Happymodel CrazyF405 Whoop AIO Flight Controller with 12A BLHELI_S 4-in-1 ESC and ELRS 2.4GHz RxA flight controller with a built in Serial ELRS receiver and 4 IN 1 Blheli_S 12A ESC specially developed for Digital HD FPV, which removes the analog OSD chip 7456, optimizes the PCB layout, and supports 1 2S Lipo LiHV lithium batteries, very Suitable for Digital HD Tinywhoop Cinewhoop Toothpick and other small FPV drones. The flight controller uses the F405 chip, supports Betaflight INAV firmware, has 3 sets of complete UARTs available, and