Take your FPV experience to new heights with the HappyModel CrazyF405 ELRS HD 1 - 2S AIO Flight Controller!
• Built - in Serial ELRS receiver for seamless connectivity.
• 4in1 12A ESC for powerful performance.
• Optimized layout, perfect for Tinywhoop/Cinewhoop/Toothpick.
It's a must - have for racing and freestyle enthusiasts. Compatible with Betaflight/INAV. With 3 sets UARTs, 5V/3A & 9V BECs, and barometer, elevate your flight performance now!
Specifications:
- Brand Name: Happymodel
- Item Name: CrazyF405HD ELRS 1 - 2S AIO Flight controller
- Mount size: 25.5mmx25.5mm
- Weight: 4.8g without power lead wire
- Firmware target: BetaflightF4
- Support 1 - 2S Lipo/LiHV battery
FLIGHT CONTROLLER
- Built - in voltage meter sensor, voltage meter scale 110
- Built - in current meter sensor, current meter scale 470
- MCU: STM32F405RGT6 (168MHZ, 1Mbyte FLASH)
- Power supply: 1 - 2S battery input (DC 2.9V - 8.7V)
- GYRO Sensor: BMI270 (SPI connection)
- Built - in 12A(each) Blheli_S 4in1 ESC
- Built - in Serial ExpressLRS 2.4G
- Model: Crazy F405 ELRS HD
- Built - in BMP280 Barometer
- Built - in 8MBp black box
ONBOARD UART ELRS 2.4GHZ RECEIVER
- Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
- Could update firmware via ExpressLRS configurator
- Antenna: enameled copper wire 31mm length
- Default firmware version: ExpressLRS V3.0.1
- Firmware target: HappyModel EP 2400 RX
- Telemetry output Power: <12dBm
- RF Frequency: 2.4GHz
ONBOARD 4 - IN - 1 ESC
- Current: 12A continuous peak 15A (3 seconds)
- Factory firmware: Bluejay ESC V0.19
- Support BLHeli_S Bluejay firmware
- Power supply: 1 - 2S LiPo/LiPo HV
- Default protocol: DSHOT300
- Firmware target: Z - H - 30
- *When using 1s battery and high KV 0702/0802 motors, should set the startup power to 1100/1200
Includes
- 1x HappyModel Crazyf405 ELRS HD 1 - 2S AIO Whoop/Toothpick Flight Controller w/ 12A 8Bit 4in1 ESC & ELRS 2.4GHz RX
- 1x Power lead with a XT30 Connector
Wiring Diagram





This HappyModel CrazyF405 ELRS HD 1 - 2S AIO Flight Controller is perfect for FPV enthusiasts into racing and freestyle. The mount size is 25.5mmx25.5mm and it weighs 4.8g without the power lead wire. It supports 1 - 2S Lipo/LiHV batteries. Use it for Tinywhoop, Cinewhoop, or Toothpick setups and take your flights to the next level with its great features.