BeF 3.5.6 merge

Merge with BF 3.5.6, notes can be found here https://github.com/betaflight/betaflight/releases/tag/3.5.6

Highlighted:

• Added support for connecting to SmartAudio 2.1 devices (BetaFlight #7461)

3.6.4 Betaflight Upstream merge

BetaFlight upstream merge, release notes can be found here https://github.com/betaflight/betaflight/releases/tag/3.5.4

ButterFlight 3.6.2

• Merged fixes from Betaflight 3.5.2 - read changes here
• Added Mode2 Flux and StrixF10 targets

ButterFlight v3.6.0 - Hercules' Trusty Steed

3.6.0 is rebased with BetaFlight 3.5.1. The following ButterFlight features are retained:

• Fast Kalman Filter
• Buttered PIDs
• ButterFlight/IMUF Quaternions
• 9 point TPA Curves
• PegasusUI support
• other minor changes.

Butterflight 3.5.2 RC3

RC3 Changes

• IMUF Quaternion Updates (V4)
• FRSKY & Fport telemetry fixes
• Remove Pterm filtering on D term for YAW in favour of proper D term filtering
• Auto Update Logic for IMUF Architecture
• Updated default PID settings for IMUF
• Fixes board orientation issues
• Fixes to unit tests
• Fixes to ANGLE / HORIZON with D term enabled
• Refactoring filter initialization on PID loop
• Refactor of Quaternion sensors
• Fixes to HEADFREE mode
• Buttered PID's Toggle on OSD

Features Being Tested

• Buttered PID's ( set buttered_pids = ON | OFF )
• D term on Yaw
• Improved RC Interpolation

Targets Added

• Airbot Omnibus F4 Fireworks

Known Issues

• Issues with Dshot on some F3 based targets
• Issues with F3's locking up on certain circumstances

Huge thanks to @apocolipse, @rs2k, @orneryd, @LexioTech, @adrianmiriuta, @s0up, @robertb and everyone on the #test-squad =)

Butterflight 3.5.1 - RC2

RC2 Changes

• ACC Alignment Fixes ( #105 )
• ACC MSP Blackbox Fixes ( #108 )
• Enable Auto-Level on HELIO Target
• Enable Quaternion on IMUF (HELIO)
• Omnibus F4 Fireworks Target ( Testing ) ( #107 )
• HEADFREE & MAG Fixes ( #127 and #124 )
• Default YAW PIDS Updated ( #117 )

Features Being Tested

• IMU Quaternion V4 (PR #79) ( Thanks Adrianmiriuta )
• Adding back D term to Yaw (PR #94) ( Thanks Ornery )
• GPS instead of MAG for heading calculations (PR #96 ) ( Thanks S0up )
• Add gyro_stage_2_filter_type to MSP (PR #99 ) ( Thanks Lexio )
• IMUF 105 RC3 (PR #85)
• Stage 2 filter and FKF Gain settings now editable in the filter's tab ( EXPERT MODE ONLY ). ( #23 )
• Default Dterm filter is now Biquad. ( #28 )
• kD Term Yaw has been re-enabled and exposed on the PID screen (Default is 5). ( #28 )
• Firmware Flasher Progress bar moved next to flash buttons to free up screen space. ( #24 )
• IMUF Filter settings exposed on UI under Filter. ( #31 )
• Dynamic Filter toggle removed on IMUF (HELIO) because it is not needed. ( #31 )
• Faster BB Logging rates enabled. ( #32 )

Known Issues

• Issues with Dshot on some F3 based targets
• Issues with F3's locking up on certain circumstances

Huge thanks to @apocolipse, @rs2k, @orneryd, @LexioTech, @adrianmiriuta, @s0up, @robertb and everyone on the #test-squad =)

Butterflight 3.5.1 - RC1

Features Being Tested

• IMU Quaternion V4 (PR #79) ( Thanks Adrianmiriuta )
• Adding back D term to Yaw (PR #94) ( Thanks Ornery )
• GPS instead of MAG for heading calculations (PR #96 ) ( Thanks S0up )
• Add gyro_stage_2_filter_type to MSP (PR #99 ) ( Thanks Lexio )
• IMUF 105 RC3 (PR #85)

Important Information

• This is a highly experimental build.
• You will need the newest version of the configurator 10.4.0-RC1 which will include the necessary UI changes to allow you to tune FKF and the D term yaw.
• Stock Yaw Dterm gain is set to 8 which is conservative and should be safe but please be careful when tuning it.
• GPS for heading calculations only affects the RTH arrow and allows users without MAG to use the feature.
• Quaternion testing will only be relevant for those using modes with Attitude calculation such as horizon / headfree / angle.

Minor Updates

• Stage 2 filter and FKF Gain settings now editable in the filter's tab ( EXPERT MODE ONLY )
• Default Dterm filter is now Biquad

Butterflight 3.5.0

New Feature

• Legacy Smart Audio Protocol is now a Feature with Configurator toggle (PR #63) ( Thanks Lexio )
• Composite USB HID Support pass through as CLI Option (PR #70) (Huge shoutout to @conkerkh)
• Stick Arming as CLI Option - Default is DISABLED STICK ARMING (PR #77)
• LUA & OSD Support for Butterflight FKF filter and HELIO IMUF settings (PR #51) (Thanks PaPaYoU)

Minor update

• Restored LED Support on F3 (PR #76)
• RC Interpolation Improvements to reduce CPU load (PR #81)

Bug Fixes

• Added back Gyro Overflow protection on YAW axis as default to prevent YSTTM (PR #62)
• Helio target (PR #5)

HELIO Target

• IMUF 104 Update with new defaults (PR #78)

LUA Scripts Repository

• https://github.com/ButterFlight/butterflight-tx-lua-scripts

ButterFlight v3.4.2

Minor update

• Update to vtx_akk_hack to better support Mach2 VTx's (#36)
• Update defaults for Helio target (#35 #33 #32)
• New "stage2" filter type, "Fixed K Kalman", experimental (#24)
• Fixed issue with 3.4.1 CPU overclocking would lock up FC's (#28)

From 3.4.1

• Helio target (#5)
• Set FKF as default stage2 filter, removed Runaway Takeoff Prevention (#18)

ButterFlight v3.4.0

Aligned with BetaFlight v3.3.0, 1 minor version bump to indicate addition of FKF/BiquadRC+FIR2 CLI option, lua additions, and AKK SmartAudio fix