F4 1S 12A AIO Brushless FC V3, the FIRST flight controller designed specifically for HD VTX. This powerful controller features an STM32F405/AT32F435 chip for high-performance calculations and a 5V 3A BEC solution for the HD VTX. It weighs only 4.2 grams and includes a Serial ELRS 2.4G receiver, 16MB Black Box, Barometer, and Current meter. Designed for HD VTX, it removes the OSD chip AT7456E and also added support for external GPS through Betaflight 4.4.0.
Bullet Point
F4 1S 12A AIO Brushless FC V3 is specially designed for HD VTX, the MCU with stronger performance and computing power, and the new BEC solution with 5V 3A output supports HD VTX power supply.
Integrate Serial ELRS 2.4G receiver, 16M black box, barometer, current meter, reserve 2 complete serial ports, and 1 standard SBUS. It is compatible with various devices such as GPS, HD VTX, and external receivers, which reduces the overall weight and complexity of the build.
With a lighter weight of 4.2g, it improves flight performance and agility.
There are 2 main control MCUs available: the STM32F405 and the AT32F435. The AT32F435 has a stronger performance, with a COREMARK score that is even comparable to that of the STM32F722.
Mounting Hole Size: 26mm x 26mm (suitable for whoop pattern mounting hole)
BEC*: 5V 2A@4V supply, 5V 3A@8V supply
USB Port: SH1.0 4-Pin
Built-in ESC with 12A continuous and peak 25A current
ESC input voltage: 1-2S
ESC firmware: C_X_70_48_V0.19.2.hex for BB51 Bluejay hardware
Signal support:D-shot300, D-shot600
Weight: 4.23g (without motor connectors) / 4.68g (with motor connectors), excluding power cable
*The output current of BEC will decrease as the temperature increases
Light Version
Classical Version
Weight
4.23g
4.68g
Motor Connectors
Not Solder
Soldered
Diagram for F4 1S 12A AIO FC V3
Comparison
The F4 1S 12A V3 FC is specifically designed for HD VTX and features an upgraded STM32F405/AT32F435 chip forhigh-performance calculations. It also includes a Serial ELRS 2.4G receiver for increased range and reliability, as well as a 16MB Black Box for easy flight data recording and analysis. These upgrades aim to enhance the overall flying experience for pilots.
ATBetaflight is a fork ported to Artery Tek AT32F435/7 based on betaflight 4.3. The biggest difference from the Betaflight firmware is that the sensitivity of the BMI270 gyroscope is optimized, and the measured sensitivity error is reduced from about 2% to less than 0.04%, which is consistent with the specification table in the datasheet. Phenomena such as "horizon drift" and "wrong direction of GPS rescue" basically no longer appear in the actual flight.
The current release of ATBetaflight 4.3.2 RC3 already supports all hardware functions but does not support the new functions or optimization problems of subsequent versions of Betaflight 4.3.1. For more information, please refer to: https://github.com/flightng/atbetaflight
Pay attention, DO NOT flash the other firmware for AT32F435 version. Betaflight official firmware for the AT32F435 is still in the development process, only the currently released ATBetaflight 4.3.2 RC3 has bidirectional Dshot, PRM, and RGB functions.
If you need to use the Betaflight configurator, please use Betaflight_10.10.0 and follow the steps below to open the "Show all serial devices" in the "Options" first to recognize the port.
With BB51 ESC solution, F4 1S 12A FC V3 is based on BLHeliSuite16714903 with Bluejay ESC firmware, it supports bidirectional D-shot and RPM filtering in Betaflight, offers 24KHz, 48KHz, and 96KHz fixed PWM frequency for options, and custom start-up melodies. F4 1S 12A FC V3 default factory setting is 48KHz and it doesn’t recommend upgrading the 96KHz, or it might cause an error in the motor idle setting, not spinning when disarmed.
DO NOT flash the firmware with a shorter interval, otherwise, there will be a certain chance of stalling and burning the flight controller.
Serial ELRS 2.4G RX uses the Crossfire serial protocol (CRSF protocol) to communicate between the receiver and the flight controller board. So the Serial ELRS 2.4G RX is available to support upgrading to ELRS V3 with no need to flash Betaflight flight controller firmware.
Enter binding status by power on/off three times.
Plugin and unplug the flight controller three times;
Make sure the RX LED is doing a quick double blink, which indicates the receiver is in bind mode;
Make sure the RF TX module or radio transmitter enters binding status, which sends out a binding pulse;
If the receiver has a solid light, it's bound.
The Serial ELRS 2.4G RX can be updated via Wi-Fi or Betaflight serial passthrough. Here is the way to update the Serial ELRS 2.4G RX firmware through passthrough.
Plug in your FC to your computer, but do NOT connect to betaflight configurator.
Choose target "BETAFPV 2.4GHz AIO RX".
Flash using the BetaflightPassthrough option in ExpressLRS Configurator.
Both STM32F405 and AT32F435 version support external HD digital VTX. Please note that the board reserves two serial ports and a standard SBUS port, which is available for the external CRSF protocol receiver or GPS module, and SBUS protocol receiver. You can refer to the below picture.
Recommend Parts
If you want to try the popular ExpressLRS receiver version for long-range performance, highly recommend you check the items for the ExpressLRS series.
I really like this radio but I had a gimbal stick pull out without any pulling on it. I've had this happen with other name brand radios so it's not a surprise or let down. A little super glue and right back at it. It feels great! I love the full sized gimbals! I have the zorro and the boxer but I think this one is the right fit for me.
Handy as a second transmitter for travel, tiny whoops, etc
Surprisingly good for the price especially with ELRS. It has just enough switches that I can do most of what I can with the TX16S, and it's so much easier to throw in a bag and go. My only wish is that I could put the thumb-grippies style of stick ends on it easily (and still remove them for storage), but maybe someone will come up with an adapter or similar. Next step is to try a Gemini ELRS nano module and see what kind of range is possible on that.
