Joshua Bardwell F4 Flight Controller AIO V1.3
Joshua Bardwell F4 Flight Controller AIO V1.3

Joshua Bardwell F4 Flight Controller AIO V1.3

Joshua Bardwell

Regular price $55.95 Sale

Joshua Bardwell F4 Flight Controller AIO V1.3

Joshua Bardwell and Race Day Quads have come together to make the industry’s next favorite flight controller. With the latest features, a layout which will make your build clean and easy and an extremely competitive price, the Bardwell F4 AIO Flight Controller is perfect for your quad!

Changes in version 1.3 include:

  • 16 MB dataflash chip for Blackbox logging instead of SD card reader.
  • RX4 pad at corner for ESC telemetry
  • TX6 pad added so there is one additional UART for general-purpose use
  • 5v pad near LEDstrip pad changed to vBat so there is a convenient vBat pad on top of the board. Use Buzzer+ for 5v if need be or there is a 5v pad on the bottom of the board.

Version 1.3's JST connector's pinout is:

  • VBat - Current - GND - NC - M1 - M2 - M3 - M4



  • 3-6s F4, AIO board with MPU 6000 gyro
  • Superb board layout allowing for easy and clean buildsBetaflight
  • Joshua Bardwell authored manual and selected features
  • Centrally located gyro
  • Betaflight OSD w/131a current sensor
  • Compact 30.5x30.5 board layout
  • 9v filtered power out for VTXs – very strong filtering capability for clean video (the 5v output is also filtered) 
  • Power Out: 3x 5v, 1x 3.3v, 1x VBAT, 1x VTX filtered power (9v), 1x Camera filtered power (9v); 
  • 4x UARTS for FRSKY, SBUS, IBUS, SAT (2 inverted UARTS)
  • Smart Audio compatibility and Camera Control capability
  • Pre-flashed with BF 3.2.2 - Compatible with CLRACINGF4.hex
  • Programmable LED pin
  • Buzzer pins
  • Blackbox capability
  • No pinned-connectors – all direct solder for optimal durability
  • Included and installed vibration dampeners
  • 7.29g Weight



J.BARDWELL Flight Controller F4 Rev2.1



The table below shows the intended purpose of each of the pads on the board. Detailed instructions for wiring up the board are later in the manual.



Battery voltage negative, wired to ESC.


Battery voltage positive, wired to ESC.



S1, S2, S3, S4

Motor signal outputs 1-4.


Serial receiver (SBUS, iBus, SpekSat) input. UART1. Can be used with both inverted and non-inverted protocols, but iBus telemetry and SpekSat binding don’t work on this pad. Can also be used for ESC Telemetry if you’re freaky like that.


SmartPort telemetry input (inverted) UART3.


5v or 3.3v output for receiver. Use solder bridge on underside of board to select voltage.


7.6v filtered output for FPV camera and vTX. Max 1.2 amps.


UART6 receive pad. Use this for non-inverted receiver input such as iBus or SpekSat. iBus telemetry and SpekSat binding work on this pad. Can also be used for other receive functions like ESC telemetry.


Video signal input from FPV camera.


FPV Camera OSD Menu Remote Control function. Connect to camera OSD input pin.


Programmable LED output pin. Usable with Betaflight LEDStrip feature. Also, can be reassigned to SoftSerial via Betaflight resource remapping feature to provide one additional UART

TX4 / RX4

UART4 TX and RX pads. TX4 is primarily intended for use with vTX remote control function such as SmartAudio or Tramp Telemetry.  UART4 is the only one UART on the board with both TX and RX pads available. If UART4 is needed for some other purpose, reassign LED pad to SoftSerial and use vTX remote control that way.


Negative leg of piezo buzzer.


Positive leg of piezo buzzer.


Video out to FPV video transmitter.




5v output for accessory devices. Max 1.2 amps total across all 5v pads.


Main battery lead positive wire.


Main battery lead negative wire.


Solder bridge for selecting 5v or 3.3v output to receiver pad on top of board.