Mateksys G474-HELI Flybarless RC Helicopter Flight Controller for 2-6S Lipo

The MATEK Mateksys G474-HELI is a high-performance flight controller designed specifically for RC helicopter flybarless applications. Featuring a powerful STM32G474 microcontroller, the G474-HELI packs a punch with its 170MHz Cortex-M4 processor and 512KB of flash memory.

At the heart of the controller is an IMU (Inertial Measurement Unit) powered by the ICM42688-P sensor, providing precise motion tracking and stabilization. The board also integrates a barometric pressure sensor, SPL06, for accurate altitude and vertical speed measurements.

For data recording, the G474-HELI is equipped with a 128MB flash blackbox, allowing pilots to review and analyze their flight data.

Connectivity-wise, the flight controller offers three UART ports, one I2C bus, and eight PWM channels. The PWM channels can be configured to control four servos, two motors, and provide RPM and LED outputs.

Two ADC (Analog-to-Digital Converter) channels are available for monitoring the battery voltage and current. The board supports an input voltage range of 5.4V to 30V, which covers 2 to 6 cell LiPo batteries.

For power distribution, the G474-HELI features two BEC (Battery Elimination Circuit) outputs. The main BEC provides 5V at 2A for the flight controller and peripherals, while the secondary BEC can deliver 5V or 7.2V at 5A continuous, 8A peak, for servo and other high-current applications.

The flight controller is designed with a compact 20x20mm mounting footprint and is just 13mm tall. It weighs only 15g (without pins), making it a great choice for lightweight and high-performance RC helicopter builds.

The G474-HELI comes pre-flashed with the Rotorflight firmware, a popular and feature-rich option for flybarless helicopter control. Users can easily update the firmware by downloading the latest version from the Rotorflight website and flashing it using the Rotorflight configurator software.

To ensure a seamless setup, the G474-HELI includes several accessories, such as a PicoBlade 1.25mm servo adapter, two 20cm JST-GH cables, and Dupont 2.54 pins (the board is shipped unsoldered).

Overall, the MATEK Mateksys G474-HELI is a capable and versatile flight controller that delivers excellent performance for RC helicopter flybarless applications. Its feature-rich design, compact form factor, and robust construction make it a popular choice among RC helicopter enthusiasts and professionals alike.

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