Page 1 MK15 User Manual V1.4 MK15 MINI HANDHELD GROUND STATION USER MANUAL V1.4 Sep 2023 2023 SIYI Technology Copyright...
Page 2 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.
Page 3 MK15 User Manual V1.4 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 (support@siyi.biz). 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)
Page 4 User Manual Update Log Version Date Updates 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. 2023.9 6. Necessary update for technical specification.
Page 5: Table Of Contents
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 2023 SIYI Technology Copyright...
Page 6 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...
Page 7 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 ......................
Page 8 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 &...
Page 9: Read Tips
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.
Page 10 (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.
Page 11: Battery
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.
Page 12: Storage / Carrying / Recycling
MK15 User Manual V1.4 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...
Page 13: Introduction
*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).
Page 14 MK15 User Manual V1.4 *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.
Page 15 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.
Page 18: Button / Switch Types And Default Channel Definitions
MK15 User Manual V1.4 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.
Page 22: Technical Specification
5.5-inch 1080p High Definition and High Brightness LCD Monitor Touchscreen Android 9.0 OS System 2G RAM, 16G ROM 10200 mAh 7.4V 2S Li-ion Battery Capacity & Type 75.48 Wh Fast Charging Protocol PD 20W Charging Time 5 hours (PD 20W) 2023 SIYI Technology, All Rights Reserved...
Page 23 MK15 Air Unit (included in MK15 agriculture edition): 4S ~ 18S / 16.8 ~ 75.6 V (Early manufacturing lots support only 6S to 14S, please carefully confirm) HM30 Air Unit (included in MK15 enterprise edition and Working Voltage MK32): 3S ~ 6S / 12.6 ~ 25.2 V...
Page 24 MK15 User Manual V1.4 4S to 18S Power Module (included in MK15 enterprise edition and MK32): 16.8 ~ 75.6 V MK15 Air Unit (included in agriculture edition): Average: 3.2 W Summit: 12 W HM30 Air Unit: Power Consumption Average: 2.8 W...
Page 25 42 x 41 x 11 mm Weight 26 g Working Temperature -10℃ ~ 50℃ R1M Recording FPV Camera (Optional) Video Output Ethernet Image Sensor 1/2.9 Inch, 2 MP Diagonal: 90° Horizontal: 80° Working Voltage 12 V 2023 SIYI Technology, All Rights Reserved...
Page 26 12 Mbps Video Recording Format Supported TF / SD Card MicroSD Class10 Less than 32GB Type File Storage Format FAT32 Dimensions 42 x 42 x 25 mm Weight 23 g -10℃ ~ 50℃ Working Temperature 2023 SIYI Technology, All Rights Reserved...
Page 27: Packing List
Agriculture flight controllers like BOYING, JIYI, and VK need special telemetry cable. BOYING and VK flight controllers also need special S.Bus cable. Please do instruct your reseller or your SIYI sales representative before purchasing. 2023 SIYI Technology, All Rights Reserved...
Page 28 MK15 User Manual V1.4 Enterprise Edition Enterprise Standard Combo Enterprise HDMI Combo 1 x MK15 Enterprise Ground Unit 2 x Standard Omni Antenna 2 x Long Range Antenna 1 x HM30 Air Unit 1 x 4S to 18S Power Module...
Page 29 MK15 User Manual V1.4 Dual Edition Dual Combo 2 x MK15 Enterprise Ground Unit (Dual Edition) 4 x Standard Omni Antenna 4 x Long Range Antenna 2 x HM30 Air Unit (Dual Edition) 2 x 4S to 18S Power Module...
Page 30: Status Indicator Definition
Slow Red Blinks: Firmware does not match. Triple Red Blinks: Image transmission initialization failed. Four-time Red Blinks: Transmitter requires calibration. Red-Green-Red-Green-Red Blinks: Unexpected power off of MK15 Android system. Slow Yellow Blinks: Transmitter power voltage abnormal. Double Yellow Blinks: Transmitter Bluetooth is not identified.
Page 31: Air Unit Indicator
Yellow Blinks: Low voltage alert (voltage input from PMU is lower than 12V). Solid Green: Perfect communication, 100% data package received. Green Blinks: Blinking speed indicates MK15 system’s signal strength. The faster it blinks, the worse the signal is. Slow Green Blinks: 95% to 99% data package received.
Page 32 Green-Red Blinks: Air Unit high-temperature alert, level two. Green-Red Blinks: Air Unit high-temperature alert, level three. Fast Green-Red-Green-Red-Green-Red Blinks: Wireless binding is starting (activated by power on/off three times). Slow Red-Green-Yellow Blinks: Image transmission is starting. 2023 SIYI Technology, All Rights Reserved...
Page 33: Get Ready To Use
Screenshot: When the remote controller is working, press and hold the power button for about two seconds, remote controller monitor will pop up a window with some icons. Touch the screenshot icon to make a screenshot of current screen display. 2023 SIYI Technology, All Rights Reserved...
Page 34: Charging
CAUTION Normal 5V charger adapter cannot charge the remote controller, please do use SIYI original PD fast charger. MK15 remote controller cannot be charged when it is working. Please do power off the remote controller before charging. 2.1.3 Charging Indicator Solid Red: Remote controller under charging.
