Build-ready 30×30 control stack
The SpeedyBee F405 V4 BLS 55A stack pairs an STM32F405 flight controller with a 55A-per-channel BLHeli_S 4-in-1 ESC. It suits 3–6S FPV builds where the priority is a standard 30.5×30.5 mm mounting pattern, wired DJI digital-video support and a practical service layout.
Key specifications
- FC: STM32F405 processor, ICM42688P gyro, barometer and AT7456E analog OSD
- ESC: 55A continuous / 70A burst per channel; BLHeli_S J-H-40; DShot300/600
- Power: 3–6S LiPo input; 5V and 9V regulated outputs
- Logging and setup: microSD Blackbox slot, USB-C and Bluetooth app configuration
- Video integration: six-pin DJI connector plus solder pads
- Mounting: 30.5×30.5 mm, 4 mm holes
Fitment check before installation
Confirm your frame has 30×30 stack clearance, your selected motors remain within the 55A ESC rating, and that the battery lead, capacitor and digital-video wiring have adequate strain relief. ESC telemetry is not available on this BLS ESC; configure voltage and current monitoring according to the supplied setup documentation.
Availability note: This is a legacy product line. Contact 100drone before ordering if you require current-batch or replacement availability.