Release v1.5.2

Improves the calibration handling on Pixhawk 2.1 boards.

Release v1.5.1

This release changes the estimator to EKF2 for all vehicles as it is the most tested in typical outdoor scenarios. Indoor scenarios and general R&D applications continue to benefit greatly from the LPE estimator.

To switch back to the previous default, set SYS_MC_EST_GROUP to 1. To use EKF2, set SYS_MC_EST_GROUP to 2.

Most notable changes / improvements:

• EKF2 default estimator
• STM32F7 support added
• Crazyflie support added
• Parrot Bebop 2 support added
• Log streaming via Wifi to the ground and straight to the cloud
• New log analysis tool with real-time zoomable plots (logs.px4.io)
• Reduction of memory footprint
• Performance improvements in VTOL flight control
• Pre-flight check improvements on EKF2
• Side-slip support in EKF2

Hardware support

• Intel Aero Flight Control
• Qualcomm Snapdragon Flight
• Parrot Bebop 2
• Raspberry Pi / Emlid Navio 2+
• CrazyFlie
• Pixhawk 1 (FMUv2 architecture)
• Pixhawk (2) Mini (FMUv3 architecture)
• Pixhawk 2 (FMUv3 architecture)
• Pixracer (FMUv4 architecture)
• Dronesmith Lucy (FMUv4 architecture)
• MindPX (FMUv4 architecture)
• Pixhawk 3 Pro (FMUv4-PRO architecture)
• Upcoming Pixracer 4 & Pixhawk 4 (FMUv5 architecture, STM32F7)

1.5.1 Release RC4

Final release candidate. This release changes the estimator to EKF2 for all vehicles as it is the most tested in typical outdoor scenarios. Indoor scenarios and general development continue to benefit greatly from the LPE estimator.

To switch back to the previous default, set SYS_MC_EST_GROUP to 1. To use EKF2, set SYS_MC_EST_GROUP to 2.

Most notable changes / improvements:

• EKF2 default estimator
• STM32F7 support added
• Crazyflie support added
• Parrot Bebop 2 support added
• Log streaming via Wifi to the ground and straight to the cloud
• New log analysis tool with real-time zoomable plots (logs.px4.io)
• Reduction of memory footprint
• Performance improvements in VTOL flight control
• Pre-flight check improvements on EKF2
• Side-slip support in EKF2

Hardware support

• Intel Aero Flight Control
• Qualcomm Snapdragon Flight
• Parrot Bebop 2
• Raspberry Pi / Emlid Navio 2+
• CrazyFlie
• Pixhawk 1 (FMUv2 architecture)
• Pixhawk 2 Mini (FMUv3 architecture)
• Pixhawk 2 (FMUv3 architecture)
• Pixracer (FMUv4 architecture)
• Pixhawk 3 Pro (FMUv4-PRO architecture)
• Upcoming Pixracer 4 & Pixhawk 4 (FMUv5 architecture, STM32F7)

1.5.1 Release RC3

Minor improvements over RC1 and RC2:

• Better differential pressure / airspeed preflight check
• Better default gains for Intel Aero RTF drone

1.5.1 Release RC2

Minor fixes and improvements since RC1

1.5.1 Release RC1

First release candidate for 1.5.1. This release changes the estimator to EKF2 for all vehicles as it is the most tested in typical outdoor scenarios. Indoor scenarios and general development continue to benefit greatly from the LPE estimator.

To switch back to the previous default, set SYS_MC_EST_GROUP to 1. To use EKF2, set SYS_MC_EST_GROUP to 2.

Most notable changes / improvements:

• EKF2 default estimator
• STM32F7 support added
• Crazyflie support added
• Parrot Bebop 2 support added
• Log streaming via Wifi to the ground and straight to the cloud
• New log analysis tool with real-time zoomable plots (logs.px4.io)
• Reduction of memory footprint
• Performance improvements in VTOL flight control
• Pre-flight check improvements on EKF2
• Side-slip support in EKF2

Hardware support

• Intel Aero Flight Control
• Qualcomm Snapdragon Flight
• Parrot Bebop 2
• Raspberry Pi / Emlid Navio 2+
• CrazyFlie
• Pixhawk 1 (FMUv2 architecture)
• Pixhawk 2 Mini (FMUv3 architecture)
• Pixhawk 2 (FMUv3 architecture)
• Pixracer (FMUv4 architecture)
• Pixhawk 3 Pro (FMUv4-PRO architecture)
• Upcoming Pixracer 4 & Pixhawk 4 (FMUv5 architecture, STM32F7)

1.5.0 Release RC1

This is a preview for the 1.5.0 release with general improvements.

Release v1.4.4

This release improves the overall stability of the system, in particular on Pixracer and USB.

1.4.3 Release

This release improves the ICM20608 filter performance and fixes a USB connectivity issue on the NuttX OS which is visible on all operating systems but most severe on Mac OS X.

1.4.2 Release

This release reduces the memory footprint of EKF2 for VTOL use cases.