Goosky S2 ULTRA F401 Mini Flight Control Module

Goosky S2 Ultra F401-Mini Flight Control Module is a compact Rotorflight-based control unit designed for the Goosky S2 Ultra and other 200-size motor-driven tail helicopters. Built around the powerful STM32F405 processor and paired with a high-precision ICM-42688-P IMU, it delivers fast processing, accurate sensor performance, and the tuning flexibility advanced pilots want in a modern micro heli setup.

According to the official Rotorflight documentation, the F401-mini platform is also used as a plug-and-play replacement for the stock S2 Max flight controller and supports the GOOSKY_F4MINI firmware target. Rotorflight also provides setup resources for firmware updates, configuration files, and ESC setup for pilots who want to explore tuning in more detail.

With onboard Blackbox memory, multiple receiver connection options, ESC telemetry support, and USB-C configuration, this module is a strong replacement or upgrade choice for pilots who want dependable performance in a very compact package.

Key Features

• Powerful F4 Processor: Uses an STM32F405 MCU for fast and reliable flight control performance.
• High-Precision IMU: Equipped with an ICM-42688-P gyro/accelerometer for accurate sensor input and stable control response.
• Onboard Blackbox: Includes 128MB of built-in Blackbox memory for logging and tuning analysis.
• Flexible Receiver Support: Supports ELRS, DSMX, and SBUS with dedicated ports for easy installation.
• ESC Telemetry Ready: UART5 supports ESC telemetry for improved system monitoring and Rotorflight integration.
• Compact & Lightweight: Small 24 × 33 × 9 mm footprint and only 12g, ideal for compact helicopter builds.
• USB-C Configuration: Easy setup and tuning access through a modern USB-C connection.

Specifications

• MCU: STM32F405
• IMU: ICM-42688-P
• Blackbox Memory: 128MB W25N01G
• UARTs: UART1 (ELRS/DSMX), UART2 (SBUS), UART5 (ESC Telemetry)
• Servo Ports: 3 × micro JST 1.25mm (Molex PicoBlade compatible)
• Receiver Ports: Dedicated 3-pin SBUS port, 4-pin ELRS port, DSMX port (3-pin JST-ZH)
• ESC Connector: 5-pin JST-PH for 7.4V, telemetry, main motor, and tail motor
• USB Port: USB-C
• Dimensions: 24 × 33 × 9 mm
• Weight: 12 g

Compatibility

• Designed for: Goosky S2 Ultra (or S2 / S2 Max Rotorflight Conversion)
• Also suitable for: 200-size motor-driven tail helicopters

Included

• 1 × F401-Mini Flight Control Module
• 1 × Connecting cable set

Learn More

For official Rotorflight information, setup notes (configure for the S2 Max), and firmware details, customers can explore more here:
Official Rotorflight Goosky F4-mini Page