How to connect Sbus Skydroid H12 Remote Control to Pixhawk

SBUS Connection Setup Overview

1. Wiring Configuration:
   • Connect the SBUS port of the remote controller’s transmitter to the flight controller’s D2 port (default SBUS input).
   • Only two wires (GND and SBUS-RX) are required for D2; ignore wire colors and follow port definitions.
2. Air Unit vs. Ground Unit:
   • Air Unit:
     • Connect Sbus Out and GND to the air unit.
     • SBUS-Out and GND ports transmit SBUS signals to the ground unit.
     • Integrates an IP camera and TTL telemetry from the flight controller (sending video + telemetry wirelessly).
   • Ground Unit:
     • Connect Sbus In and GND to the ground unit.
     • Receives SBUS-In and GND from the air unit.
     • Telemetry data is routed via Ethernet to the Skydroid transmitter (no connection to D3 port).
3. Telemetry & Video Transmission:
   • Flight controller telemetry and video are wirelessly transmitted to the ground unit.
   • Telemetry is forwarded via network cable to the remote control for real-time feedback.
4. QGroundControl (QGC) Configuration:
   • Establish communication link between flight controller and remote control.
   • Validate telemetry by physically moving the flight controller; observe real-time data updates in QGC.
5. SBUS Signal Demonstration:
   • Remote control channels (e.g., stick movements) transmit SBUS commands to the flight controller.
   • Confirm bidirectional communication: SBUS commands sent to the flight controller, telemetry data received back.
6. Final Validation:
   • Verify both video feed (from IP camera) and SBUS control function simultaneously.
   • Observe channel response in QGC when operating the remote control, confirming seamless integration.

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Key Notes:

• Wire Colors: Irrelevant; prioritize port definitions (e.g., SBUS-RX vs. GND).
• Wireless Link: Critical for transmitting SBUS, telemetry, and video between air/ground units.
• D3 Port: Unused in this setup; focus on D2 and network/Ethernet connections.

This setup ensures robust control (SBUS), telemetry feedback, and HD video streaming for drone operations.

Here is the text in the video.

We will demonstrate how to connect the remote controller and pass the sbus data to the flight controller. We have one cable connected the SBUS port to the transmitter of remote control. The default drone video data link transceiver’s D2 data port is Sbus. D2 has three wires, only two of them need to be connected, Please ignore the color of the wire in the video and look at the definition of D2 wire.

let’s look the SBUS connection details. This red one in the video is Ground. The middle one is Sbus receiver, SBUS input. Just connected GND and SBUS in on the ground unit.

The air unit of our wireless video data link is SBUS Out and GND. This place must be paid attention to. The wiring is different with ground unit. Let’s start with the air unit. There is connecting a IP camera on the ethernet port, and data port D3 TTL to get the telemetry data from the flight control. The telemetry data and video are sent to the ground unit through our wireless drone video data link.

On the ground unit, the telemetry data is also sent through over the ethernet. It was sent directly to the remote control. You will find that there is no wire on D3 port. You don’t need to use data port on the ground unit. That is calling transfer serial data to ethernet. We use the air unit’s serial port to ground unit’s ethernet, Through the network cable, to skydroid transmitter, to remote control.

The SBUS is connected, and now let’s operation on the remote control, Check QGroundControl setting, Now the comms link is connected. We can disconnect it first and start over operation.

It receives telemetry data. Now it is ok. let me move flight control. When we move this flight control, and it will change here. Now the telemetry is connected. Let’s demonstrate another about video. We can see the IP camera’s video, The video is connected. The telemetry data and video in the sky have been successfully sent to the remote control.

Let’s do another SBUS. We still use QGC. This remote control is built in. When moving Joystick, the keys will automatically move. It’s like the SBUS of the remote control. It is sent to the flight controller continuously. The telemetry data from the flight controller comes up. It explains the signal of S-BUS.
Now the IP camera, the telemetry data and S-BUS are all demonstrated and work well.