Page 35: Change System Language
MK15 User Manual V1.4 2.1.4 Change System Language MK15 Android system supports almost all available languages, which can be switched in system settings easily. Mark The factory language of MK15 Android system is “Chinese (Simplified)”. Steps 1. Go to Android system settings.
Page 36 3. Go to “Language and Input” and choose “Language”, then “Add Language”. 4. Let’s take an example of “English (US)”. Slide down to find “English”, then choose “United States”. The page will jump back to “Language and Preference”. 2023 SIYI Technology, All Rights Reserved...
Page 37 MK15 User Manual V1.4 5. Drag the just added “English (US)” language bar to the first line, system language will change to English (US) automatically. 2023 SIYI Technology, All Rights Reserved...
Page 39: Important Instructions On Promotion To Communication Range And Video Fluency
MK15 User Manual V1.4 2.2 Important Instructions on Promotion to Communication Range and Video Fluency To have the best communication range and video fluency with MK32 / MK15 system, please carefully read the below tips for antenna options, antenna setup, and link configuration.
Page 40: General Antenna Options And Wireless Mode Configuration For Different Range
Wireless mode: 24 km GCS. 4. The signal at the top of the standard omnidirectional antenna is weak. When flying directly above the ground, the flying height of the aircraft should be as low as 100 meters. 2023 SIYI Technology, All Rights Reserved...
Page 41: How To Place The Standard Omni Antennas On Ground Unit
6. Only the standard omni antennas are suggested for the air unit. If your aircraft is too small to mount the omni antennas, or you worry about the weak signal of the top part, then you can consider using SIYI lollipop antennas. Lollipop antennas performs shorter range than the standard omni antennas.
Page 42: How To Place The Long-Range Patch Antennas On Ground Unit
2. Long-range patch antennas are directional, which should always be pointing to the aircraft during flight. 3. When you are using SIYI standard long-range antennas, please make its short side be parallel with horizon and its long side be vertical of the control panel to get the best signal quality.
Page 43 As shown in the picture below, for small and medium-sized multi-rotor drones, the air unit antenna should be placed downward perpendicular to the arm to keep the flat surface of the antenna facing the direction of the remote controller. 2023 SIYI Technology, All Rights Reserved...
Page 44 As shown in the figure below, for large multi-rotor drones, the air unit antenna should be placed vertically downwards from the motor base to keep the flat surface of the antenna facing the direction of the remote control. 2023 SIYI Technology, All Rights Reserved...
Page 45 As shown in the figure below, for fixed-wing aircraft, the air unit antenna can be placed vertically to the wings or vertical tail upwards and try to keep the flat surface of the antenna facing the direction of the remote controller. 2023 SIYI Technology, All Rights Reserved...
Page 46: The Communication Range Is Not As Expected And You Need Factory Support, Here Are The Necessary Information We Need
3. Flight test environment (pictures or videos taken in the orientation of the flight). 4. Check software information relevant to communication. ⚫ Wireless Mode ⚫ Ground and Air Unit Firmware Version ⚫ SIYI FPV app version 2023 SIYI Technology, All Rights Reserved...
Page 47 6. If all above trouble shooting still didn’t help find the cause to unexpected range, please provide a screenshot of SIYI FPV app with all OSD turned on when the drone is flying closely to the range limit that you have experienced, or provide a screen recorded video of the running SIYI FPV app during the whole flight.
Page 48: Siyi Tx App
MK15 User Manual V1.4 3 SIYI TX APP Users can configure remote controller in “SIYI TX” app. Mark This chapter was made according to “SIYI TX” v1.1.246. 3.1 Channels Channel settings of End Point, Middle Point, Channel Reverse, and Channel Mapping.
Page 49: End Point
MK15 User Manual V1.4 3.1.1 End Point Remote controller’s default end point range is between 1050 and 1950. Select a target channel and input your required maximum or minimum channel value. It’s done. 2023 SIYI Technology, All Rights Reserved...
Page 50: Middle Point
Select a target channel and input your required middle point value. It’s done. 3.1.3 Channel Reverse Channel Reverse is to reverse a channel’s output direction. Select a target channel. Then touch the “Normal” or “Reversed” button. It’s done. 2023 SIYI Technology, All Rights Reserved...
Page 51: Channel Mapping
MK15 User Manual V1.4 3.1.4 Channel Mapping MK15 remote controller has 13 physical channels, an RSSI channel, and 16 communication channels. Users are allowed to define or to map the physical channels (buttons, switches, joysticks) and the RSSI channel to the communication channels freely.
Page 52: Datalink
Baud Rate: The baud rate here must match the baud rate of PX4 / Ardupilot flight controller TELEM port which is used for datalink and configured in GCS. 3.2.1 Connection Available datalink connection types in MK15 remote controller are: UART, USB COM, Bluetooth, Upgrade Port, and UDP. 2023 SIYI Technology, All Rights Reserved...
