We are using pixhawk 2.4.8 flight controller for our copter.But the issue is that the copter starts yaw motion at a very high speed at the time of take-off from the ground. Please suggest some methods how can I overcome this issue?
Search this forum for “yaw imbalance”:
Follow these guidelines
And you will see:
Roll/Pitch/Yaw-Imbalance: When mounting the motors on the arms, especially on round arms, make sure that all motors and propellers are perfectly level so that the thrust produced is directed straight down. Misaligned motors will cause the multicopter to drift. Depending on which motors are misaligned and their direction of misalignment, the multicopter drifts laterally forward, backward, left, right, or axially around the Z-axis, and efficiency is reduced accordingly.
You might also have non-neutral trim on the yaw channel of your RC transmitter of configured the RC trim parameter of your Yaw RC channel off-center.