Flight with the LQ3+QE2 Remote Controller Without a Screen

Caution

The sensor and attitude data must be normal before takeoff; otherwise, the aircraft may crash. For the specific inspection and calibration procedures, refer to the calibration section of the Power-On and Debugging Procedure.

Warning

Remote controller check: Before using the UAV, set the SWA/SWB/SWC/SWD switches on the remote controller to their top positions. They may have been switched to other modes during transportation. Before use, review the section on remote controller operation and familiarize yourself with the relevant remote controller channel settings.

QGC Download

Official QGroundControl Download Link

1. Remote Controller Connection

1. Connect the remote controller to the computer with an Ethernet cable.

2. The red box identifies the Video Transmission Power Button. Briefly press and then press and hold it.

Short-press and release the remote controller's video transmission power button. After hearing two beeps, quickly press and hold it. After hearing three beeps, the indicator lights illuminate and the unit powers on. Use the same procedure to power it off.

3. The white box identifies the Remote Controller Power Button. Press and hold it to turn on the remote controller.

2. Battery Installation

The battery mounts on the bottom of the UAV. Press the battery latch and secure the battery firmly to the aircraft to prevent it from loosening or falling off.

3. Powering On the UAV

The green box identifies the rear power button. Briefly press the button for 0.5 s to power on the UAV. Use the same method to power it off. Do not press and hold the button, as doing so may cause the aircraft to power on and immediately off, or power off and immediately back on. 4. Ethernet Settings

Connect the remote controller to the computer with an Ethernet cable, then configure a static IPv4 address for Ethernet in Windows.

• Default static IP: 192.168.1.123

• Subnet mask: 255.255.255.0

• Gateway address: 192.168.1.1

5. QGC Connection

• After successfully configuring Ethernet, open QGC, click Application Settings, click Comm Links, and configure the connection.

• Set the name, port, UDP, and IP. (The name can be arbitrary. Select UDP. The port is 8080, which was set when pairing the video transmission system. The IP is 192.168.1.123. For details, refer to the section on remote controller operation.)

• After completing the settings, click Connect and wait for QGC to connect successfully.

6. Positioning and Performance Verification

In the web console (192.168.1.88:18080), open the positioning status page and verify that pose and confidence data are being output normally. Confirm that the system is in fused "vision + radar" mode and that the positioning result neither drifts nor diverges.

Username: root, password: root. Interference Resistance Test:

Move the entire frame a short distance by hand and observe whether the trajectory displayed in the web console is convergent and accurate, with no signs of divergence.

Coordinate Frame Synchronization Test:

QGC interface: On the flight controller's MAVLink inspection interface, open the LOCAL_POSTION_END screen and observe the X\Y\Z-axis data. Using the aircraft nose at the origin (the algorithm startup position) as the reference, forward movement is positive X, backward movement is negative X, rightward movement is positive Y, leftward movement is negative Y, upward movement is negative Z, and downward movement is positive Z.

On the flight controller's MAVLink inspection interface, open the ATTITUDE screen and observe the roll\pitch\yaw attitude data. Using the level aircraft attitude at the origin as the reference, lowering the nose produces a negative pitch, raising the nose produces a positive pitch, tilting (lowering) to the right produces a positive roll, tilting (lowering) to the left produces a negative roll, turning left decreases yaw (the attitude indicator decreases), and turning right increases yaw (the attitude indicator increases).

7. Propeller Installation

Warning

Before assembly, you must clearly distinguish the nose and tail orientations of the UAV, verify the actual rotation direction of the motor on each arm, strictly match the propeller with the corresponding rotation direction, and install each propeller with its upper and lower surfaces correctly oriented. Misidentifying the nose or tail, using an incorrect motor rotation direction, mismatching the propeller rotation direction, or installing a propeller upside down will prevent the aircraft from generating lift normally and may cause uncontrolled spinning in flight, resulting in a crash, equipment damage, or personal injury.

• Confirm the orientation of the aircraft nose;

• In QGC, click the controls in the white boxes shown in the figure one by one to check the rotation direction of each motor and ensure that every motor rotates in the correct direction;

• Install the propellers: The side of the propeller with the more raised identification engraving is the windward surface. The orientation of the propeller's windward surface must match the rotation direction of the corresponding motor. Install the propeller with the engraved and marked side facing upward on the motor. Install a counterclockwise propeller on a counterclockwise motor and a clockwise propeller on a clockwise motor.

Motor Rotation Directions:

As shown in the figure, motors 1 and 2 rotate counterclockwise, while motors 3 and 4 rotate clockwise. Counterclockwise Propeller: Clockwise Propeller: Installation Orientation:

8. Protective Guard Installation

• Identify the orientation of the protective guard: the side with the greater curvature faces the aircraft nose, and the side with the smaller curvature faces the aircraft tail;

• Install the bracket: When installing the protective guard, place the gray carbon-fiber bracket above the black retaining clip.

9. Sensor Calibration

Calibrate the gyroscope, accelerometer, and horizon in sequence. (Select a level surface during calibration. The compass does not need to be calibrated.)

10. Pre-Flight Check

• Place the aircraft indoors in a well-lit environment and ensure that the surrounding area is free of obstacles. The pilot should stand 5 meters from the aircraft and face the aircraft's tail.

• Check the battery level and install the battery.

• Check that the aircraft exterior is intact, with no obvious impact damage or abnormalities.

• Turn on the remote controller, ensure that all remote controller switches are returned to their default positions, turn on the aircraft, and check that the signal-strength icon in the remote controller status bar indicates that it is paired with the aircraft.

• Connect to the QGC ground station, enter the flight screen, and check the satellite count, flight mode, battery level, remote controller settings, flight mode settings, and other flight-related parameters. Ensure that the parameter settings or parameter calibrations meet your requirements to maintain flight safety.

• If multiple aircraft are being tested at the same time, divide the flight area to prevent mid-air collisions that could cause serious safety accidents.

11. Remote Controller Controls

Channel 6: The first position is position mode. Switch the flight mode, then switch back to position mode. If QGC reports no errors, the aircraft can be armed normally.

Channel 5: UAV arm/disarm switch. The first position at the top is disarmed, and the bottom position is armed. After arming, you can move the stick to fly. (Move the stick slowly.)

Channel 7: The first position at the top disables the emergency propeller lock, and moving the switch down to the second position engages the emergency propeller lock for one-touch propeller locking in an emergency. (Use when the UAV is uncontrollable or abnormal.) 12. Final Flight

The initial test flight may be performed only after all preceding steps have been checked and confirmed to be correct.

FlyCore supports AI control of the UAV for secondary development. For details, see the Integration Guide for Developing the FlyCore WEB Ground Station with AI.