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Specialist in Multirotor Tech & FPV Equipment

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Happymodel Crazybee F4 PRO V3.0 Flight Controller / ESC - SPI RX FrSky EU LBT

Happymodel Crazybee F4 PRO V3.0 Flight Controller / ESC - SPI RX FrSky EU LBT


Only 1 left in stock

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The CrazyBee F4 is a compact 2-4S brushless F4 flight controller with integrated 4in1 ESC, BetaFlight OSD, and 2.4G receiver all on the same board. You only need to add motors, VTX and Camera to complete your setup. It’s one of the most popular FCs for Tiny Whoops, Toothpick Drones and Micro Drones.

This is the latest revision of the board which features an updated MCU from STM32F303 to STM32F411 and also with an extra UART added, making it with two UARTs in total. It also now includes a built-in current sensor and uprated 10A per channel ESC.

Note: For 3inch propellers, we recommend using 2-3S only.


We sell the FC with a choice of a SPI  receivers - FrSky or FlySky. The FrSky version is preset to EU LBT, but can be set to FCC D8 or D16 in BetaFlight.

  • Processor: F4 MCU
  • Gyro: MPU6000 IMU
  • Built-in Betaflight OSD
  • Weight: 4.3g
  • Board size: 28.5×28.5mm
  • Input Voltage: 2S – 4S LiPo (7V – 17V)
  • Built-in Blheli_S 4in1 ESC
    • ESC Current Rating: continuous 10A, burst 12A (each motor)
    • ESC MCU: EFM8BB21
    • ESC Protocol: Dshot600
    • ESC can be flashed and configured using BLHeliSuite via FC passthrough
    • ESC firmware: F_H_40_REV16_5.HEX
  • Built-in RX and No RX options available:
    • Frsky SPI receiver with telemetry (D8/D16 switchable)
    • Flysky SPI receiver with telemetry (AFHDS/AFHDS-2A Compatible)
    • Spektrum DSM2/DSMX compatible satellite receiver (Default RX2 was used for DSM2/DSMX receiver)
    • The “No RX” version supports external serial receiver such as XM+, Crossfire, S-FHSS and DSM2/DSMX, iBus
  • Built-in Current sensor with maximum capacity up to 70A
    • Please set Current Meter Scale to 470
  • Built-in 5V 1A voltage regulator with LC filter for clean FPV Video
  • Built-in voltage detection

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