Joshua Bardwell and RaceDayQuads.com 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, top notch customer support, and an extremely competitive price, the Bardwell F4 AIO Flight Controller is perfect for your quad!
✓ 3-6s F4, AIO board with MPU 6000 gyro
✓ Superb board layout allowing for easy and clean builds
If you are using SmartPort Telemetry wired to the TELE pad, you must go into the CLI and type:
set tlm_halfduplex = off save
Setup Tips For Best Video
When setup appropriately, the Bardwell F4 *should* not need any capacitors in order to have clean video. However, on certain setups it will simply be unavoidable. Here are tips on how to setup your board for best video quality and the least likelihood of needing capacitors for perfect video.
The general idea is that you want to limit your camera and VTX's exposure to noise. I.E. - you want to limit exposure to your Bardwell F4, since the noise is produced by your ESCs, then passed through the Flight Controller to your VTX AND your Camera. A common misconception is that noise shows itself only through the VTX, when in fact it can be shown to your video via your Camera. So, here are our tips:
Can your VTX power your Camera? If yes, power your Camera straight off your VTX 100% of the time. If no, then use the supplied camera power pads on the Flight Controller.
If you aren't using it, don't wire it! Not using OSD or camera control? Then wire your camera's video straight to your VTX (not through the video pads on the FC) and do not wire the camera control.
Now, those two general tips will get you darn close! But what if your video still isn't perfect? Here's what you can do further. First, there are two types of issues. One is noise related, one is power related. Noise looks like clear lines through your video. Power issues look like black lines through your video. For a noise problem, a capacitor will work and you can add it now and ignore the tips below and go fly. For those not wanting to add a Cap or those with a power (black lines) issue, keep reading:
I have a noise (clear lines) issue: Follow steps 1 and 2 above. If still noisy (and you don't want to use a cap), then power your camera off of the same pads as your VTX. If this does not work, then your build requires a cap. Kind of a last resort is considering not using OSD or camera control and then wiring appropriately (depends, would you rather no Cap or no OSD in your build?).
I have a power (black lines) issue: Your VTX is power hungry! This is a known thing with some VTXs, like the Mach 2 and the Unify series. They simply do not do well under regulated power. You can often confirm this by testing power levels. The issue will be worse at 800mw than 25mw. The only fix is to power your VTX directly off of the battery leads. If this does not remove the black lines, you have a defective VTX or a defective Camera. We'd bet it's the Camera that has gone bad before the VTX if you are taking a wild guess. But, if all is good then now you should either A) have clear video or B) have noise (clear lines now instead of black). If you have noise, refer to steps 1 and 2 above. If that does not fix the noise, then your build requires a capacitor.
We hope this has been helpful! Any further questions or issues, please contact us.
Board Layout Quick-Reference
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.
TOP OF BOARD
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.
BOTTOM OF BOARD
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.