All flight controllers flashed and tested with newest firmwre before shipping, Departing from Florida, U.S.A.  

BlueJayF4 – F4 Racing Flight Controller (rev4.)

BlueJayF4 – F4 Racing Flight Controller (rev4.)


There was no simple F4 based board out there at the time to operate in place of the simple F1 based flight controllers. This is the FC designed for those wanting F4 performance but maintaining the F1/3 simplicity - i.e. it comes with non of the extra trimmings - it's bare bones - it's acro you might say .

Features / Specification (based on rev2)

  • Runs Raceflight (fork of Cleanflight with F4 support)
  • Buzzer output
  • Voltage Sensor (off battery input)
  • Has outputs for up to 6 ESCs
  • Serial or PPM input (does not support individual PWM channel input)
  • MicroSD Card support for BlackBox (FAT file system experimental in Raceflight)
  • Three available hardware UART ports
  • Built in inverter for SBUS input
  • Tactile button for booting to STM boot loader
  • Standard pin headers for the majority of connections
  • SWD via JST (on the base of the board – connector not fitted)
  • i2c available via through hole micro pin header
  • STM32F405 32-bit processor at 168MHz, 1Mb flash, 192kb ram
  • MPU9250 Gyro/Accelerometer/Mag connected via SPI (note Mag is work in progress in Raceflight)
  • MS5611 Barometer (optional)
  • Micro USB connectivity using STM Virtual Communications Port
  • 36mm x 36mm (standard 30.5mm between mounting holes)