This is done to allow proper initialization of the new FlightTask and give it a chance to continue the setpoints without discontinuity. The function checkSetpoints replaces the setpoints containing NANs with an estimate of the state. The estimate is usually the current estimate of the EKF or zero. The transition FlightTask also provides an estimate of the current acceleration to properly initialize the next FlightTask after back-transition. This avoid having to initialize the accelerations to zero knowing that the actual acceleration is usually far from zero.
PX4 Drone Autopilot
This repository holds the PX4 flight control solution for drones, with the main applications located in the src/modules directory. It also contains the PX4 Drone Middleware Platform, which provides drivers and middleware to run drones.
- Official Website: http://px4.io (License: BSD 3-clause, LICENSE)
- Supported airframes (portfolio):
- Multicopters
- Fixed wing
- VTOL
- many more experimental types (Rovers, Blimps, Boats, Submarines, etc)
- Releases: Downloads
PX4 Users
The PX4 User Guide explains how to assemble supported vehicles and fly drones with PX4. See the forum and chat if you need help!
PX4 Developers
This Developer Guide is for software developers who want to modify the flight stack and middleware (e.g. to add new flight modes), hardware integrators who want to support new flight controller boards and peripherals, and anyone who wants to get PX4 working on a new (unsupported) airframe/vehicle.
Developers should read the Guide for Contributions. See the forum and chat if you need help!
Weekly Dev Call
The PX4 Dev Team syncs up on a weekly dev call.
Note
The dev call is open to all interested developers (not just the core dev team). This is a great opportunity to meet the team and contribute to the ongoing development of the platform. It includes a QA session for newcomers. All regular calls are listed in the Dronecode calendar.
Maintenance Team
- Project: Founder - Lorenz Meier, Architecture: Daniel Agar
- Communication Architecture
- UI in QGroundControl
- Multicopter Flight Control
- Multicopter Software Architecture
- VTOL Flight Control
- Fixed Wing Flight Control
- OS / NuttX David Sidrane
- Driver Architecture Daniel Agar
- Commander Architecture Julian Oes
- UAVCAN Daniel Agar
- State Estimation - Paul Riseborough
- Vision based navigation
- Obstacle Avoidance - Martina Rivizzigno
- RTPS/ROS2 Interface - Nuno Marques
See also About Us (px4.io) and the contributors list (Github).
Supported Hardware
This repository contains code supporting these boards:
- Snapdragon Flight
- Intel Aero
- Raspberry PI with Navio 2
- Parrot Bebop 2
- FMUv2
- FMUv3 Pixhawk 2
- FMUv4
- FMUv5 (ARM Cortex M7)
- Airmind MindPX V2.8
- Airmind MindRacer V1.2
- Bitcraze Crazyflie 2.0
Additional information about supported hardware can be found in PX4 user Guide > Autopilot Hardware.
Project Roadmap
A high level project roadmap is available here.