F4 1S 12A AIO Brushless Flight Controller V2.2 is the default FC for Cetus X brushless whoop quadcopter, also great for 85mm whoop drones like Meteor85 and 3" 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.
 
Bullet Point
F4 1S 12A AIO Flight Controller is the best choice for building ultra-lightweight 3" toothpick drones like HX115 SE FPV Quad and 85mm whoop drones. Recommend Meteor85.
Most of the 1S flight controllers on the market come with 5A ESC by now, but this FC especially integrates 1S 12A ESC, providing more sufficient power for 3" 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: F4 1S 12A AIO FC
Weight: 4.74 g (without power cable and BT2.0 connector)
CPU: STM32F411CEU6 (100MHZ )
Six-Axis: BMI270 (SPI connection)
Firmware version: betaflight_4.3.1_BETAFPVF4SX1280 (ELRS) /betaflight_4.2.11_BETAFPVF411RX (Frsky)
OSD: Built-in BetaFlight OSD (STM32 controls OSD chip over SPI in DMA mode)
Receiver: SPI ELRS 2.4G Receiver/SPI Frsky
Motor Pin Connector: 1.25mm Header Pins
Mounting Hole Size: 26mm x 26mm (suitable for whoop pattern mounting hole)
USB Port: SH1.0 4-Pin
Specification of 1S 12A ESC
Built-in ESC with 12A continuous and peak 25A current
Input voltage: 1S-2S
ESC firmware: C_X_30_48_V0.18.1.hex for Bluejay BB51 hardware
Signal support: D-shot150, D- shot300, D-shot600, Oneshot125, Multishot, PWM
 
 
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.
Drones: Cetus X, 85mm whoop frame like Meteor85, Meteor85 HD, 3" toothpick drones
Battery: BT2.0 450mAh 1S 30C Battery, 450mAh 2S 45C Battery
Motor: 1102 18000KV motor, 1103 11000KV motor
Propeller: HQ3020 2-blade Props, 2020 4-blade Props
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