F4 1S 12A AIO Brushless Flight Controller V2.2 is the default FC forCetus X brushless whoop quadcopter, also great for85mm whoop drones likeMeteor85and3″ toothpick drones like HX115 SE Toothpick Drone and HX115 LR Toothpick Drone.We updated the FC to V2.2 with BMI270 gyro and BB51 ESC hardware in place of ICM20689 gyro and BB21 ESC hardware.

Check out all ourWhoop Style AIO Flight Controllersand the rest of ourBetaFPV Products!

Features:

• F4 1S 12A AIO Flight Controller is the best choice for building ultra-lightweight3″ toothpick drones like HX115 SE FPV Quadand85mm whoop drones. RecommendMeteor85.
• Most of the 1S flight controllers on the marketcome with 5A ESC by now, butthis FC especially integrates 1S 12A ESC,providing more sufficient power for3″ toothpick drones or 85mm whoop drones.
• Built-in current meter, 2 programmable RGB LEDs, and SPI ELRS or Frsky receiver. At the same time, all the pads are left for the external receivers with UART1 and UART2, for buzzers, etc.
• Large pads are reserved for solder motor cables, this design will make solder easier.

Specification of FC

• Item:F41S12AAIOFC
• Weight:4.74 g(withoutpowercableandBT2.0connector)
• CPU:STM32F411CEU6(100MHZ)
• Six-Axis: BMI270 (SPIconnection)
• Firmwareversion: betaflight_4.3.1_BETAFPVF4SX1280
• OSD:Built-inBetaFlightOSD(STM32controlsOSDchipoverSPIinDMAmode)
• Receiver: SPI ELRS 2.4G Receiver
• MotorPinConnector:1.25mmHeaderPins
• MountingHoleSize:26mmx26mm (suitableforwhooppatternmountinghole)
• USBPort: SH1.0 4-Pin

Specification of 1S 12A ESC

• Built-inESCwith12Acontinuousandpeak25Acurrent
• Inputvoltage:1S-2S
• ESCfirmware: C_X_30_REV16_7.hex for BB51 BLHeli_S hardware
• Signalsupport: D-shot150, D- shot300, D-shot600, Oneshot125, Multishot, PWM

The BLHeli_S firmware could support the BB51 hardware now. This V2.2 board is powered by BB51 hardware.If you want to setup the ESC specification, please use the BLHeliSuite16714902A_Beta orESC-Configurator.

• ESC-Configurator:https://preview.esc-configurator.com/
• Download BLHeliSuite16714902A_Beta here.
• Download the BB51 ESC firmware C_X_30_REV16_7.HEX. Please choose C_X_30.

Note:BetaFlight Configurator, BLHeli Configurator, and Bluejay Configurator are invalid for the BB51 ESC now.

Diagram for F4 1S 12A AIO FC

Below is the diagram for ELRS 2.4G V2.2 board.

The current meter is integrated on the FC board. Here is the configuration in Betaflight Configurator.

12A 1S ESC

Should we really need a 12A ESC for 1S drones? If it is a 65mm or 75mm Whoop drone-likeMeteor65, 5A ESC is enough for all actions. But how about with 3″ propellers and 1102/1202.5 motors? Still, want smooth and powerful flying actions? The 5A ESC has developed about 3 years ago and was designed for whoop drones with 0603/0802 motors. For the past year, the BETAFPV team has been cooperating with BLHeli author Steffen on the 12A 1S ESC for 3″ toothpick drones. Finally, it is here!

SPI ELRS 2.4G RX

This board integrates the receiver with the most popular radio link ExpressLRS since 2021. ExpressLRS aims to achieve the best possible link performance in both speeds, latency, and range. Know more about the ExpressLRSproject onGithubor join the discussion in theFacebook Group.

F4 1S 12A AIO V2.2 integrates SPI ELRS 2.4G RX. The configuration is as follows.

How to Bind with Betaflight FC with SPI ExpressLRS Receiver.

How to Bind with Betaflight FC with External ExpressLRS Receiver.

More details and discussion on Github about SPI ELRS receiver.

BetaflightFirmware and CLI

F4 1S 12A AIO SPI ELRS 2.4G comes with the default firmware betaflight_4.3.1_BETAFPVF4SX1280, which supports ELRS V2.0 only. We update the gyro to BOSH BMI270 since the V2.2 version.

Pay attention,ONLY the newest Betaflight firmware 4.3.1 start to support this BMI270 gyrometer.Please check the below link to download the firmware.

Download the firmware and CLI dump file for the F4 1S 12A FC (ELRS 2.4G) V2.2 board.

Package

• 1 * F4 1S 12A AIO FC
• 4 * Anti-vibration Rubber Dampers
• 4 * M2 x 10mm Screws
• 4 * M2 x 10mm Screws
• 4* M2 Screw Nut
• 8* PH-1.25 Connectors for Motor
• 1 * SH1.0 4-Pin Cable
• 1 * SH1.0 4-Pin to USB Type-C Adapter