Happymodel CrazyF411 PRO AIO F4 FC built-in 20/25A ESC OSD/Frsky diversity receiver for Toothpick

CrazyF411 pro is a highly packed 6.3g 2-4S AIO F4 flight controller with built in 20/25A per channel ESC and diversity receiver.
Low latency D8/D16 Futaba S-FHSS Redpine protocol with dual IPEX UFL Antenna (with Power amplifier)
Large soldering pads with 4 angled motor connector (not soldered)
2 complete UART (UART 1 with inverted PX pad)
Compatible with 110x/120X/130X/140X motors
Integrated with F411 processor, Betaflight OSD, 5V 1.5A BEC

Bind procedure:

1. Make the on board receiver get into 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 on the top of the flight controller will getting to be solid , the onboard receiver is in bind mode; For 4.1.x or 4.2.x the bind code is “bind_rx”
2. Make your 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 actual successful , need to go to CLI command and type “save” to finish the binding .

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