RadioMaster Nexus-XR Helicopter Flight Controller with Receiver
by RadioMaster

RadioMaster Nexus-XR Helicopter Flight Controller – Integrated 2.4GHz True Diversity Control System

Revolutionize your rotary-wing aircraft setups with the RadioMaster Nexus-XR Helicopter Flight Controller. This all-in-one flight control system changes the landscape of flybarless (FBL) unit installations by combining an advanced processing core with a built-in True Diversity receiver. Driven by dual advanced 2.4GHz transceivers and a high-speed microprocessor, the internal receiver delivers peerless RF performance, extreme range, and bulletproof signal telemetry. By removing the need for external receivers and complex interconnect wiring networks, the integrated single-PCB architecture drastically reduces overall weight, shortens the signal path, and fundamentally lowers vulnerability to Electromagnetic Interference (EMI).

At the center of the Nexus-XR is a high-performance 32-bit microcontroller running alongside a highly precise 6-axis MEMS motion-tracking device. Combining a 3-axis gyroscope and a 3-axis accelerometer, this IMU features phenomenal vibration resistance and high-frequency noise rejection. This structural engineering makes it flawlessly compatible with high-vibration environments, working seamlessly inside both high-RPM electric and nitro-powered model helicopters ranging from compact 250-class units up to giant 700-class platforms. Fully optimized for advanced helicopter flight control firmware, it brings unparalleled stabilization dynamics, advanced mathematical filtering, and critical safety features like emergency rescue recovery modes directly to your control setup.

The device boasts exceptional electrical engineering designed to satisfy professional RC hobbyists, commercial sUAS drone manufacturers, academic robotics programs, and tactical contractor requirements. It incorporates fully isolated internal power supplies with dedicated lines for the gyro, MCU, and interface paths to completely neutralize internal high-frequency bus noise. An upgraded internal BEC ensures continuous, reliable current to your flight electronics, supporting heavy-load configurations and high-voltage servos up to 12V. Data logging capabilities are comprehensively covered by an expanded 256MB onboard black box flash memory chip, allowing for exceptionally long high-rate logging sessions necessary for fine-tuning PID loops and filtering profiles. Wrapped inside a premium, color-anodized, CNC-machined aluminum case that protects sensitive components while doubling as an efficient thermal heat sink, this flybarless control system ensures top-tier operational reliability in the most demanding flight envelopes.

Technical Specifications

• Flight Controller Processor (MCU): High-Performance 32-Bit Processing Core

• Inertial Measurement Unit (Gyro/IMU): 6-Axis Motion Tracker (Vibration-Resistant)

• Barometer Sensor: Integrated Altitude Monitor Sensor

• Primary System Firmware: Pre-configured for advanced helicopter flight control firmware

• Onboard Black Box Memory: 256MB Flash Memory for high-rate data logging

• Hardware UART Ports: 5 Total (supporting standard serial, receiver, and telemetry protocols)

• Servo Interface Support: 4 Dedicated Channels supporting up to 12V High-Voltage Servos

• Tail Rotor System Configurations: Supports Narrow/Wide-Band Tail Servos, Tail ESCs, and Direct Tail Motors

• Rotational Speed Input Sensor: 1 Dedicated RPM Frequency Input from ESC Sensor Line

• Telemetry Compatibility Output: Compatible with major radio control and telemetry protocols

• External Sensor Interface Power Out: Filtered 5V power output from auxiliary serial ports

• External Telemetry Voltage Sensing Input: 3.6V to 70V DC Extra-Wide Range

• System DC Power Supply Input Range: 5V to 16V DC Input

• Motor Protocol Signaling Profile: Multi-protocol support including standard digital and analog signaling

• Integrated Receiver Module: Integrated 2.4GHz True Diversity Receiver

• Receiver Microcontroller & RF Chips: High-speed MCU with Dual Advanced RF Transceivers

• Antenna Setup Configuration: Dual High-Gain Wire Antennas

• Chassis Shell Construction Material: CNC-Machined Aluminum Case

• Physical Module Dimensions: 44.70 x 26.50 x 14.30 mm

• Total Module Weight: 24.1 grams

What's Included

• 1 x RadioMaster Nexus-XR Helicopter Flight Controller Unit

• 3 x 4-Wire Premium Silicone Pigtail Interconnect Cables

• 1 x Servo Plug Adapter Cable (3-Pin Connector)

• 1 x Servo Plug Adapter Cable (2-Pin Connector)

• 1 x Ultra-Lightweight and Flexible External USB-C Interface Extender

• 1 x Type-C Heavy-Duty Shielded Extension Cable

• 3 x Double-Sided High-Damping Structural Mounting Tape Pads

• 2 x Industrial Heat Shrink Tubing Sleeves