F7 V3 Flight Controller By SpeedyBee - Drone-fpv-racer.com
Speedybee Stack F7 V2 Clearance, SAVE 55%.
Review: Speedybee F7 V2 FC Stack - You Don't Need a Computer! - Oscar Liang
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