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    *Warning this product is not designed for voltages above 4.2V. Use of HV Lipo will cause erratic behavior with the FC

    This 5-in-1 flight controller is inspired by Happymodel's Official Pilot - Angry Don FPV! The Happymodel Diamond F4 AIO 5-IN-1 Flight controller has a built-in VTX, ESC, OSD, and receiver - all on one triangle-shaped whoop board!

    The 3 corners fit 25.5mm whoop mounting spacing.


    • Diamond Mounting Pattern - 22.2x22.2x32.7mm
    • Built-in 5V/1A BEC
    • Built-in SPI Frsky Receiver
    • Built-in Betaflight OSD (SPI Control)
    • Built-in 5A Blheli_S 4in1 ESC, Dshot600 ready
    • Built-in 25-200mW 5.8GHz VTX


    Flight controller

    • (Frsky SPI RX version) DiamondF4 FR FC Firmware target: CrazybeeF4FR
    • MCU: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 SPI Frsky/Flysky receiver
    • Built-in 5V 1A BEC

    Onboard 4in1 ESC

    • MCU 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 Frsky SPI D8 Receiver Version

    • SPI BUS receiver Frsky D8 compatible
    • Compatible Non-EU transmitter D8 model Channels: 8ch
    • Failsafe support
    • No ground interference (Transmitter and receiver 1 m from the ground): 200m~300m

    Onboard 5.8g VTX

    • Output power: 25mw~200mw switchable
    • Frequency: 40CH
    • Input voltage: 3.3V 5.5V
    • Current consumption: 300mA(type)
    • Frequency: 5.8GHz - Smart audio ready


    • 1x HappyModel DiamondF4 FR AIO 5in1 Flight Controller - SPI Frsky
    • 2x Connecting Wire
    • 4x Damping Balls
    • 4x Screws

    Customer Reviews

    Based on 6 reviews
    Morton upshot
    Could use better instructions

    The happy model site has just short of zero info the VTX port was not configured to be accessed in betaflight, and I could find scant info about the fc. Luckily I came upon a review of the mobula7 and caught a glimpse of the ports tab. Issue resolved. I used this to build a rekon3, which is not what the FC was made for, so I understand the rx and VTX range are not able to keep up. Had I build a micro whoop, I would likely love it.

    Joshua Speas
    Very lite, vtx is iffy

    This thing is great... Except I've a couple that the vtx is having issues. Less range, so move them to whoops

    Good idea but...

    I can't understand if the motors are soldered why doesn't the camera have a solder point?


    This has got to be the most worst setup for soldering I have ever seen unless you are a professional at soldering do not buy this board I have never seen this stupid of a design I bought the acrobee 75 was suppose to come with frsky reciever it had crossfire bought new reciever it wouldn't work fc goes to shit then I buy this fc and it's a load of crap I'm out so much money when all I wanted was a 1s drone to fly around the house with my son. I can't believe how difficult this has been for what started as a bnf setup

    Nick Gauthier
    Great weight and value AIO

    I have two of these in my whoops, great value and low weight. I have not had any issues running LiHV on this FC. Easy to flash BF 4.2.9, tune, and go!