Product Overview

The Fusion Reflex comes with many adaptable features. In order to better understand the product, its various components are explained in the following sections.

Hardware

An overview of the physical properties of the Reflex can be seen in the table given below. Further details are also available under Hardware Overview.

CharacteristicsValue
Length134 mm
Width62.5 mm
Height15 mm
Mounting hole screw sizeM4
Weight130 g

Connectivity

Unless otherwise specified, all I/O uses 3.3 V output, and accepts both 3.3 V and 5 V input.

  • Two independent I²C buses
  • Two independent UART/serial ports
  • One GNSS UART port with an additional Pulse Per Second (PPS) pin
  • Two CAN ports
  • USB OTG
  • Four analog inputs (0-5 V), two per redundant power input
  • Two sets of eight I/O pins for ESCs/PWM/GPIO, supporting bidirectional DShot
  • Dedicated RC port which supports SBUS and an option to support DSM, S.Port, or F.Port
  • Built-in 2.4GHz and 5 GHz WiFi with an external antenna
  • 10/100 Ethernet port

Sensors

Triple redundant IMUs and barometer

  • Three TDK ICM-42688P accelerometer and gyroscope
  • BMP390 barometer

Power input

  • Two 5 V redundant power inputs

Processors and memory

  • 1.5 GHz 64-bit ARM Cortex A72 processor with four cores
  • 2 GiB RAM
  • 32 GiB flash storage
  • Separate 100 MHz ARM Cortex-M4 processor for I/O signals and ESC RPM control

Control

  • Non-linear control based on INDI for superior performance in extreme situations.
  • Flexible drone layout with the ability to configure any number of rotors in any position and orientation.
  • Fault detection and fault-tolerant control, allowing the drone to fly even with damaged ESCs/motors on selected frames.
  • Advanced state estimation based on Unscented Kalman Filtering.
  • Dual GNSS heading support.
  • Sensor redundancies.
  • Smoother stick controlled flights.
  • Advanced sensor filtering to remove noise and improve data accuracy and reliability.

Software

  • Modular and reliable software framework with tasks running in isolated processes.
  • Flexible sensor layer that can support any number and type of sensors, limited only by bus bandwidth.
  • Efficient and extensive custom data logging framework with CSV export.
  • Communication facilitated through MAVLink.
  • Overall system and sensor health monitoring.