HOLYBRO CAN Hub

HOLYBRO CAN Hub – CAN Port Expansion with Integrated Power Supply

The HOLYBRO CAN Hub is an active CAN expansion module for flight controllers and CAN-compatible peripheral devices. The module expands a single existing CAN connection to up to four CAN ports and additionally provides an independent power supply for connected devices.

An integrated step-down voltage regulator allows the CAN Hub to be powered directly from a 2S to 12S battery. The input voltage is regulated to a stable 5.2 V and supplied through the four CAN outputs to connected sensors and other CAN peripherals.

The CAN Hub is particularly suitable for UAVs, UGVs, VTOL platforms, and other unmanned systems where multiple CAN or DroneCAN components need to be connected to a flight controller.

One CAN Port – Up to Four Connections

The HOLYBRO CAN Hub expands one CAN connection of the flight controller to a total of four CAN outputs. This allows multiple compatible devices to be connected centrally to the CAN bus system.

This is particularly useful in more complex system architectures where GNSS modules, magnetometers, airspeed sensors, LiDAR sensors, power modules, or other CAN-compatible components are used simultaneously.

• 1 × CAN input
• 4 × CAN outputs
• Central CAN bus distribution
• Suitable for multiple CAN peripheral devices

Independent Power Supply

Many flight controllers already provide a 5 V power supply through their CAN connections. However, the available voltage and current may be limited by additional connected components and the maximum load capacity of the flight controller's power supply.

The HOLYBRO CAN Hub therefore features a separate power supply. The module can be powered directly from a 2S to 12S supply through the XT30 input. The integrated voltage regulator then provides a stable output voltage of 5.2 V ±0.15 V for the connected CAN devices.

Up to 1 A per CAN Port

Each of the four CAN outputs can supply up to 1 A at 5.2 V. The maximum combined current across all four CAN outputs is 3 A.

• Output Voltage: 5.2 V ±0.15 V
• Maximum Current per CAN Port: 1 A
• Maximum Total Current: 3 A

Wide Input Voltage Range

With an input voltage range of 2S to 12S, the CAN Hub can be integrated directly into a wide variety of power architectures. Power is supplied through a compact XT30 connector.

• Input Voltage: 2S–12S
• Power Input: XT30
• Integrated step-down voltage regulator

For CAN and DroneCAN Peripherals

The CAN Hub is suitable for expanding flight controller systems that use multiple CAN-based components. These may include GNSS and RTK systems, external magnetometers, airspeed sensors, optical sensors, LiDAR modules, and other DroneCAN-compatible devices.

Thanks to the separate power supply, connected devices do not have to rely exclusively on the flight controller's 5 V power supply. This can simplify the power architecture, particularly in systems with multiple CAN devices.

Features

• Active CAN Hub for flight controllers and peripheral devices
• Expands one CAN port to up to four CAN ports
• Integrated step-down voltage regulator
• Separate power supply via XT30
• Supports 2S to 12S input voltage
• Regulated output voltage of 5.2 V ±0.15 V
• Up to 1 A output current per CAN port
• Up to 3 A total current across all four CAN ports
• Suitable for CAN and DroneCAN peripheral devices
• Ideal for systems with multiple CAN sensors
• Suitable for UAVs, VTOLs, UGVs, and robotics platforms

Technical Specifications

CAN Expansion for Complex Unmanned Systems

The HOLYBRO CAN Hub provides a compact solution for expanding the number of available CAN connections on a flight controller while simultaneously providing a separate, regulated power supply for connected peripheral devices.

This makes the CAN Hub particularly suitable for professionally configured unmanned systems with multiple CAN or DroneCAN sensors and helps create a clean, modular, and scalable CAN bus architecture.