Tested functions:
1. Normal takeoff without jitter. Channel S1234 outputs normally, azimuth is normal. Gyroscope is stable and does not jitter.
2. OSD displays normally, camera and video transmission are normal.
3. Voltage detection is normal.
4. Serial ports 1, 4, and 5 are functioning properly. Accessing GPS and the receiver works normally.
5. Beep sound is normal when enabled.
6. LED lights are normal.
7. Compass and barometer are properly recognized. Interface IC2 is available.
8. 5V BEC is normal.
9. Automatic return-to-home test is normal.
10. Using OSD to adjust parameters on the tx 4 serial port is normal.