF Card..................................................................................................................................124
7.2.2 Through USB Disk...............................................................................................................................124
7.2.3 Through Type-C File Transfer............................................................................................................125
7.3 Check Android Firmware Version.............................................................................................................128
8 SIYI Assistant......................................................................................................................................................129
8.1 Firmware Update.........................................................................................................................................130
8.2 Main Firmware Update Log.......................................................................................................................133
8.3 SIYI Assistant Update Log.........................................................................................................................134
9 After-sale Service...............................................................................................................................................135
9.1 Repair Service.............................................................................................................................................135
9.2 Warranty.......................................................................................................................................................136
9.2.1 7-Day Return & Refund.......................................................................................................................136
9.2.2 15-Day Replacement...........................................................................................................................137
9.2.3 1-Year Warranty Repair......................................................................................................................139
10 FCC STATEMENT...........................................................................................................................................141

MK15 User Manual V1.4
1 2023 SIYI Technology, All Rights Reserved
READ TIPS
Icons
Please pay more attention to content indicated with the following marks:
DANGER Dangerous manipulation probably leads to personal injuries.
WARNING Warnings on manipulation possibly leads to personal injuries.
CAUTION Cautions on what manipulation may lead to economic losses.
Prohibited Mandatory Mark
Safety
MK15 mini handheld ground station is designed and manufactured for professional
application scenarios. Operators need to have certain basic skills, so please use it
with caution. SIYI Technology does not assume any responsibility for any
unnecessary product damage caused by irregular or irresponsible operation of this
product, economic losses or even personal injury to the user or others. Minors must
have professionals present to supervise and guide minors when using this product.
SIYI Technology's products are designed for commercial use, and it is prohibited to
use SIYI products for military purposes. It is prohibited to disassemble or modify
this product without SIYI Technology's permission.

MK15 User Manual V1.4
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To jointly maintain flight safety and allow you to better utilize the features of this
product, please pay special attention to the following matters:
It is prohibited to operate in crowded places (squares, parks, etc.), places with many
obstacles (streets, parking lots, etc.), places with strong magnetic fields or signal
interference sources (high-voltage lines, railway lines, radar stations, etc.) or other places
that may cause using SIYI products to control aircraft, vehicles or models in areas where
unnecessary economic losses or even personal injuries will occur.
During operation, never cover the remote controller antenna or otherwise block signal
transmission.
The top of the standard omni-directional antenna on the remote controller is the part
where signal transmission is weakest. Avoid pointing it at your aircraft, vehicle or model
while working.
It is prohibited to use SIYI products to control aircraft, vehicles, or models when you
are tired, drunk, or unwell.
Without special operation permission, it is prohibited to use SIYI products to control
aircraft, vehicles, or models in rainy days, at night or in strong wind environments.
When the engine or motor on your aircraft, vehicle or model is still running, do not cut
off the power to the remote controller in advance.
For flight safety, please keep the aircraft within sight when operating the aircraft.
When working, be sure to return to the main page from the system parameter setting
page.

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Before starting the operation, be sure to check the power of the remote controller and
the power supply voltage of the air unit.
When finishing the operation, first power off the air unit and then the remote controller.
Before setting the remote controller parameters, be sure to power off the engine and
motor to prevent accidental start.
Before starting the operation, be sure to pre-set the fail-safe function on the remote
control or in the ground station software.
When installing, please avoid installing the air unit and GPS module too close to avoid
interference. It is recommended that the distance between the air unit and the GPS module
be longer than 20 cm.
Battery
MK15 remote controller is equipped with a built-in and chargeable Li-on battery.
Please do read the precautions below before using.
The remote controller cannot be charged when it is powered on. Before charging the
remote control, please turn off the remote control.
If you find that the battery is smoking, overheating, or bulging, please stop using it
immediately.
If you find smoke or a strange smell coming from the remote controller, please stop
using it immediately and contact your reseller or SIYI after-sales service center directly.
If the remote controller overheats (above 60 degrees Celsius), please stop using it
immediately and cut off the power supply.

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Storage / Carrying / Recycling
When the SIYI product you own is idle, or you want to take the SIYI product out for
work, or the product has reached the end of its service life, please pay special
attention to the following matters:
DANGER
When SIYI products are not in use, they should be kept away from areas easily accessible
to children.
Please avoid placing SIYI products in an environment that is too hot (above 60 degrees
Celsius) or too cold (below minus 20 degrees Celsius).
CAUTION
Please avoid placing SIYI products in humid or sandy environments.
When carrying and transporting SIYI products, please avoid operations that may damage
components such as vibration or impact.

