1. Setting up GPS:
- Connect the 4-pin CAN cable from Here 4 to CAN1 or CAN2 on the flight control. (Note: Ensure firmware compatibility)
- Power the flight control and connect it to Mission Planner.
- In Mission Planner, navigate to Config - Full Parameter List and modify the following parameters:
- CAN_D1_PROTOCOL: 1
- CAN_D2_PROTOCOL: 1
- CAN_P1_DRIVER: 1
- CAN_P2_DRIVER: 1
- GPS_TYPE: 9
- NTF_LED_TYPES: 231
- Click "Write Params" after modifications.
- Reboot the autopilot; CAN function should be enabled upon reboot.
Compass Setting:
- If there's no safety switch, disable it by modifying BRD_SAFETYENABLE to 0.
- Alternatively, connect an external safety switch to GPS1 port.
- Note: For Cube orange+, compasses are ordered on the bottom, and the external CAN compass is selected by default.
2. Setting up RTK:
Setup
Ground Side:
- Connect the base antenna to the base station and then connect the base station module to a computer via USB port.
- Connect the telemetry module to another USB port on the same computer.
UAV Side:
- Connect Here 3 / Here 3+ to the CAN interface and the telemetry module to the TELEM interface on the flight control.
Antenna Placing:
- Place the RTK antenna in an environment with a clear view of the sky, ideally 30 degrees above the horizon.
- Avoid placing antennas indoors, urban areas, forests, or near the ground.
- Ensure no electronic devices are nearby that may affect the GPS signal.
Base Module Setting using Mission Planner:
- Open Mission Planner and navigate to "initial setup → Optional Hardware → RTK/GPS Inject".
- Select the correct base module COM port and click connect.
- Enter the expected absolute geographic accuracy and minimum survey time.
- Click "Restart" to initiate the surveying process.
- Allow time for the base station to meet accuracy requirements.
- After the survey is complete, save the current location in Mission Planner.
Mission Planner screen after completition of survey.
Detailed Documentation:
For more detailed instructions and information, please refer to the official documentation available at: Here 3 Manual - RTK Use Operation.