Blitz Whoop F411 AIO is a flight controller with ESCs in one. The board finds use primarily in small and lightweight toothpick drones. The Blitz Whoop 20A has a connector for connecting a DJI FPV transmission, making installation easier if using a digital system. However, thanks to the integrated OSD, it can also be fully used on analogue drones. The flight controller has 8MB memory for blackbox.
Wiring diagram here.