Page 53: Flight Controller
UART: Telemetry data goes through the built-in UART port in the remote controller. *Compatible with specific Android GCS, such as BOYING, JIYI, and VKFLY. *Developers can acquire SDK from SIYI to use the port for their GCS. USB COM: Telemetry data goes through the built-in CP2102 port in the remote controller.
Page 54: Baud Rate
MK15 User Manual V1.4 Currently supported flight controller models are: SIYI N7 Autopilot, PX4 / Ardupilot Flight Open-source Controllers, JIYI (K3A or K++), BOYING (Paladin), VKFLY (V7AG) agriculture flight controllers, and customized flight controllers. Mark Please make sure that the remote controller has been bound to the air unit before switching flight controller type, otherwise it would fail.
Page 55 MK15 User Manual V1.4 Mark Please make sure that the remote controller has been bound to the air unit before configuring baud rate, otherwise it would fail. 2023 SIYI Technology, All Rights Reserved...
Page 56: System
MK15 User Manual V1.4 3.3 System Configure some important system functions for MK15 system. About System Settings Bind: Check current binding status or start binding process on remote controller. Multiple Air Unit: Remote controller can save up to five bound air units for switching quickly with no need to bind them again.
Page 57: Bind
Please follow the steps below to bind the ground unit to the air unit. 1. In “SIYI TX” application, go to “System” page, then touch “Bind - Start”. 2. Ground unit status indicator will turn to “Red Fast Blinking”. And in “Bind” menu, it displays “Binding”.
Page 58: Frequency Self-Adapting
In strong-interference environment, turn on the function, remote controller will automatically search for the frequency band with least interference to get the best transmission quality. Mark After turning on the function in “SIYI TX”, please restart the remote controller, otherwise it would fail. 2023 SIYI Technology, All Rights Reserved...
Page 59: Throttle Stick
Switch controlling channel 15 to the IP67 camera’s searchlight function or the A2 mini gimbal’s pitch axis rotation. 3.3.5 Wireless Mode SIYI link supports switching wireless communication modes and cooperates with different types and different gain antennas to achieve the conditions most conducive to wireless communication and the ultimate communication distance.
Page 60: Joystick Deadzone
Before configuring wireless modes, please carefully read the chapter 2.2 in this manual “Important Instructions on Promotion to Communication Range and Video Fluency”. 3.3.7 Joystick Deadzone Adjust the joystick dead zone to adapt to various control feels. 2023 SIYI Technology, All Rights Reserved...
Page 61: Link Status
Received Rate: Received percentage of data package which are successfully received by the ground unit per second. Upload: Data uploaded to the air unit per second by bit. Download: Data downloaded from the air unit per second by bit. 2023 SIYI Technology, All Rights Reserved...
Page 62: Failsafe
Please follow the steps below to configure your system with Failsafe function. 1. Make sure that the ground unit is bound to the air unit. 2. Go to “Failsafe” page. 2023 SIYI Technology, All Rights Reserved...
Page 63 “Hold” button to “Custom”. Then input your required channel value for Failsafe. 5. After configuration, the channel would output the value if the air unit lost communication with the ground unit during flight. 2023 SIYI Technology, All Rights Reserved...
Page 64 Failsafe function and switch to RTH, by holding a specific value in a channel). You just configure your GCS with protection measures, because there are Out-of-Control marks in S.Bus protocol which tells the flight controller what situations belong to Out-of-Control. 2023 SIYI Technology, All Rights Reserved...
Page 65: Buttons / Dials
3.6 Buttons / Dials Remote controller supports changing the way that the buttons and the dials work. 3.6.1 Buttons The function changes the way that the four buttons (A, B, C, D) on MK15 transmitter works. About Buttons Lock: After pressing, the button bounces back but the channel will keep outputting 1950.
Page 66: Dials
MK15 User Manual V1.4 Mark Press and hold the button on MK15 remote controller, which means the channel outputs 1050, LED under the button will light on. If the button is under “Lock” status, the LED will be on still until the next pressing. If the button is under “3-Stage” status and is in middle position, the LED will blink.
Page 67: Joystick Calibration
Steps 1. Before calibrating the joysticks, please make sure that both joysticks are naturally standstill, not displaced by any force. 2. In “Joystick Calibration” page, touch “Start”, the page shows as below. 2023 SIYI Technology, All Rights Reserved...
Page 68 4. Calibration of joystick middle points are finished. The next step is to calibrate joystick maximum and minimum positions. Please follow the tips again to push each joystick to its maximum/minimum positions on all four dimensions. Up: 0, 100 2023 SIYI Technology, All Rights Reserved...
Page 69 5. The Joystick Calibration page will turn to its initial page. Joystick calibration is finished. Mark If the joysticks do not stay in middle (coordinates are not (0, 0)) or do not output maximum/minimum value (-100 or 100), you shall calibrate them immediately. 2023 SIYI Technology, All Rights Reserved...
Page 70: Dial Calibration
Steps 1. Before calibrating the dials, please make sure that both dials are naturally standstill, not displaced by any force. 2. In “Dial Calibration” page, touch “Start”, the page shows as below. 2023 SIYI Technology, All Rights Reserved...
Page 71 Please follow the tips again and push each dial to its maximum and minimum position. Then touch “Finish”. 5. Dial Calibration page will return to its initial page. Dial calibration is finished. 2023 SIYI Technology, All Rights Reserved...
