Pixhawk Wiring Quickstart

PX4 does not manufacture this (or any) autopilot. Contact the manufacturer for hardware support or compliance issues.

This quick start guide shows how to power the 3DR Pixhawk flight controller and connect its most important peripherals.

接线介绍

The image below shows standard Pixhawk connections (excepting the motor and servo outputs). We'll go through each main part in the following sections.

飞控的安装和方向

The Pixhawk should be mounted on the frame using vibration-damping foam pads (included in the kit). It should be positioned as close to your vehicle’s center of gravity as possible, oriented top-side up with the arrow points towards the front of the vehicle.

蜂鸣器与安全开关

Connect the included buzzer and safety switch as shown below (these are mandatory).

GPS + 罗盘

Attach a GPS (required) to the GPS port using the 6-wire cable supplied in the kit. Optionally attach a compass to the I2C port using a 4-wire cable (the Pixhawk has an internal compass, which can be used if necessary).

电源

Connect the output of a Power module (PM) to the POWER port using a 6-wire cable as shown. The PM input will be connected to your LiPo battery, while the main output will supply vehicle ESCs/motors (possibly via a power distribution board).

The power module supplies the flight controller with power from the battery and also sends information about the analog current and voltage supplied via the module (including both power to the flight controller and to motors etc).

The power module supplies the flight controller itself, but cannot power servos and other hardware connected to the controller's output ports (rail). For copter this does not matter because the motors are separately powered.

For planes and VTOL the output rail will need to be separately powered in order to drive servos for rudders, elevons etc. Often the main pusher/puller motor uses an ESC with an integrated BEC that can be connected to the Pixhawk output rail. If not, you will need to setup a 5V BEC to connect to one of the free Pixhawk ports (without power, the servos will not work).

无线电遥控

A remote control (RC) radio system is required if you want to manually control your vehicle (PX4 does not require a radio system for autonomous flight modes).

You will need to select a compatible transmitter/receiver and then bind them so that they communicate (read the instructions that come with your specific transmitter/receiver).

The instructions below show how to connect the different types of receivers to Pixhawk:

Spektrum and DSM 接收机连接到 SPKT/DSM 输入端口。
PPM-SUM and S.BUS 接收机连接到如图所示的 RC 地线、电源线和信号线。
PPM and PWM 接收机有 每个通道单独的连接线 必须连接在 RC 端口，通过一个类似这样的 PPM 编码器 (PPM-Sum 接收机每个通道使用单独的信号线).

For more information about selecting a radio system, receiver compatibility, and binding your transmitter/receiver pair, see: Remote Control Transmitters & Receivers.

数传电台（可选）

Telemetry radios may be used to communicate and control a vehicle in flight from a ground station (for example, you can direct the UAV to a particular position, or upload a new mission). One radio must be connected to your vehicle as shown below. The other is connected to your ground station computer or mobile device (usually by USB).

电机

The mappings between MAIN/AUX output ports and motor/servos for all supported air and ground frames are listed in the Airframe Reference.

:::caution The mapping is not consistent across frames (e.g. you can't rely on the throttle being on the same output for all plane frames). Make sure to use the correct mapping for your vehicle. :::

If your frame is not listed in the reference then use a "generic" airframe of the correct type.