RadioMaster NEXUS-X Helicopter Flight Controller for Rotorflight 2.2 – STM32F722, 256MB Blackbox, CNC Case

Overview

The RadioMaster NEXUS-X is a helicopter flight controller specifically designed for RF 2.2, focusing on compatibility, stabilization performance, and clean installation. It uses an STM32F722 MCU with an ICM42688P 6-axis MEMS motion tracker and includes an upgraded 256MB onboard Black Box for extended data logging and tuning.

The controller provides multi-function UART connectivity for a wide range of receiver protocols, and supports PlugnPlay solder-free RP3-H ExpressLRS receivers (receiver sold separately). A CNC-machined aluminum case helps protect the electronics while acting as a heat sink, and USB-C access is supported via an included extender for tight builds.

Key Features

• Designed for RF 2.2 compatibility
• MCU: STM32F722
• Gyro/IMU: ICM42688P 6-axis MEMS
• Built-in Black Box with 256MB onboard flash memory
• CNC aluminum case for protection and cooling
• Multi-function UART ports for receiver and peripheral integration
• Receiver support: CRSF, ELRS, GHOST, S.BUS, SUMD, IBUS, XBUS, EXBUS, PPM, MSP
• PlugnPlay connector support for RP3-H ExpressLRS receivers (sold separately)
• Servo outputs: S1, S2, S3, TAIL (up to 12V)
• Supports tail servo and tail motor
• USB-C interface and FC-Boot access
• RF Rescue feature
• Optional case colors: Grey / Gold / Red / Blue / Purple

Specifications

Whats Included

• 1 x NEXUS-X Control System
• 3 x JST-GH 4-wire pigtail cables
• 1 x JST-GH to servo plug (Dupont 3-pin connector)
• 1 x Ultra light-weight and flexible USB-C extender
• 1 x Type-C extension cable
• 1 x JST-ZH1.5 DSM telemetry cable (telemetry only; does not support DSM receivers)
• 1 x Voltage telemetry wire
• 3 x 3M double-sided mounting tape
• 2 x Heat shrink tubing
• 1 x Inventory card

Applications

• Helicopter builds using RF 2.2 / Rotorflight 2.2
• Setups requiring onboard Black Box logging for tuning
• Receiver integrations using CRSF, ELRS, S.BUS, and other supported protocols

For installation and wiring questions, contact [email protected] or visit https://rcdrone.top/.

Details

Purpose-built for Rotorflight 2.2, NEXUS-X combines a compact layout with clean USB-C access for easy setup and tuning.

An STM32F722 processor paired with the ICM42688P 6-axis IMU delivers fast stabilization response and consistent flight feel.

Expanded 256MB onboard Black Box memory captures longer logs for troubleshooting, tuning, and performance reviews.

The CNC-machined aluminum housing helps protect the electronics while acting as a heat sink in tight helicopter frames.

Key specs at a glance help confirm receiver support, UART mapping, power input range, and telemetry options before install.

A 44.7 26.5 12.3 mm footprint keeps the controller easy to fit while retaining full connectivity.

Everything needed for a neat build is included, from JST-GH harnesses and a USB-C extender to mounting tape and heat-shrink.