Page 72 MK15 User Manual V1.4 Mark If the dials do not stay in middle (coordinates are not 0) or do not output maximum / minimum value (-100 or 100), you shall calibrate them immediately. 2023 SIYI Technology, All Rights Reserved...
Page 73: Multiple Links
“TX-A” and “TX-B” in “Dual Operator” mode. Control Channel: In “Dual Operator” mode, define channel mapping for TX-A and assign channels to TX-B according to your requirement. 2023 SIYI Technology, All Rights Reserved...
Page 74: Remote Control Relay
Steps 1. Prepare two MK15 remote controllers (dual edition). 2. Go to “Multiple Links – Function Type”, assign the two remote controllers as “RC Relay TX-A” and “RC Relay TX-B”.
Page 75: Dual Operator
Steps 1. Prepare two MK15 remote controllers (dual edition). 2. Go to “Multiple Links – Function Type”, assign the two ground units as “Dual RC TX-A” and “Dual RC TX-B”.
Page 76 5. In “Control Channels” page, configure channel mappings for “TX-A”, then assign the decided channels to “TX-B”. Thus, when the Dual RC function is enabled, “TX-A” can authorize to “TX-B” or withdraw from “TX-B” the control of the assigned channels. 2023 SIYI Technology, All Rights Reserved...
Page 78: Device Info
RC FPV Firmware Version: Displays the FPV firmware version of the remote controller. AU FPV Firmware Version: Displays the FPV firmware version of the air unit. Mark The remote controller and air unit FPV firmware are not open for customer upgrade. 2023 SIYI Technology, All Rights Reserved...
Page 79: Siyi Tx App Update Log
MK15 User Manual V1.4 3.11 SIYI TX App Update Log Date 2023-07-18 Version 1.1.240 Updates 1. New (MK32): Support remote controller signal output. Date 2023-07-11 Version 1.1.239 1. Improve: Frequency self-adapting support searching for the best channel. Updates 2. Fix: System settings do not display setting status.
Page 80: Datalink
4.1 Communication with Android GCS through UART 4.1.1 JIYI Agri-Assistant 1. In “SIYI TX” app, go to “Datalink”, and choose “UART” in “Connection”, “JIYI (K3A / K++)” in “Flight Controller”, and “57600” in “Baud Rate”. 2. Run JIYI Agri-Assistant, choose “MK15” as the connection method.
Page 81 SIYI links also support datalink connection to JIYI Agri-Assistant through Bluetooth. 4.1.2 BOYING Agriculture 1. In “SIYI TX” app, go to “Datalink”, and choose “UART” in “Connection”, “BOYING (Paladin)” in “Flight Controller”, and “57600” in “Baud Rate”. 2. Run BOYING agriculture, choose “MK15” as the connection method.
Page 82 SIYI links also support datalink connection to BOYING GCS through Bluetooth. 4.1.3 VK Agriculture 1. In “SIYI TX” app, go to “Datalink”, and choose “UART” in “Connection”, “VK (V7AG / V9AG)” in “Flight Controller”. The baud rate will automatically adapt to “115200”.
Page 83 MK15 User Manual V1.4 2. Run VK GCS, remote controller will communicate with the VK app automatically and shows “device connected”. Datalink connection is established. Mark SIYI links also support datalink connection to BOYING GCS through Bluetooth. 2023 SIYI Technology, All Rights Reserved...
Page 84: Communication With Android Gcs Through Usb Com
4.2 Communication with Android GCS through USB COM 4.2.1 QGroundControl 1. In “SIYI TX” app, go to “Datalink”, and choose “USB COM” in “Connection”, “PIX / PX4 / Ardupilot” in “Flight Controller”, and match the baud rate with the flight controller TELEM port’s.
Page 85 4.2.2 Mission Planner 1. In “SIYI TX” app, go to “Datalink”, and choose “USB COM” in “Connection”, “PIX / PX4 / Ardupilot” in “Flight Controller”, and match the baud rate with the flight controller TELEM port’s.
Page 86 MK15 User Manual V1.4 2. Run Mission Planner, select the relevant port and match the baud rate. 3. Please wait until the datalink connection is established. 2023 SIYI Technology, All Rights Reserved...
Page 87: Communication With Android Gcs Via Bluetooth
4.3 Communication with Android GCS via Bluetooth 4.3.1 QGroundControl 1. In “SIYI TX” app, go to “Datalink”, and choose “Bluetooth” in “Connection”, “PIX / PX4 / Ardupilot” in “Flight Controller”, and match the baud rate with the flight controller TELEM port’s.
Page 88 MK15 User Manual V1.4 5. Touch the Bluetooth device of which the name is starting with “SIYI-XXXXXXX”, then touch “OK” to go back to the Comm Links page. 4. Confirm and start to “Connect”. The top progress bar in QGC starts to move, which means the remote controller is communicate with QGC automatically.
