FlyColor BLS-04 F4 55A 65A Stack 30.5x30.5mm – Dual Layer Flight Tower for FPV Drones

Overview

The FlyColor BLS-04 F4 Stack is a high-performance 2-in-1 tower system designed for powerful FPV racing and freestyle drones. Featuring a dual-board structure, this stack integrates a 32-bit STM32F405 flight controller and a BLHeli-S 4-in-1 ESC supporting up to 65A continuous current. Built to withstand aggressive flight demands, it supports 4-6S LiPo, multiple protocols including DShot, OneShot, MultiShot, and features quick-connect wiring, low internal resistance MOSFETs, and effective vibration damping.

Key Features

• High-Performance MCUs:

  • ESC MCU: EFM8BB21 running at 50MHz

  • Flight Controller MCU: STM32F405

• Robust Tower Design:

  • Simplified dual-layer structure

  • Quick-connect harness between FC and ESC

  • Silicone shock absorbers reduce vibration for stable flight control

• Supports Extreme Flight Conditions:

  • Low internal resistance MOSFETs allow high current throughput

  • Ideal for high-thrust, aggressive flight environments

• Wide Protocol Compatibility:

  • BLHeli-S ESC firmware supports Bluejay and A-H-30

  • Input PWM 1–2ms, Oneshot125, Oneshot42, Multishot

  • Full DShot support

• External Device Support:

  • Dual voltage BEC: 5V/1.5A and 12V/2A for peripherals like VTX, camera, GPS, buzzers, and LEDs

Specifications

Applications

The FlyColor BLS-04 F4 Stack is ideal for FPV racers and freestyle pilots looking for a high-power, compact, and durable stack that supports modern protocols and peripherals. Suitable for 5" to 7" quadcopters needing reliable performance under demanding flight conditions.

Details

F4 Flight Tower with EFM8BB21 MCU, 50MHz, high-performance MOSFETs, dual power outputs (5V/1.5A, 12V/2A), M3 mounts, supports BLUEJAY/BLHELI-S firmware, includes barometer.

Dual-layer tower structure reduces vibration. High-performance MCU with 50MHz frequency. Supports violent flight with low-resistance MOSFETs. Multiple protocols including BLHELI-S, ONESHOT, and DSHOT.

Tower structure with two layers. ESC and FC connected via quick-release cable. Silicone dampers reduce vibration impact on flight control. Compact design.

High-performance MCU: EFM8BB21 for ESC, STM32F405 for flight control, up to 50MHz frequency.

FlyColor BLS-04 Flight Tower wiring diagram details connections for FLASH, OSD, camera, telemetry, SBUS, barometer, flight controller, and motors with labeled pins.

BLS-04 F4 Tower: 4-6S LiPo, 45-65A current, 30.5x30.5mm M3 holes, 41x45x17.2mm size, 26g weight. Outputs 5V/1.5A, 12V/2A. Features BMP388 barometer and MPU-6500 SPI gyroscope.

FlyColor BLS-04 Flight Tower diagram includes ESC, X8 Motor, FC (Front & Back), DJI O3, VTX, ELRS/TBS, GPS, Camera, Buzzer, LED, and AIR terminal connections for drone assembly.