SpeedyBee F405 Mini BLS 35A 20×20 Stack

Name: SpeedyBee F405 Mini BLS 35A 20×20 Stack
Brand: SpeedyBee
SKU: SPEEDYBEE-F405MINI-BLS35A
Price: 6749 INR
Availability: OutOfStock

₹6,749

SKU SPEEDYBEE-F405MINI-BLS35A

Mounting Size: 20x20FC Processor: F405Gyro: ICM42688PESC Current: 35 A

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The SpeedyBee F405 Mini BLS 35A 20x20 Stack pairs an STM32F405 flight controller with a 35A BLHeli_S 4-in-1 ESC. Engineered with a compact 20x20mm mounting footprint, this stack is specifically built for 2-inch to 4-inch sub-250g quadcopters, lightweight 5-inch toothpick builds, and cinewhoop frames running on 3S to 6S LiPo power.

Key features

Wireless configuration: Built-in Bluetooth connectivity allows full flight controller tuning, motor direction adjustments, and firmware updates directly from your smartphone using the SpeedyBee mobile app (iOS and Android).
HD and analog compatibility: Includes a dedicated 6-pin plug-and-play connector for the DJI O3 Air Unit, RunCam Link, Walksnail Avatar, and Caddx Vista, alongside standard solder pads for analog video transmitters.
Dual BEC power outputs: Integrated voltage regulators deliver a steady 5V/2A for receivers, GPS, and LEDs, plus a dedicated 9V/2A rail to cleanly power high-definition VTX modules.
35A 4-in-1 ESC: Delivers 35A continuous current per channel with a 45A 10-second burst rating. Runs on BLHeli_S firmware and supports BlueJay out of the box to enable bi-directional DShot and RPM filtering.
Comprehensive hardware connectivity: Equipped with 6 full hardware UART sets, an I2C port for GPS/compass integration, a built-in barometer, and 8MB of onboard flash storage for Blackbox flight data logging.

Specifications

MCU: STM32F405RGT6
Gyro / IMU: ICM42688P
Input Voltage: 3-6S LiPo
ESC Continuous / Burst Current: 35A x 4 / 45A (10s)
ESC Firmware: BLHeli_S (BlueJay compatible)
BEC Outputs: 5V 2A, 9V 2A
Hardware UARTs: 6
Blackbox Storage: 8MB Onboard Flash
Mounting Size: 20x20mm (M2 / M3 compatible via grommets)
Supported Firmware: Betaflight, INAV
Total Stack Weight: 13.5g

This stack is ideal for builders seeking the advanced feature set of full-sized 30.5x30.5mm flight controllers—such as native Bluetooth app tuning and direct HD VTX wiring—condensed into a space-saving 20x20mm form factor.