Amazon.com: SpeedyBee F7 Mini Flight Controller Stack 3-6S 20x20mm Built-in Bluetooth Drone Stack with 35A BLHeli_S 4 in 1 ESC Support Wireless Tuning for 2-4 Inch FPV Drone : Toys & Games
F7 MINI V1.0 Flight Controller with 35A 2-5S BLHELI_S 4 in 1 ESC Flytower – xyzhobby
Mini Magnum III Parts - F4 Flight Controller | Emax USA