Page 89 “Automatically Connect on Start”. It can be checked later when you confirm that the datalink is connected successfully. 4.3.2 Mission Planner 1. In “SIYI TX” app, go to “Datalink”, and choose “Bluetooth” in “Connection”, “PIX / PX4 / Ardupilot” in “Flight Controller”, and match the baud rate with the flight controller TELEM port’s.
Page 90 MK15 User Manual V1.4 2. Run Mission Planner, select the relevant port (COM-xx Bluetooth) and match the baud rate. 3. Please wait until the datalink connection is established. 2023 SIYI Technology, All Rights Reserved...
Page 91: Communication With Android Gcs Through Udp
4.4 Communication with Android GCS through UDP 4.4.1 QGroundControl 1. In “SIYI TX” app, go to “Datalink”, and choose “UDP” in “Connection”, “PIX / PX4 / Ardupilot” in “Flight Controller”, and match the baud rate with the flight controller TELEM port’s.
Page 92 If it is your first time adding a new connection in QGC, please do not check the option “Automatically Connect on Start”. It can be checked later when you confirm that the datalink is connected successfully. 2023 SIYI Technology, All Rights Reserved...
Page 93 MK15 User Manual V1.4 4.4.2 Mission Planner 1. In “SIYI TX” app, go to “Datalink”, and choose “UDP” in “Connection”, “PIX / PX4 / Ardupilot” in “Flight Controller”, and match the baud rate with the flight controller TELEM port’s. 2. Run Mission Planner, select the relevant port (UDPCl) and match the baud rate.
Page 94 MK15 User Manual V1.4 3. Please wait until the datalink connection is established. Mark To use UDP datalink connection in Mission Planner, the remote controller FPV firmware should be v0.2.4 and above. 2023 SIYI Technology, All Rights Reserved...
Page 95: Communication With Windows Gcs Through Upgrade Port
1. Connect the remote controller’s upgrade port to the Windows computer, the Windows system will generate a communication port for the remote controller. 2. In “SIYI TX” app, go to “Datalink”, and choose “Upgrade Port (MK15) / Type-C (MK32)” in “Connection”, “PIX / PX4 / Ardupilot” in “Flight Controller”, and match the baud rate with the flight controller TELEM port’s.
Page 96 If it is your first time adding a new connection in QGC, please do not check the option “Automatically Connect on Start”. It can be checked later when you confirm that the datalink is connected successfully. 2023 SIYI Technology, All Rights Reserved...
Page 97 1. Connect the remote controller’s upgrade port to the Windows computer, the Windows system will generate a communication port for the remote controller. 2. In “SIYI TX” app, go to “Datalink”, and choose “Upgrade Port (MK15) / Type-C (MK32)” in “Connection”, “PIX / PX4 / Ardupilot” in “Flight Controller”, and match the baud rate with the flight controller TELEM port’s.
Page 99: Communication With Windows Gcs By Udp Through Remote Controller Wifi Hotspot
4.6 Communication with Windows GCS by UDP through Remote Controller WiFi Hotspot 4.6.1 QGroundControl 1. In “SIYI TX” app, go to “Datalink”, and choose “UDP” in “Connection”, “PIX / PX4 / Ardupilot” in “Flight Controller”, and match the baud rate with the flight controller TELEM port’s.
Page 100 5. Confirm and start to “Connect”. The top progress bar in QGC starts to move, which means the remote controller is communicate with QGC automatically. Please wait until the datalink connection is established. Mark 2023 SIYI Technology, All Rights Reserved...
Page 101 “Automatically Connect on Start”. It can be checked later when you confirm that the datalink is connected successfully. 4.4.2 Mission Planner 1. In “SIYI TX” app, go to “Datalink”, and choose “UDP” in “Connection”, “PIX / PX4 / Ardupilot” in “Flight Controller”, and match the baud rate with the flight controller TELEM port’s.
Page 102 MK15 User Manual V1.4 4. Please wait until the datalink connection is established. Mark To use UDP datalink connection in Mission Planner, the remote controller FPV firmware should be v0.2.4 and above. 2023 SIYI Technology, All Rights Reserved...
Page 103: Solutions To Disconnection
⚫ If the TX and RX pins in the flight controller and air unit telemetry port are swapped? 3. In “SIYI TX” app, go to the “Link Status” page to check communication status. When the communication is good, “data download” is not 0. If it is “0”, please go back to check step 1 and 2.
Page 104 MK15 User Manual V1.4 Mark If you have done trouble shooting by following all steps above, but there are still no clues, please contact your reseller or SIYI after-sale service. 2023 SIYI Technology, All Rights Reserved...
Page 105: Siyi Datalink Sdk
MK15 User Manual V1.4 4.8 SIYI Datalink SDK SIYI links can be integrated to customers’ own network or ground station by acquiring SDK communication protocol. 4.8.1 Format Field Index Bytes Description 0x5566: starting mark CTRL 0: need_ack (if the current package need “ack”) 1: ack_pack (if the package is an “ack”...
Page 106 1, 2: Binding 3: Finished Telemetry Baud Rate: 0: BAUD_4800 1: BAUD_9600 2: BAUD_38400 Uint8_t Baud_type 3: BAUD_57600 4: BAUD_76800 5: BAUD_115200 6: BAUD_230400 Joystick Type: Uint8_t Joy_type 0: Mode 1 1: Mode 2 2023 SIYI Technology, All Rights Reserved...
