Your Cart
Warehouse Open for Click and Collect orders
Mon - Fri (1630 - 1800)   Sat(0900 - 1230)

Happymodel CrazyF4 ELRS AIO 5in1 Flight controller built-in 915MHz ELRS RX

915MHZ version for use in Australia

The World first AIO 5in1 whoop flight controller built-in Expresslrs receiver is coming out now. This F4 flight controller built-in 5A esc , VTX, OSD , high performance 900MHz expresslrs receiver, it’s best for 1S Long Range and Tinywhoop.


Flight controllerMCU:STM32F411CEU6 (100MHZ, 512K FLASH)
Sensor: MPU-6000(SPI connection)
Original whoop size compatible
Power supply: 1S battery input (DC 2.9V-4.35V)
Built-in 5A(each) Blheli_S 4in1 ESC Dshot600 ready
Built-in Betaflight OSD(SPI Control)
Built-in 5.8G VTX
Built-in Serial-based ExpressLRS 900MHz receiver(915MHz or 868MHz optional)
Built-in 5V 1A BEC
Flight controller firmware target: CRAZYBEEF4DX
Onboard 4in1 ESCMCU upgraded to EFM8BB21
Power supply: 1S LiPo/LiPo HVCurrent: 5A continuous peak 6A (3 seconds)
Support BLHeliSuite programmable
Factory firmware: O_H_5_REV16_8.HEX
Default protocol: DSHOT600
Onboard Serial-based ELRS ReceiverOperation current: ~100Ma
Rx To FC protocol: CSRF
RF Frequency optional: 915mhz or 868mhz(EU)
Antenna connector:  IPEX4
Telemetry output Power: <17dBmFirmware target: Happymodel_RX_ES915RX
Receiver protocol: CRSF
Could bind with Happymodel ES915TX , Frsky R9M and DIY ELRS TX module(need to flash the same version ELRS firmware)
Firmware flash via Betaflight pass-through
Onboard 5.8g VTXOutput power: 25mw~200mw switchable
Frequency: 40CH
Input voltage: 3.3V 5.5V
Current consumption: 300mA(type)
Frequency: 5.8GHz 5bands 40 channels(include Race band)Smartaudio ready
Onboard voltage and Amperage meters  settingsVoltage meter scale setting 110
Amperage meter scale setting 1175

Bind procedure:

  1. Supply power to CrazyF4 ELRS flight controller (Plug the USB), wait until the RX LED is off, immediately turn off the power (Unplug the USB), and then repeat the above steps again. When the RX is powered on for the third time, the LED light will start to double-flash, which means that the RX enters into the binding mode
  2. Insert the ES915TX module or other DIY 2.4G ELRS TX to your OpenTX Radio transmitter, and choose External RF mode to CRSF protocol, then you can find ELRS menu from the Radio system (Need to copy the ELRS.LUA file to the SD-Card tools first), Enter into ELRS and press [Bind], the RX LED on the Flight controller will getting to be solid if bind successfully.
  3. Receiver LED status meanings:LED solid means bind successful or Connection established; LED double-flash means in bind mode; LED flash slowly means no signal established with the TX module

Notes: Don’t make the antenna plug get touch with the Motor solder pins, otherwise it would burnt the ESC.

Write a review

Please login or register to review