Quick Answer
The Cube Orange+ is the standard Cube autopilot for most professional drone builds. It offers triple-redundant IMUs, an H7 processor, and plenty of I/O for multi-rotor, fixed-wing, and rover applications. The Cube Red Pro adds a second Flight Management Unit (FMU) for hardware-level redundancy, making it the choice for BVLOS operations, enterprise fleets, and any application where a single-point processor failure is unacceptable.
Shared Features
Both controllers share the same Cube form factor: a 40-pin DF17 connector that plugs into CubePilot carrier boards. Both run ArduPilot and PX4. Both have triple-redundant IMUs, dual barometers, and dual power inputs. The difference is not in sensor quality or general capability. It comes down to processor architecture.
What Is Dual FMU and Why Does It Matter?
A standard Cube autopilot has one Flight Management Unit (FMU) running the flight control software. If that processor locks up or fails, the aircraft loses control. Dual FMU means two independent processors run side by side. The primary FMU handles normal flight, and a secondary FMU monitors and can take over in a failure event.
For most builds, this redundancy is overkill. If you are flying survey missions, mapping, or inspection within visual line of sight, a single FMU is sufficient. Dual FMU matters when the consequences of a control failure are serious: flying over people, BVLOS delivery routes, or regulated commercial operations that require redundancy as part of their safety case.
Specification Comparison
| Feature | Cube Orange+ | Cube Red Pro |
|---|---|---|
| Processor | STM32H7 (single FMU) | Dual FMU (primary + backup) |
| IMUs | 3x redundant (2 on IMU board, 1 on FMU) | 3x redundant |
| Barometers | 2x dual | 2x dual |
| Onboard Compass | 1x | 1x |
| Power Inputs | Dual (dedicated backup) | Dual (dedicated backup) |
| PWM Outputs | 14 (8 from I/O, 6 from FMU) | 14 (8 from I/O, 6 from FMU) |
| Serial Ports | 5 (2 with flow control) | 5 (2 with flow control) |
| CAN Bus | CAN FD | CAN FD |
| Form Factor | 40-pin DF17 Cube standard | 40-pin DF17 Cube standard |
| Firmware | ArduPilot / PX4 | ArduPilot / PX4 |
Who Should Buy the Cube Orange+?
The Cube Orange+ is the right choice for the majority of professional builds. Surveying drones, mapping aircraft, inspection multi-rotors, research platforms, and racing fixed-wings all run well on a single FMU. If you are upgrading from a standard Pixhawk 6 flight controller, the Orange+ gives you better sensor redundancy and a more robust mechanical form factor without a significant learning curve.
The Cube Orange+ Standard Set with ADS-B includes the module, carrier board with ADS-B receiver, and GPS. It is a straightforward way to get started.
Who Should Buy the Cube Red Pro?
The Cube Red Pro targets operations that demand hardware redundancy. BVLOS (Beyond Visual Line of Sight) flights, regulated commercial work, and enterprise fleets are the primary use cases. If your safety case or operational approval requires dual-processor capability, the Red Pro is the Cube to use.
For operators running a fleet of identical aircraft, standardising on the Red Pro also simplifies maintenance. The dual-FMU architecture means fewer mandatory component replacements if a processor fault occurs, reducing turnaround time between flights.
Carrier Board Compatibility
Both the Orange+ and Red Pro use the same carrier board ecosystem. The Cube Carrier Board with ADS-B works with either module. Choose the carrier board based on your I/O needs and sensor requirements, not the autopilot module. See our CubePilot guide for more on the full ecosystem.
What to Buy
- CubePilot Cube Orange+ Module — best for most professional drone builds
- CubePilot Cube Red Pro — dual-FMU for BVLOS and enterprise operations
- Cube Orange+ Standard Set with ADS-B — complete starter kit
- Autopilots & Flight Controllers — full range of flight controllers
FAQ
Q: Can I swap a Cube Orange+ for a Red Pro on the same carrier board?
A: Yes. Both modules use the same 40-pin DF17 connector. You can physically swap them and update your ArduPilot/PX4 configuration. No hardware changes to the carrier board are needed.
Q: Does the Red Pro fly differently from the Orange+?
A: Under normal operation, flight behaviour is identical. Both run the same firmware with the same parameters. The difference only appears in a failure scenario, where the Red Pro's backup FMU can maintain control.
Q: Is the dual FMU worth it for a hobby build?
A: Not for most hobbyists. If you are flying for fun, photography, or learning, the Orange+ is more than capable. The Red Pro's redundancy is for commercial and regulated operations where the cost of a failure is high.