Page 108 Data download: byte/s int32_t txbandwidt Upload bandwidth int32_t (txbandwidth / 1000 Mbps) rxbandwidt Download bandwidth (rxbandwidth / 1000 int32_t Mbps) rssi RF power: dBm int32_t freq Current frequency: Mhz int32_t channel Current Channel int32_t Example: 2023 SIYI Technology, All Rights Reserved...
Page 109 55 66 02 10 00 02 00 47 00 03 05 68 07 02 05 69 02 02 00 56 02 02 00 56 6d 21 4.8.3 Communication Interface SIYI datalink SDK supports four interfaces, which can be switched in SIYI TX app. 1) UART Serial Port...
Page 110 MK15 User Manual V1.4 3) Bluetooth 4) MK15 RC Upgrade Port / MK32 RC Type-C Port (Virtual serial port based on USB port) 4.8.4 SDK CRC16 Check Code const uint16_t crc16_tab[256]; /*********************************************************** CRC16 Coding & Decoding G(X) = X^16+X^12+X^5+1 ***********************************************************/...
Page 111 MK15 User Manual V1.4 0x1231,0x210,0x3273,0x2252,0x52b5,0x4294,0x72f7,0x62d6, 0x9339,0x8318,0xb37b,0xa35a,0xd3bd,0xc39c,0xf3ff,0xe3de, 0x2462,0x3443,0x420,0x1401,0x64e6,0x74c7,0x44a4,0x5485, 0xa56a,0xb54b,0x8528,0x9509,0xe5ee,0xf5cf,0xc5ac,0xd58d, 0x3653,0x2672,0x1611,0x630,0x76d7,0x66f6,0x5695,0x46b4, 0xb75b,0xa77a,0x9719,0x8738,0xf7df,0xe7fe,0xd79d,0xc7bc, 0x48c4,0x58e5,0x6886,0x78a7,0x840,0x1861,0x2802,0x3823, 0xc9cc,0xd9ed,0xe98e,0xf9af,0x8948,0x9969,0xa90a,0xb92b, 0x5af5,0x4ad4,0x7ab7,0x6a96,0x1a71,0xa50,0x3a33,0x2a12, 0xdbfd,0xcbdc,0xfbbf,0xeb9e,0x9b79,0x8b58,0xbb3b,0xab1a, 0x6ca6,0x7c87,0x4ce4,0x5cc5,0x2c22,0x3c03,0xc60,0x1c41, 0xedae,0xfd8f,0xcdec,0xddcd,0xad2a,0xbd0b,0x8d68,0x9d49, 0x7e97,0x6eb6,0x5ed5,0x4ef4,0x3e13,0x2e32,0x1e51,0xe70, 0xff9f,0xefbe,0xdfdd,0xcffc,0xbf1b,0xaf3a,0x9f59,0x8f78, 0x9188,0x81a9,0xb1ca,0xa1eb,0xd10c,0xc12d,0xf14e,0xe16f, 0x1080,0xa1,0x30c2,0x20e3,0x5004,0x4025,0x7046,0x6067, 0x83b9,0x9398,0xa3fb,0xb3da,0xc33d,0xd31c,0xe37f,0xf35e, 0x2b1,0x1290,0x22f3,0x32d2,0x4235,0x5214,0x6277,0x7256, 0xb5ea,0xa5cb,0x95a8,0x8589,0xf56e,0xe54f,0xd52c,0xc50d, 0x34e2,0x24c3,0x14a0,0x481,0x7466,0x6447,0x5424,0x4405, 0xa7db,0xb7fa,0x8799,0x97b8,0xe75f,0xf77e,0xc71d,0xd73c, 0x26d3,0x36f2,0x691,0x16b0,0x6657,0x7676,0x4615,0x5634, 0xd94c,0xc96d,0xf90e,0xe92f,0x99c8,0x89e9,0xb98a,0xa9ab, 0x5844,0x4865,0x7806,0x6827,0x18c0,0x8e1,0x3882,0x28a3, 0xcb7d,0xdb5c,0xeb3f,0xfb1e,0x8bf9,0x9bd8,0xabbb,0xbb9a, 0x4a75,0x5a54,0x6a37,0x7a16,0xaf1,0x1ad0,0x2ab3,0x3a92, 0xfd2e,0xed0f,0xdd6c,0xcd4d,0xbdaa,0xad8b,0x9de8,0x8dc9, 0x7c26,0x6c07,0x5c64,0x4c45,0x3ca2,0x2c83,0x1ce0,0xcc1, 0xef1f,0xff3e,0xcf5d,0xdf7c,0xaf9b,0xbfba,0x8fd9,0x9ff8, 0x6e17,0x7e36,0x4e55,0x5e74,0x2e93,0x3eb2,0xed1,0x1ef0 2023 SIYI Technology, All Rights Reserved...
Page 112: Siyi Fpv App
MK15 User Manual V1.4 5 SIYI FPV APP SIYI FPV is an Android application developed by SIYI to configure many SIYI products for video display, camera stream settings, and communication link status monitoring. Mark This chapter is edited based on SIYI FPV App v2.5.15.660.
