Happymodel ELRS F4 2G4 AIO 5in1 Flight controller built-in SPI 2.4GHz ELRS RXRM1641845738913 Happymodel ELRS F4 2G4 AIO 5in1 Flight controller built-in SPI 2.4GHz ELRS RX                                                                           Happymodel ELRS F4 2G4 AIO 5in1 Flight controller built-in SPI 2.4GHz ELRS RX                                                            The world’s first AIO 5in1 F4 flight controller with integrated SPI 2.4GHz ExpressLRS receiver has been launched. The flight controller integrates SPI controlled 2.4GHz ExpressLRS receiver, Dshot protocol 4-in-1 ESC, 5.8GHz 40ch video transmitter and Betaflight OSD. Ultra-small size and ultra-stable remote control range can improve the range of the original SPI receiver. And because the 2.4GHz ExpressLRS receiver is equipped with the SX1280 radio frequency chip with high sensitivity, high packet rate and low latency, this flight controller is the one that all Race/Freestyle pilots needed. It is suitable for use in Tiny whoop Race or Toothpick Freestyle, and can also be used in 1S ultra-lightweight Nano Long Range platform.                                                            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-inSPI ExpressLRS 2.4GHz receiver Built-in 5V 1A BEC Flight controller firmware target:CRAZYBEEF4SX1280                                                  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.