25.5x25.5mm Happymodel CrazybeeX FR/FS/PNP V2.2 F4 1-2S Flight Controller AIO 5A ESC 5.8G 25-200mW VTX & RX Introduction: CrazybeeX series flight controller is the first 5in1 AIO flight controller which could handle 2s. It's a better upgrade flight controller for your whoops. - Use to build a 1-2S compatible lightest 65mm/75mm/85mm brushless whoop or 2-3 inch ultra light toothpick. Specification: Brand: Happymodel Model: CrazybeeX FR/FS/PNP V2.2 Item Name: F4 Flight Controller AIO ESC VTX Receiver Board Weight: 4.4g Features: CrazybeeX FR V2.2 Bind procedure: Make the on board receiver get into bind mode: Plug USB and then press the bind button for 1 second , the Red LED on the top of the flight controller will getting to be solid , this indicate the receiver is in bind mode; Or use bind code to bind :For 3.5.7 version firmware Plug USB and then connect Betaflight configurator and then move to CLI tab , type “Frsky_bind”, the Red LED on the top of the flight controller will getting to be solid , the onboard receiver is in bind mode; For 4.0.x the bind code is “bind_rx_spi” ,For 4.1.x or 4.2.x the bind code is “bind_rx” Make your Frsky transmitter get into bind mode . If bind is successful the red led will starting to blink. The red LED wouldn't blinking when binding with some new ACCESS firmware frsky radio , but the bind is actually successful , need to go to CLI command and type “save” to finish the binding . CrazybeeX FS V2.2 Bind procedure: Make the on board receiver get into bind mode: For 3.5.7 version firmware Press and hold the bind button for 1 second ,then plug USB, the Red LED at the bottom of the flight controller will blinking fast , this indicate the receiver is in bind mode; For 4.0.x version firmware Plug USB and then connect betaflight configurator and then move to CLI tab , type “bind_rx_spi” ,the Red LED at the bottom of the flight controller will blinking fast , the onboard receiver is in bind mode; For 4.1.x or 4.2.x the bind code is “bind_rx” Make your Flysky transmitter get into bind mode . If bind is successful the red led will getting to be solid. SPI Receiver option: Frsky_D compatible with Frsky D8 protocol Frsky_X compatible with Frsky non-eu D16 protocol Frsky_X_LBT compatible with Frsky EU-LBT D16 protocol (4.0.X or latest betaflight firmware support) SFHSS compatible with Futaba S-FHSS protocol A7105_FLYSKY_2A compatible with Flysky AFHDS-2A protocol A7105_FLYSKY compatible with Flysky AFHDS protocol Package Included: 1x CrazybeeX FR / FS / PNP V2.2 Version Flight Controller 1x Cale 1x bag of Screws & Standoffs