Page 114: Settings
IP addresses, custom app interface, and switch video decoding type. About Settings Camera IP: Select between SIYI Camera 1 and SIYI Camera 2, between main stream and sub stream, select or input video stream RTSP addresses, disable image, or rotate the relevant image in 180 degrees.
Page 115: Link Status
OSD: Enable / disable standard OSD information. Mavlink OSD: Enable / disable Mavlink OSD information. Speed Unit: Switch speed unit between meter per seconds and kilometer per hour. Longitude and Latitude: Enable / disable information. 2023 SIYI Technology, All Rights Reserved...
Page 116: Gimbal Camera
MK15 User Manual V1.4 5.3 Gimbal Camera Configure the abundant functions of SIYI optical pod and gimbal camera. About Gimbal Camera Boot Record: Enable / disable automatic video recording by SD card as soon as gimbal camera is powered. File Manager: Preview stored images in TF card. Format the TF card.
Page 117 ⚫ FPV Mode: Gimbal rotates simultaneously as aircraft rolls to get FPV view, and output images with enhanced stability. Camera Firmware Version: Display current camera firmware version. Gimbal Firmware Version: Display current gimbal firmware version. Zoom Firmware Version: Display current gimbal firmware version. 2023 SIYI Technology, All Rights Reserved...
Page 118: About Siyi Fpv
MK15 User Manual V1.4 5.4 About SIYI FPV Displays the software version of SIYI FPV and common contact information of SIYI Technology. 2023 SIYI Technology, All Rights Reserved...
Page 119: Siyi Fpv App Update Log
MK15 User Manual V1.4 5.5 SIYI FPV App Update Log Date 2023-08-24 Version 2.5.15.660 4. New (ZT30): Laser calibration. Display laser ranging target’s coordinates. 5. New: Support TF format. Updates 6. New (ZT30): Thermal color palette. 7. New: File manager to preview stored pictures in TF card.
Page 120: Image Transmission
6.1 Control Gimbal Camera from 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. 6.1.1 Preparation It is necessary to prepare the tools, firmware, and software below before controlling gimbal camera in this way.
Page 121 SIYI FPV App Steps 1. Power air unit and bind it with ground station. 2. Use SIYI Gimbal to SIYI Link Cable to connect the air unit’s Ethernet port with the gimbal camera’s Ethernet port. 3. Update SIYI FPV app to the latest.
Page 122: Gimbal Pitch And Yaw Rotation
SIYI QGC App Steps 1. Power air unit and bind it with ground station. 2. Use SIYI Gimbal to SIYI Link Cable to connect the air unit’s Ethernet port with the gimbal camera’s Ethernet port. 3. Run SIYI QGC app, go to “Comm Links – Video Settings”, and select “RTSP Video Stream”...
Page 123: Zoom
MK15 User Manual V1.4 6.1.3 Zoom While SIYI FPV App or SIYI QGC app is running, Touching “Zoom in” or “Zoom out” icon on can control the zoom camera, up to 6X digital zoom. 6.1.4 Take pictures and Record Video While SIYI FPV App or SIYI QGC app is running, Touch “Photo”...
Page 124: Input Hdmi Camera
4. Go back to QGC home page to check image display. 6.3 Input HDMI Camera HDMI camera must be through the SIYI air unit HDMI input converter to output to the SIYI air unit, please refer to the steps below for detail.
Page 125: Input Dual-Channel Video Streams
Mark Dual video stream does not work when the two cameras use the same IP address. For more details about the IP addresses of SIYI links and gimbal cameras, please refer to the chapter 6.5 in this manual. 6.4.1 Input Dual SIYI Cameras / Gimbals / Air Unit HDMI Input Converters Please assign different IP addresses to SIYI cameras, gimbals, and air unit input converters.
Page 126: Input An Siyi Hdmi Converter And A Third-Party Ip Camera
6.4.3 Input an SIYI HDMI Converter and a Third-Party IP Camera Make sure that the IP camera use a different IP address from the HDMI converter and connect them to the FPV Hub. Then open SIYI FPV app, input the RTSP addresses, and you will see two video streams.
Page 127: Common Ip Addresses
Air Unit HDMI Input Converter’s RTSP Address: rtsp://192.168.144.25:8554/main.264 Common Video Player: SIYI FPV, QGroundControl, EasyPlayer Network Diagnosis Tool: Ping Tools Mark SIYI FPV camera and air unit HDMI input converter are labeled with RTSP addresses before delivery. Please pay an attention. 2023 SIYI Technology, All Rights Reserved...
Page 128: Solutions To No Image
MK15 User Manual V1.4 6.6 Solutions to No Image If MK15 remote controller failed to display image, please try to follow the steps below to investigate possible reasons. 1. Check communication: ⚫ If the remote controller is bound with the air unit (remote controller and air unit status indicator is green)? ⚫...
Page 129 MK15 User Manual V1.4 If you have done trouble shooting by following all steps above, but there are still no clues, please contact your reseller or SIYI after-sale service. 2023 SIYI Technology, All Rights Reserved...
