Raceflight Betaflight CC3D REVO F4
STM32F405 Flight Controller with Vbat/Buzzer.

New generation F4 hardware flight controller for FPV race, STM32F405 MCU ,
Frequency up to 168Mhz ,Flight controller firmware is pushing flight controllers to the limit.
Fast loop times enable sophisticated filtering to deliver the locked in, flying on rails feeling.
Betaflight easily delivers 125us (or faster) loop times on the F4 flight controller
 
Betaflight target :   Revo or AirbotF4
 
Features:
Buzzer Port and LED strip Port
MPU6000 SPI Bus
128Mb Flash(16M Byte)
SBUS/PPM input (Pinheaders)
DSM/DSM2/DSMX input(Plug)
6PWM output (Pinheaders)
Only 36x36mm, mount holes 30.5x30.5mm
All through hole pin header Design  -no Sh connectors
STM32 F405 MCU, Runs Raceflight CC3D REVO firmware
Works Perfect with Raceflight - preloaded with Raceflight or BetaFlight 3.0
direct Lipo input :1.5A  Built-in onboard regulator - NO BEC needed.
Connect direct to a Lipo to power the board and Rx
RaceFlight or Betaflight support on an STM32 F3 with a SPI based MPU6000
gyro - low noise gyro will not force one to soft-mount the fc.