MK15 User Manual V1.4
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1 INTRODUCTION
1.1 Product Features
15 KM Wireless Digital Image Transmission
Dual-Channel Full HD Video Stream
The link of MK15 is based on SIYI’s independent wireless HD image transmission
technology, which is an all-in-one link integrated with remote control, datalink, and
video streaming. The technology has a smart feature that the transmission can
automatically adapt to the frequency band with least interference.
*MK15 enterprise edition with standard omni antennas, the transmission range is up to 15
kilometers.
*MK15 enterprise edition with directional antennas, the transmission range is up to 30 kilometers.
*To experience the lowest latency, it is suggested to use MK15 with SIYI FPV app (choosing SIYI
camera protocol) or SIYI QGC app (integrated SIYI camera protocol).
5.5-Inch High-Definition Monitor
1000-Nit High Brightness Display
MK15 remote controller comes with a built-in 7-inch high-definition and high
brightness monitor. Max 1000 nit (cd/m²) of brightness presents high clear screen
display information from ground control software and high-quality images.
Android OS, Superior Performance
MK15 remote controller carries Qualcomm 8-core CPU, which can smoothly decode
1080p 60 fps video stream by hardware in either H264 or H265 format and can
efficiently run various ground control software.

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*MK15 Android platform also comes with full band 4G network and supports streaming HD video
to cloud server by SDK development.
Dual Operator, Efficient Collaboration
Targeting popular industry application fields, relying on wireless high-definition
image transmission technology, SIYI has given the MK15 link the feature of dual
operator.
The "dual operator" function is developed for dual-operator scenarios and supports
up to two ground units to establish links with the same air unit at the same time.
One can be used to control the flight attitude of the drone, and the other can be
used to control the gimbal camera, optical pod, and other payloads. In dual operator
mode, two ground units can simultaneously acquire images from the same camera
source, or display images from different camera sources separately.
*To use the "dual operator" function, you need to purchase a dual combo. Ordinary combos are
not equipped with this function.
Remote Control Relay, Remote Delivery
Targeting the field of drone logistics, relying on wireless high-definition image
transmission technology, SIYI has endowed the MK15 link with the feature of
remote-control relay.
The "remote-control relay" function is developed for ultra-long-distance flight
missions. It supports two ground units to relay control the same air unit to reach a
maximum transmission distance twice that of a single standard transmissionsystem.

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It can be widely used in cruise line inspection, unmanned distribution, unmanned
logistics and other fields.
*To use the"remote-control relay" function, you need to purchase a dual combo. Ordinary combos
are not equipped with this function.
Waterproof FPV Gimbal and FPV Camera
When using MK15 for agriculture operations in complex and harsh environments, it
is recommended to use the A2 mini waterproof ultra-wide-angle FPV gimbal. The
large FOV allows you to have an unobstructed view. The drone can gain insight into
the field conditions without adjusting its attitude during flight, helping the operator
to make quick judgments and ensure work safety.
It can also be equipped with an IP67 waterproof camera with lights, which is not
afraid of erosion and corrosion by chemical liquids, and fundamentally meets the
needs of cleaning and maintenance.
Compatible with Popular Agriculture Flight Controllers and Drone Models
After years of effort in the front-line market, the MK15 handheld ground station has
won the praise of EFT, JIYI, VK-FLY, and BOYING, which are deeply rooted in the
agriculture supply chain, with its excellent performance and reliable stability.
Recognized by other core manufacturers, and deeply integrated and adapted with
their major products, it allows users to get started faster, adapt and maintain more
conveniently, and jointly build a complete ecosystem focusing on the long-term
development and progress of the industry!

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1.2 Parts
1.2.1 At a Glance
Overview – Remote Controller Front

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Overview – Remote Controller Back

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1.2.2 Button / Switch Types and Default Channel Definitions
MK15 remote controller comes with 13 physical channels and 16 communication
channels in total. Communication channel 10 to 14 are also PWM channel 1 to 5
in default.
Channel
No.
Physical Channel Type
Default Mapping
Remark
1
Aileron
Joystick J1
2
Elevator (Mode 2)
Joystick J2
3
Throttle (Mode 2)
Joystick J3
4
Rudder
Joystick J4
5
3-Stage Switch SA
6
3-Stage Switch SB
7
3-Stage Switch SC
8
Button A
9
Button B
10
Button C
PWM 1
11
Button D
PWM 2
12
Left Dial LD
PWM 3
13
Right Dial RD
PWM 4
14
PWM 5
15
Searchlight A
Gimbal Pitch
16
Searchlight B
Gimbal Centering

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1.2.3 Ports and Data Stream
Ports on Remote Controller

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Remote Controller Data Stream
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