To calibrate your X-Star remote controller
Open the Starlink app and tap Start.
Tap the small RC transmitter symbol located near the status bar.
Tap RC Calibration.
Release both command sticks and the Gimbal Pitch Dial to the central position. The three centered circles on the RC calibration screen will be highlighted successively. Tap Start to begin calibration.
Push both command sticks outwards in all four directions, and hold for 2 seconds in each direction.
Turn the Gimbal Pitch Dial clockwise and counterclockwise to its two ends and hold for 2 seconds at each end. All the bars on the screen will be fully highlighted when the calibration is completed. Tap Complete to finish.