Happymodel CrazyF405HD ELRS 1-2S AIO FC (25.5×25.5mm) built-in UART ELRS Receiver and 12A ESC for FPV drone HP-CrazyF405

Happymodel CrazyF405HD ELRS 1-2S AIO FC (25.5×25.5mm) built-in UART ELRS Receiver and 12A ESC for FPV drone HP-CrazyF405

Compatible for Mobula8 2S 85mm Digital HD Micro FPV whoop DJI O3/Walksnail/Hdzero

Description :
A flight controller with a builtin Serial ELRS receiver and 4IN1 BL_S 12A ESC specially developed for Digital HD FPV, which removes the analog OSD chip 7456, optimizes the PCB layout, and supports 1-2S Lipo / LiHV lithium batteries, very Suitable for Digital HD Tinywhoop / Cinewhoop / Toothpick and other small FPV drones. 

The flight controller uses the F405 chip, supports Betaflight/INAV firmware, has 3 sets of complete UARTs available, and integrates a BMP280 barometer and 8Mbp blackbox, which greatly enhances the playability of the flight controller.

Specifications:

Flight controller (V1.1)
MCU: STM32F405RGT6 (168MHZ, 1Mbyte FLASH)
GYRO Sensor: BMI270  (SPI connection)
Mount hole size: 25.5mm*25.5mm
Power supply: 1-2S battery input (DC 2.9V-8.7V)
Built-in 12A(each) Blheli_S 4in1 ESC
Built-in Serial ExpressLRS 2.4GBuilt-in BMP280 Barometer
Built-in 8MBp blackbox
Built-in voltage meter sensor , voltage meter scale 110Built-in current meter sensor , current meter scale 470

Onboard 4in1 ESC
Power supply: 1-2S LiPo/LiPo HV
Current: 12A continuous peak 15A (3 seconds)
Support BLHeli_S Bluejay firmware
Factory firmware: Bluejay ESC V0.19Firmware target: Z-H-30
Default protocol: DSHOT300
When use 1s battery and high KV 0702/0802 motors, should set startup power to 1100/1200

Onboard UART ExpressLRS 2.4GHz Receiver
Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
RF Frequency: 2.4GHz
Antenna: enameled copper wire 31mm length
Telemetry output Power: <12dBm
Default firmware version: ExpressLRS V3.0.1
Firmware target: HappyModel EP 2400 RX
Could update firmware via ExpressLRS configurator

Package Included:
1x Happymodel CrazyF405HD Board
1x Cable Connector  
4x Anti-vibration Ball 
4x Screws

Note :
For original factory 4.3.2 version firmware, if you want to use BMP280 barometer, please connect to betaflight configurator and then move to CLI command, then type the following command:

resource I2C_SCL 2 B10
resource I2C_SDA 2 B11
set baro_bustype = I2C
set baro_i2c_device = 2
save
If you upgrade the firmware to 4.4.2 and want to use BMP280 barometer, please add BPM280 support to custom defines, following the procedure:
1. Enable expert mode on firmware flasher tab
2. Add BARO_BMP280 to custom defines
3. Flash the board
4.Configure resources for external BARO device for the flight controller in CLl:
resource I2C_SCL 2 B10
resource I2C_SDA 2 B11
set baro_bustype = I2C
set baro_i2c_device = 2
save