Page 130: Output Video Stream From Remote Controller
HDMI port, the video stream will display. 6.7.2 Through WiFi Hotspot Let’s take an example of outputting video stream to a Windows laptop, running SIYI QGroundControl. 1. Go to Android system settings “Network & Internet – Hotspot & Tethering – Wi- Fi Hotspot”.
Page 131 If the same video source is used in the laptop and the remote controller simultaneously, one of the video streams may delay or stuck due to bandwidth limit. If it happens, you can assign one video stream as “SIYI Camera 1 / 2” protocol, and another video stream as standard RTSP protocol.
Page 132: Android Os
TF card to the Android system storage. Then go to “File Manger” in the Android system and find the files to install. 7.2.2 Through USB Disk Save the files into your USB disk and plug the disk onto the remote controller. Copy 2023 SIYI Technology, All Rights Reserved...
Page 133: Through Type-C File Transfer
1. Connect the remote controller to the Windows computer through the Type-C port. 2. Confirm to “Disable video stream to enable Type-C data transfer”. 3. Tap “Android System – Charging this device via USB”. 2023 SIYI Technology, All Rights Reserved...
Page 134 MK15 User Manual V1.4 4. Keep tap for more information. 5. Choose “File Transfer”. 6. You will see the remote controller as a storage device in your Windows computer. 2023 SIYI Technology, All Rights Reserved...
Page 136: Check Android Firmware Version
Remote controller carries a specialized Android system. Steps 1. Go to Android system settings. 2. Slide down to the “About Phone” settings. 3. Slide down to the last option to check the Android firmware version. 2023 SIYI Technology, All Rights Reserved...
Page 137: Siyi Assistant
MK15 User Manual V1.4 8 SIYI Assistant SIYI PC Assistant is a Windows software developed by SIYI to configure many SIYI products for configuration, firmware update, and calibration. Mark The manual is edited based on SIYI PC Assistant v1.3.7. SIYI PC Assistant and the relevant firmware pack can be downloaded from SIYI official website: https://siyi.biz/en/index.php?id=downloads1&asd=193...
Page 138: Firmware Update
MK15 User Manual V1.4 8.1 Firmware Update SIYI remote controller and air unit can be connected to Windows computer and be upgraded through SIYI Assistant. Before upgrading, it is necessary to prepare the tools, software, and firmware below. ⚫ SIYI PC Assistant (v1.3.7 or latest version) ⚫...
Page 139 2. Use the upgrade cable to connect the remote controller’s upgrade port to the Windows computer’s USB port. 3. Run “SIYI Assistant” and switch to the “Upload” page to check the current firmware version of the remote controller and the air unit.
Page 140 RF firmware version with number 0. Don’t worry if the ground unit firmware and the air unit firmware are different in initial numbers, they can still bind and work normally if their firmware version match. 2023 SIYI Technology, All Rights Reserved...
Page 141: Main Firmware Update Log
V5.4.2 svn6565 Firmware Air Unit V5.2.8 svn6270 Firmware 1. New: Now SIYI datalink SDK can request remote controller and air unit firmware version. 2. New: Now the 4-pin serial port on the top of the remote controller is recognizable. Updates 3.
Page 142: Siyi Assistant Update Log
1. New: Compatibility to a new model. 2. New: Support ZT30 to switch between H265 and H264 codec. Updates 3. Improve: Gimbal calibration function has its own page now. 4. New: Gimbal configuration (thermal synchronize zoom, thermal color palette) 2023 SIYI Technology, All Rights Reserved...
Page 143: After-Sale Service
⚫ Product Defect ⚫ Product Damage SIYI products under the two situations can be sent back to SIYI for repairing. Defect products with valid warranty can be repaired for free. Defect products without valid warranty or damaged products should be charged of repair fees after repairing.
Page 144: Warranty
It is requested beyond seven (7) calendar days of receiving a product. A product sent to SIYI for Return & Refund Service does not include all original accessories, attachments or packaging, or any item is not in new or like-new condition, i.e., with cracks, dents, or scratches.
Page 145: 15-Day Replacement
Damage is caused to the product by uncontrollable external factors, including fire, floods, high winds, or lightning strikes. A product is not delivered to SIYI within seven (7) calendar days after Return & Refund Service confirmation is sent from SIYI.
Page 146 Damage is caused by uncontrollable external factors, including fires, floods, high winds, or lightning strikes. Received product has not been sent back to SIYI seven (7) calendar days after replacement confirmation from SIYI. Proof of damage during transit issued by the carrier cannot be provided.
Page 147: 1-Year Warranty Repair
Charges may apply for services not covered by this Limited Warranty. Please contact SIYI for information specific to your location. Please note that the warranty service is only available in the respective SIYI service regions where you purchased your SIYI product.
Page 148 Damage caused by reliability or compatibility issues when using unauthorized third- party parts. Damage caused by operating the unit with a low-charged or defective battery. Products or parts with an altered identification label or from which the identification label has been removed. 2023 SIYI Technology, All Rights Reserved...
Page 150 RF Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated. with minimum distance 20cm between the radiator & your body. 2023 SIYI Technology, All Rights Reserved...

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