# 电机检查
注解
This section is being replaced by an Actuators configuration screen.
After the airframe is setup and configured you should validate the motor assignment and spin direction, and the servo response. This can be done in QGroundControl, under the Vehicle Setup > Motors (opens new window) tab.
Note the following PX4-specific behaviour:
- 如果使用了安全按钮，在允许电机测试之前必须按下，保证其开启。
- 急停开关仍然可以立即停止电机。
- 使用参数 COM_MOT_TEST_EN ，可以禁用电机测试。
- On boards with an IO, only the MAIN pins can be tested.
- On the shell, motor_test can be used as well, which has additional options.
If one or more of the motors do not turn in the correct direction according to the configured airframe, they must be reversed. There are several options:
- If using ESCs that support DShot you can reverse the direction via DShot commands.
- Swap 2 of the 3 motor cables (it does not matter which ones). :::note If motors are not connected via bullet-connectors, re-soldering is required (this is a reason, among others, to prefer DShot ESCs). :::
The following additional checks should be performed to validate that the vehicle is setup correctly:
- With propellers still removed, switch to Stabilised mode (Multicopter) or Manual mode (Fixed Wing) and arm the vehicle.
- Increase the throttle a little (so the vehicle does not automatically disarm) and check that the motors respond to throttle changes.
- Check that all motors spin at minimum throttle.
- If the vehicle has ailerons, check if they are responding in the right directions when giving roll/pitch stick input commands.