FrSky R9 MM-FC (OMNIBUS F4 V6) Flight Controller

FrSky R9 MM-FC (OMNIBUS F4 V6) Flight Controller

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FrSky R9 MM-FC (OMNIBUS F4 V6) Flight Controller

$50.99 $25.99

Status: In stock

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$50.99 $25.99

Note: Please upgrade the compatible R9M / R9M Lite module with the latest firmware simultaneously, and rebind the devices after the update.

The FrSky 900MHz R9 MM-FC (OMNIBUS F4 V6) uses the MPU6000 over SPI to produce stable flight performance. Integrated with the R9 MM receiver mounted on-board in a protection box. It also features a barometer and AB7456 OSD chip for the Betaflight integrated OSD.



  •  R9 MM Receiver
  •  STM32 F4 Processor
  •  MPU6000 Gyro via SPI
  •  BMP280 Barometer
  •  Integrated Betaflight OSD
  •  5 UART Ports
  •  Direct plugin 3-6S Lipo
  •  Built in LC Filter
  •  5V 1000mA BEC
  •  8V 1000mA BEC
  •  More caps to reduce gyro power noise



  •  STM32 F405 MCU, Runs Betaflight firmware (supported from v3.2)
  •  FrSky R9 MM receiver in protection box
  •  MPU6000 over SPI Bus
  •  30.5×30.5 mm mounting holes
  •  Supports Lipo direct plug-in (3-6S)
  •  Supports 5V 1A BEC output (Buck)
  •  Supports 8V 1A BEC with LC filter output for the camera and VTX (Buck)
  •  STM32 controls OSD chip over SPI in DMA mode (Betaflight OSD)
  •  The R9 MM-FC (OMNIBUS F4 V6) supports 3-6s Lipo direct input, and has 5 hardware UARTs


Download FrSky R9 MM-FC (OMNIBUS F4 V6) Relevant Files


Q: How to setup the F.Port for R9 MM-FC (OMNIBUS F4 V6)?

A: Choose and flash the FW in Betaflight: OMNIBUSF4FW

      Paste command to CLI:

feature RX_Serialset


set align_board_roll = 180

set serialrx_provider = FPORT

set serialrx_inverted = ON

set serialrx_halfduplex = ON


serial 0 64 115200 57600 0 115200