Happymodel Crazybee F4 PRO V2.1 2-3S Flight Controller w/ 5A ESC & Compatible Receiver for Sailfly-X RC Drone

Specification:
Brnad Name: Happymodel
Model: Crazybee F4 PRO V2.1
Item Name: Crazybee F4 Flight Controller built-in 5A ESC & Receiver
Optional Receiver Version: Without Receiver/ Compatible Frsky Receiver/ Compatible Flysky Receiver
/ Compatible DSM2/DSMX Receiver
MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
Sensor: MPU-6000(SPI connection)
Board size: 28.5 * 28.5MM
Power supply: 2-3S battery input (DC 7.4-13V)
Built-in 5A(each) Blheli_S 4in1 ESC Dshot600 ready
Built-in Receiver ( Diffirent version having diffirent receiver, without receiver version doesn't have rx)
Built-in Betaflight OSD(SPI Control)
Built-in Current meter Max 28A
Current meter scale set to 1175
Built-in 5V 1A BEC with LC filter
Built-in voltage detection
Firmware
(Frsky version) CRAZYBEE F4FR PRO V2.1 Firmware target: CrazybeeF4FR
(Flysky version) CRAZYBEE F4FS PRO V2.1 Firmware target: CrazybeeF4FS
(DSM2/DSMX version) CRAZYBEE F4DX PRO V2.1 Firmware target: CrazybeeF4DX
(No RX version) CRAZYBEE F4 PRO V2.1 Firmware target: CrazybeeF4DX

Onboard 5A 4 In 1 ESC

MCU upgraded to EFM8BB21

Power supply: 2-3S LiPo/LiPo HV (7.4v/13v)

Current: 5A continuous peak 6A (5 seconds)

Support BLHeliSuite programmable

Factory firmware: S_H_50_REV16_7.Hex

Default protocol: DSHOT600

Onboard Receiver
Frsky version: Built-in SPI Frsky receiver with telemetry(D8/D16 switchable)
Compatible both Non EU and EU-LBT transmitter Channels: 8ch or 16ch

EU-LBT support(need to update betaflght v4.0 date 2019-04-11)

Failsafe support

No ground interference ( Transmitter and receiver 1 m from the ground): 300m

Flysky version: Protocol: AFHDS and AFHDS-2A Switchable

Channels: 8ch(AFHDS) or 14ch(AFHDS-2A)

No ground interference ( Transmitter and receiver 1 m from the ground): 300m

Failsafe support

DSMX version: Protocol: DSM2/DSMX compatible
Channels:6-9 (Depend on your radio)
No ground interference ( Transmitter and receiver 1 m from the ground): 300m

No RX version: No RX version support external serial-bus receiver like xm+, crossfire, S-FHSS etc

Package Included:
1x Happymodel Crazybee F4 PRO V2.1 Flight Controller