Hobbywing Platinum 25a 6S V4 Speed Control

The Hobbywing Platinum 25A V4 is a high-performance electronic speed controller (ESC) designed for 250–300 class helicopters and small fixed-wing aircraft. As part of the prestigious V4 series, it features a 72MHz 32-bit processor and advanced governing algorithms that provide exceptional motor speed control. Despite its small footprint, it is 6S LiPo compatible and includes a high-voltage BEC, making it a favorite for pilots who demand precision and reliability in micro-sized builds.

Key Features:

• Excellent Motor Governing: A high-performance 32-bit processor running at 72MHz provides a precise governor for helicopters, ensuring stable head speed even under aggressive collective changes.
• DEO Technology: Driving Efficiency Optimization (Active Freewheeling) improves throttle linearity, increases driving efficiency, and reduces the operating temperature of the ESC.
• High-Voltage Built-in BEC: The integrated switch-mode BEC is adjustable between 6.0V and 7.4V, delivering 3A continuous (7A peak) current to power high-torque micro servos.
• Multiple Flight Modes: Includes four distinct modes: Fixed-wing, Helicopter (External Governor), Helicopter (Elf Governor), and Helicopter (Store Governor).
• Reverse Brake: Allows fixed-wing pilots to shorten landing rolls by reversing the motor direction to create reverse thrust (simulating real aircraft behavior).
• Data Logging: Records minimum voltage and maximum temperature during flight, which can be checked via the programming port after landing.

Technical Specifications:

Integration Tip:

The Platinum 25A V4 features a dedicated Yellow RPM Signal wire. This allows you to feed real-time RPM data directly into flybarless (FBL) units or telemetry systems without needing an external brushless RPM sensor. If you are using a high-end FBL with its own governor (like a Mikado VBar or Brain2), set the ESC to "Helicopter (External Governor)" mode to allow the FBL to take full control of the motor timing.