Use in reference to the open-source multirotor and fixed-wing flight controller firmware maintained by the community.

Currently supporting flight controllers equipped with STM32F4 (F4, ), STM32F7 (F7, ) and STM32H7 (H7, ) processors as well as legacy releases targeting STM32F1 (F1, ) and STM32F3 (F3, ) processors, Betaflight is a very versatile multirotor and fixed wing firmware. Quoting the Betaflight GitHub README.md file:

Betaflight is flight controller software (firmware) used to fly multi-rotor craft and fixed wing craft.

This fork differs from Baseflight and Cleanflight in that it focuses on flight performance, leading-edge feature additions, and wide target support.

and:

Betaflight has the following features:

  • Multi-color RGB LED strip support (each LED can be a different color using variable length WS2811 Addressable RGB strips - use for Orientation Indicators, Low Battery Warning, Flight Mode Status, Initialization Troubleshooting, etc)
  • DShot (150, 300, 600 and 1200), Multishot, and Oneshot (125 and 42) motor protocol support
  • Blackbox flight recorder logging (to onboard flash or external microSD card where equipped)
  • Support for targets that use the STM32 F7, F4 and F3 processors
  • PWM, PPM, and Serial (SBus, SumH, SumD, Spektrum 1024/2048, XBus, etc) RX connection with failsafe detection
  • Multiple telemetry protocols (CSRF, FrSky, HoTT smart-port, MSP, etc)
  • RSSI via ADC - Uses ADC to read PWM RSSI signals, tested with FrSky D4R-II, X8R, X4R-SB, & XSR
  • OSD support & configuration without needing third-party OSD software/firmware/comm devices
  • OLED Displays - Display information on: Battery voltage/current/mAh, profile, rate profile, mode, version, sensors, etc
  • In-flight manual PID tuning and rate adjustment
  • Rate profiles and in-flight selection of them
  • Configurable serial ports for Serial RX, Telemetry, ESC telemetry, MSP, GPS, OSD, Sonar, etc - Use most devices on any port, softserial included
  • VTX support for Unify Pro and IRC Tramp
  • and MUCH, MUCH more.