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Given the original poster's comment that "It happens very consistently for us." I suspect the motor spin observed in https://github.com/PX4/Firmware/issues/7457 is not caused by the original issue of slow decay on the PWM pins at reset, but the post reset pulse of 3.1 Ms arriving in a window that the ESC considers it valid. The results from testing, indicated that the if the PWM pins were clamped low for > 300 Ms, prior to reset the motors did not spin. This would delay the the post reset pulse of 3.1 Ms out by > 300 Ms. This change delays the reset and therefore the pulse by at least 400 Ms.
PX4 Pro Drone Autopilot
This repository holds the PX4 Pro 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.md)
- Supported airframes:
- Multicopters
- Fixed wing
- VTOL
- many more experimental types (Rovers, Blimps, Boats, Submarines, etc)
- Releases: Downloads
Please refer to the user documentation and user forum for flying drones with the PX4 flight stack.
Weekly Dev Call
The PX4 Dev Team syncs up on a weekly dev call.
- Wednesday 17:00 Central European Time, 11:00 Eastern Time, 08:00 Pacific Standard Time
- Uber conference (dial-in or web client)
- The agenda is announced in advance on the PX4 Discuss
- Issues and PRs may be labelled devcall to flag them for discussion
Developers
Maintenance Team
- Project / Founder - Lorenz Meier
- Dev Call - Ramon Roche
- Communication Architecture
- UI / UX
- Multicopter Flight Control
- VTOL Flight Control
- Fixed Wing Flight Control
- Racers - Matthias Grob
- OS / drivers - David Sidrane
- UAVCAN / Industrial - Pavel Kirienko
- State Estimation - James Goppert, Paul Riseborough
- Vision based navigation
- Obstacle Avoidance - Vilhjalmur Vilhjalmsson
- Snapdragon
- Intel Aero
- Raspberry Pi / Navio - Beat Kueng
- Parrot Bebop - Michael Schaeuble
- Airmind MindPX / MindRacer - Henry Zhang
Supported Hardware
This repository contains code supporting these boards:
- Snapdragon Flight
- Intel Aero
- Raspberry PI with Navio 2
- Parrot Bebop 2
- FMUv1.x
- FMUv2.x
- FMUv3.x Pixhawk 2
- FMUv4.x
- Pixracer
- Pixhawk 3 Pro
- FMUv5.x (ARM Cortex M7, future Pixhawk)
- STM32F4Discovery (basic support) Tutorial
- Gumstix AeroCore (v1 and v2)
- Airmind MindPX V2.8
- Airmind MindRacer V1.2
- Bitcraze Crazyflie 2.0
Project Milestones
The PX4 software and Pixhawk hardware (which has been designed for it) has been created in 2011 by Lorenz Meier.
Description
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