Pixhawk

if you meet some motor not run.Please check the Servo Output Make sure the function of Motor is Motor 1..4.

https://ardupilot.org/copter/docs/common-parameter-reset.html This article shows several ways to reset all parameters to their default values.If you would like to restore any

Link from https://ardupilot.org/copter/docs/common-baro-external.html Most autopilots include a barometer directly on the autopilot but attaching an external barometer can be useful

This article explains how to connect the ESCs, motors and propellers to a autopilot. The Pixhawk is used as an

Some people may meet this problem,If this error causes the pixhawk to fail to arm, it is because the voltage

ArduPilot includes a suite of Pre-arm Safety Checks which will prevent the vehicle from arming its propulsion system if any

1.For 3.4.6 version firmware Do not select Board Voltage at Arm_check parameter,then remember to click the “Write Params”Button. Then reboot

If you use ardupilot firmware 4.0 or higher, you may encounter this problem. This is due to insufficient external power

Upload Plane firmware, airspeed only can be supported for Plane firmware, do not use for Copter or other. 2.Connect Dynamic

Use OLED for PIXHAWK, must follow these steps, Connect OLED to I2C port of Pixhawk Upload ardupilot firmware, at least