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.          The world's first AIO integrated F4 flight controller with integrated 900MHz ExpressLRS receiver has been launched. The flight controller integrates Dshot esc, 5.8GHz 40ch analog image transmission, ELRS 900MHz receiver and Betaflight OSD. Ultra-small size, ultra-long remote control distance Improve the problem of the short distance of the original integrated flight control SPI receiver. At the same time, the flight controller is also very suitable for 1S long-distance aircraft. For example, when used on long-distance aircraft, you can disconnect the Smartaudio onboard image transmission and connect GPS to UART2.          Linking steps:     1. Power the flight controller through USB connection. After inserting the USB for the first time, disconnect the USB as soon as the receiver LED on the flight controller goes out. Repeat the operation once, the receiver LED will start to flash double after the USB is plugged in for the third time, which means that the onboard ELRS receiver enters the linking mode.     2. After the ES915TX module or DIY 2.4G ELRS tuner module and the OpenTX remote control are correctly connected, copy the ELRS.LUA file to the SD card in the remote control, the directory is SD Card/Scripts/tools, and then run ELRS.LUA Perform Bind operation.     3. After the binding is successful, the LED on the receiver will become steady on, and the telemetry signal can be received at the same time.     4. The meaning of the receiver LED status: the LED is always on, indicating that the linking is successful or the connection and communication is normal, the LED double flashing indicates that the receiver is in the linking state, and the LED flashing slowly indicates that the transmitter signal cannot be received.          Specifications:                       Flight controller        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 Serial-based ExpressLRS 900MHz receiver(915MHz or 868MHz optional) Built-in 5V 1A BEC Flight controller firmware target: CRAZYBEEF4DX                    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.