RadioMaster Nexus-XR Red Helicopter Flight Controller with Integrated ExpressLRS Receiver

Introduction

The RadioMaster Nexus-XR is a cutting-edge flight controller designed specifically for helicopter enthusiasts. It integrates a high-performance ExpressLRS receiver directly onto the flight controller board, simplifying builds and improving reliability. Ideal for both electric and nitro RC helicopters, the Nexus-XR offers advanced features and robust performance for a superior flying experience.

Key Advantages

• Integrated ExpressLRS Receiver: Features dual Semtech SX1281 2.4GHz transceivers for exceptional RF performance and extended range, removing the need for external receivers.
• Powerful Processing: Equipped with an STM32F722 MCU and ICM42688P 6-axis IMU for precise flight control and excellent vibration resistance.
• Enhanced Power System: An improved BEC provides stable power to electronics, and the external voltage input supports a wide range from 3.6V to 70V.
• Extended Flight Logging: 256MB of onboard flash memory allows for extensive flight data recording and tuning.
• Durable CNC Aluminum Case: The sleek, robust casing acts as a protective shield and an effective heatsink, keeping the system cool during intense flights.
• Optimized for Rotorflight 2.2: Designed for peak performance and seamless compatibility with the latest Rotorflight firmware.
• Versatile Connectivity: Multiple UART ports, support for various receiver protocols (CRSF, ELRS, S.BUS, etc.), and extra PWM pins for complex setups.
• Rotorflight Rescue Ready: Includes the standard Rotorflight Rescue function for enhanced safety during emergencies.

Technical Specifications

• Product: Nexus-XR Helicopter Flight Controller
• Firmware: Rotorflight 2.2
• MCU: STM32F722RET6
• Gyro (IMU): ICM42688P
• Flash Memory (Blackbox, IC): 256MB (W25N02KVZEIR)
• Barometer: SPL06-001
• UARTs: 5 (S.BUS[UART1], TELEM[UART2], PORT-A[UART4], PORT-B[UART6], PORT-C[UART3])
• Servo Outputs: S1, S2, S3, Tail Servos (up to 12V)
• RPM Sensor: 1 (FROM ESC FREQUENCY SENSOR)
• AUX: 1
• External Voltage Input (Tele): 3.6V-70V
• Receiver Support: CRSF, ELRS, GHOST, S.BUS, SUMD, IBUS, XBUS, EXBUS, PPM, MSP
• Power Input (DC): 5V-16V
• Serial Port Output Power A-B-C: 5V - 1.5A
• Telemetry: S.BUS, HoTT, S.Port, MSP, EDGETX, ELRS
• ESC Protocol: PWM, Oneshot, Multishot, Dshot
• Tail Servo Support: 760μs / 1520μs servo
• Tail Motor Support: Yes
• Internal Receiver: RP4TD-M ExpressLRS 2.4GHz Mini True Diversity Receiver
• Internal Receiver MCU: ESP32
• Internal Receiver Type: ISM
• RF Chip: SX1281 x 2
• Antenna: 2x 65mm 2.4GHz wire antenna
• Frequency Range: 2.4 GHz
• Max Refresh Rate: 500 Hz / 1000 Hz
• RF Telemetry Power: Max 2 x 10mW
• Wi-Fi Updates: Yes
• Target FW: RadioMaster RP4TD-M 2400 RX
• Bus Interface: CRSF
• Dimensions: 44.70 x 26.50 x 14.30 mm
• Weight: 24.1 g
• Case Color: Red

Applications

This flight controller is specifically designed for high-performance RC helicopters. Its robust features make it suitable for FPV helicopter builds, advanced aerobatics, nitro conversions, and demanding drone applications requiring precise control and reliable telemetry.

Compatibility

The Nexus-XR is compatible with Rotorflight 2.2 firmware and supports a wide range of receiver protocols including CRSF, ELRS, S.BUS, SUMD, IBUS, XBUS, EXBUS, PPM, and MSP. It features multiple UART ports and enhanced PWM outputs, including support for 760μs/1520μs tail servos and 12V servos. The external voltage input ranges from 3.6V to 70V, and standard 5V-16V DC power input is supported. Includes a USB-C extension cable for easy connection.

FAQ

What is the RadioMaster Nexus-XR helicopter flight controller?

The RadioMaster Nexus-XR is an advanced flight controller for RC helicopters, featuring an integrated ExpressLRS receiver, a powerful STM32F722 MCU, and an ICM42688P IMU for precise control. It's designed to simplify builds and enhance performance for both electric and nitro helicopters.

What are the main advantages of the Nexus-XR over standard flight controllers?

Key advantages include its integrated dual 2.4GHz ExpressLRS receiver, eliminating external components, a robust CNC aluminum case for cooling and protection, a wide voltage input range (3.6V-70V), and 256MB of onboard memory for extensive flight logging.

What firmware is recommended for the RadioMaster Nexus-XR?

The Nexus-XR is optimized for Rotorflight 2.2 firmware, ensuring peak performance and compatibility with its advanced features. Check the HTDRONE website for the latest firmware updates and compatibility information.

Where can I buy the RadioMaster Nexus-XR helicopter flight controller?

You can buy the RadioMaster Nexus-XR helicopter flight controller at HTDRONE, your specialized FPV and UAV drone parts store. We offer competitive pricing and fast delivery within Poland and worldwide via DHL.

What receiver protocols does the Nexus-XR support?

The Nexus-XR supports a wide array of receiver protocols including CRSF, ELRS, GHOST, S.BUS, SUMD, IBUS, XBUS, EXBUS, PPM, and MSP, offering great flexibility for various remote control systems.